Rockwell Automation 2706-F11J, 2706-F11JC, 2706-F21J, 2706-F21JC User Manual

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Allen-Bradley

Dataliner DL50 Series Message

Installation

Display

(Cat. No. 2706-F11J,

-F11JC, -F21J, -F21JC)

Manual

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment. “Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls” (Publication SGI-1.1) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will the Allen-Bradley Company be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, the Allen-Bradley Company cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Allen-Bradley Company with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual in whole or in part, without written permission of the Allen-Bradley Company, is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property

damage, or economic loss.

Attentions help you:

• identify a hazard

• avoid the hazard

• recognize the consequences

Note: Identifies information that is especially important for successful

application and understanding of the product.

PLC and PLC-5 are registered trademarks of Allen-Bradley Company, Inc. SLC and Dataliner are trademarks of Allen-Bradley Company, Inc. IBM is a registered trademark of International Business Machines, Incorporated.

Dataliner DL50 Series User Manual

Using This Manual

Introduction to the DL50

Configuring the DL50

Chapter 1

Chapter Objectives 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview of this Manual 1–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Intended Audience 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Conventions Used 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Attention Symbol 1–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Related Publications 1–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2

Chapter Objectives 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Overview 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Features 2–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Character Number and Size 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Major Components 2–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Descriptions 2–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Modes 2–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Communications Overview 2–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Communication Examples 2–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3

Chapter Objectives 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DIP Switch Locations 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DIP Switch Functions 3–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Setting Switches 3–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Slave Address 3–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Protocol 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Character Height 3–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Baud Rate 3–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Operating Mode 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Enabling/Disabling Checksum 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Display Type 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Selecting Default Display Color 3–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DL50 Reset 3–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installing the DL50

Chapter 4

Chapter Objectives 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting Dimensions 4–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting Methods 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Surface Mounting 4–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Wall Mounting- Using Angle Brackets 4–3. . . . . . . . . . . . . . . . . . . . . .

Wall Mounting- Using Adjustable Brackets (Catalog No. 2706-NJ3) 4–4

Chain Suspension 4–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Back to Back Mounting 4–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

Dataliner DL50 Series User Manual

Installing the DL50 (continued)

Wiring Recommendations 4–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

European Union Directive Compliance 4–9. . . . . . . . . . . . . . . . . . . . . . . . .

Grounding Recommendations 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting Power 4–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Annunciation Relay Connections 4–11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RS-232 Connections 4–12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

RS-485 Connections 4–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connection to DL20/DL40 “Master” Displays 4–16. . . . . . . . . . . . . . . . . . .

Connection as Slave to DL20 “Master” RS-232 Port 4–18. . . . . . . . . . . . . .

Connection to Personal Computers 4–19. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Black Box LD485A-MP Configuration 4–20. . . . . . . . . . . . . . . . . . . . . .

Connection to Allen-Bradley Programmable Controllers 4–21. . . . . . . . . . .

BASIC Module

Catalog No. 1771-DB

Catalog No. 1746-BAS 4–22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Peripheral Communications Module

Catalog No. 1771-GA 4–23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ASCII I/O Module

Catalog No. 1771-DA 4–24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Flexible Interface Module

Catalog No. 2760-RB 4–25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Communications

Chapter 5

Chapter Objectives 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Protocols 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Host Device Compatibility 5–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Simplex Protocol 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 1: Optional Control Byte 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 2: ASCII Text 5–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 3: Optional Display Mode 5–3. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 4: Slave Address 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 5: Line Number 5–5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 6: Carriage Return 5–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clearing Lines of Text 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Performance 5–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Serial Communications (continued)

Table of Contents

Dataliner DL50 Series User Manual

Duplex Protocol 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 1: Control Byte 5–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 2: ASCII Text or Special Control Characters 5–9. . . . . . . . . . . . .

Field 3: Slave Address 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 4: Line Number 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 5: Carriage Return 5–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 6: Message Attributes 5–10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Field 7: Checksum 5–13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Response from the DL50 5–14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Slave Mode Operation / Examples

Chapter 6

Chapter Objectives 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Slave Mode Operation 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example Messages 6–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example 1 (Simplex Protocol) 6–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example 2 (Duplex Protocol) 6–3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example 3 (Relay On) 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example 4 (Relay Off) 6–4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Example 5 (Send 2-Line Message) 6–5. . . . . . . . . . . . . . . . . . . . . . . . .

Programming Examples 6–6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using the DL50 to Display Messages From a DL20 6–6. . . . . . . . . . . .

Using the DL50 to Display Messages From a DL40 6–8. . . . . . . . . . . .

Updating Embedded Variables from a DL20 or DL40 6–10. . . . . . . . . .

DL50 BASIC Alarm Programming Example 6–12. . . . . . . . . . . . . . . . .

Flexible Interface Module Example 6–15. . . . . . . . . . . . . . . . . . . . . . . . .

PLC-5 Channel 0 Simplex Example 6–18. . . . . . . . . . . . . . . . . . . . . . . .

PLC-5 Channel 0 Duplex Example 6–22. . . . . . . . . . . . . . . . . . . . . . . . .

1746-BAS Duplex Example 6–26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DL50 Response Variables 6–28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bootstrap Mode

Chapter 7

Chapter Objectives 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bootstrap Mode 7–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

How to Tell if Firmware Is Corrupted 7–1. . . . . . . . . . . . . . . . . . . . . . . . . .

Updating Firmware 7–2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents

Dataliner DL50 Series User Manual

Troubleshooting and Maintenance

Specifications

Display Descriptions

ASCII Character Set

Dimensions

Serial Address Settings

Internal Wiring Diagrams

Chapter 8

Chapter Objectives 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting Chart 8–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Using LED Indicators and Diagnostic Mode 8–3. . . . . . . . . . . . . . . . . . . .

Fuse Replacement 8–7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacement Parts List 8–8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maintenance 8–9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 9

Appendix A

Appendix B

Appendix C

Appendix D

Appendix E

Checksum Calculations

Character Attribute Worksheet

European Union Directive Compliance

Glossary

Index

Appendix F

Appendix G

Appendix H

Chapter

Chapter Objectives

Overview of this Manual

A–B

Using This Manual

Read this chapter to familiarize yourself with the rest of the manual. You will learn about:

• Contents of this manual

• Intended audience

• Conventions used

• Warnings and cautions

• Related publications

                         

Table 1.A Chapter Descriptions

Chapter Title Purpose

1 Using this Manual Provides an overview of the manual. 2 Introduction to the DL50

3 Configuring the DL50

4 Installing the DL50

5 Serial Communications

7 Bootstrap Mode

9 Specifications

Slave Mode

Operation/Examples

Troubleshooting and

Maintenance

Appendices, Glossary, Index

Describes the main features and operating modes of the DL50.

Provides instructions for configuring the DL50 using the configuration DIP switches.

Provides step-by-step instructions on how to install the DL50.

Provides instructions on how to communicate with the DL50 through a host device.

Describes the operation of the DL50 while in the slave mode. Provides example messages (Simplex and Duplex protocols) for a variety of devices.

Describes how to update the DL50 firmware using the bootstrap mode.

Flow chart for troubleshooting a DL50. Includes general maintenance procedures.

Provides electrical, mechanical, and environmental specifications.

1–1

Chapter 1

Using This Manual

Intended Audience

Conventions Used

Only qualified service personnel may configure and install Dataliner DL50 Message Displays. No operator access to internal configuration switches or connectors is required.

The following conventions are used:

• The Catalog No. 2706ĆF11J, ĆF11JC, ĆF21J, and ĆF21JC DL50 Series

Marquee Message Displays are referred to as the DL50.

• When an ASCII character (printable or nonĆprintable) is specified, the

character is always followed by the decimal equivalent in parentheses. Refer to Appendix B for an ASCII conversion chart.

For example: When the DL50 receives a   , it clears

the buffer.

• DL50 displays are shown in a box. For example:

Motor ON

Attention Symbol

CE Directives

An Attention symbol in this manual draws your attention to information that is especially important.

ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property

damage, or economic loss.

If the DL50 is installed within the European Union, Appendix H gives the legal requirements.

1–2

Chapter 1

Using This Manual

Related Publications

Table 1.B lists some publications that you may require for additional reference.

Table 1.B Related Publications

Publication / Catalog

Number

2706-800 2706-814

2706-807

2706-808 1771-6.5.13 ASCII I/O Module (Catalog No. 1771-DA) User’s Manual 1771-6.5.34 BASIC Module (Catalog No. 1771-DB) User’s Manual

1746-ND005

2760-ND001

2760-ND003

2760-ND002

1775-6.5.4

1747-6.2

1785–7.1

Peripheral Communications Module (Catalog No. 1775-GA)

PLC-5 Programmable Controller (Catalog No. 1785–LT2)

Dataliner DL10 Series User’s Manual Dataliner DL20 Series User’s Manual

Dataliner DL40 Series Message Display

Dataliner DL40 Series Offline Programming Software

SLC 500TM BASIC Module (Catalog No. 1746-BAS)

Design and Integration Manual

Flexible Interface Module (Catalog No. 2760-RB)

DF1/ASCII Protocol Cartridge

(Catalog No.2760-SFC1)

DH-485 Protocol Cartridge (Catalog No. 2760-SFC2)

SLC 5/03 (Catalog No. 1747–L532)

SLC 5/04 (Catalog No. 1747–L542)

Title

User’s Manual

(for 2760-RB module)

User’s Manual

(for 2760-RB module)

User’s Manual

Quick Reference

1–3

Chapter

Chapter Objectives

Overview

A–B

Introduction to the DL50

This chapter describes the basic features, functions, and operating modes of the DL50.

The DL50 displays high visibility messages. Messages can be viewed from up to 240 feet (73.2 meters) away. This high visibility allows messages (fault, status, etc.) to be seen and responded to quickly.

Messages on the 2706-F11J and -F21J units are displayed in red. Messages on 2706-F11JC and -F21JC tricolor units may be displayed in red, green or amber, with individual character control.

The DL50 can receive message data from several sources. Messages are sent to the DL50 in a simple ASCII format. A DL20 or DL40 display can act as a controller, or messages can originate from a 1771-T60 Industrial Terminal running Allen-Bradley Distributed Diagnostics and Machine Control (DDMC) software. A DL50 can also receive message data from other intelligent devices such as a computer or BASIC Modules (Catalog No. 1771-DB / Catalog No. 1746-BAS).

Features

Note: Refer to

In addition, the DL50 has:

• RS-485 port for multidrop communications.

• RS-232 port for point-to-point communications.

• Relay output for turning on a lamp, audible alarm, etc.

• Anti-glare display window.

• Variety of display modes such as wiping, smooth scrolling, etc.

• Easy DIP switch configuration.

• Multiple mounting options including: Flush Mount, Back-to-Back

Mounting, and Chain Suspension. Optional mounting brackets (Catalog No. 2706-NJ3) are also available.

• Enclosure rated for NEMA Type 12 & 13 (UL-listed) and designed but

not UL listed for Type 4 (recommended for indoor use only).

• Universal power supply accepts 100–240 VAC and 50-60 Hz.

• Firmware (in flash EPROM) can be updated using a personal computer

and Firmware Update Disk (2706-NR4).

• Fault isolation LEDs show DL50 status and aid in troubleshooting.

• Diagnostic modes help isolate faults down to a serviceable component.

• Reduced Brightness Mode prolongs the life of the display’s electronics by

reducing heat generated, thus preventing the DL50 from exceeding the internal operating temperature limit.

        

2–1

Chapter 2

Introduction to the DL50

Character Number and Size

Major Components

The size and number of characters depends on the size of the DL50 display. Select the size of the characters based upon visibility requirements and message length

Table 2.A DL50 Display:Color; Number and Size of Characters

Catalog No.

2706-F11J Red

2706-F11JC

2706-F21J Red

2706-F21JC

Display

Color

Red, Green, Amber

Refer to Figure 2.1 and Figure 2.2 for the location of the major features/components. Following the illustrations are descriptions of each.

Figure 2.1 Major Features



Number of Characters

4.8 inch (122 mm) 2.1 inch (53 mm)

1 line of 10 2 lines of 20

1 line of 20 2 lines of 40

2–2

A-B

Allen-Bradley

Catalog No. 2706-F1 1J, -F11JC shown, Catalog No. 2706-F21J and F21JC are similar

Dataliner

OVERTEMP

STATUS

➀ Over Temperature

Indicator

➁ Status Indicators

Figure 2.2 Major Components

Chapter 2

Introduction to the DL50

Conduit Openings ➈

RESET RESET

Catalog No. 2706-F11J, -F11JC

Installation /

Diagnostic

Information Label

➈ Conduit Openings

Processor Board

➃ Power Connections

➂ Relay Output Connections

➇ RS-485 Port Connections

➆ RS-232 Port Connections

➄ Reset Button

➈

Conduit

Openings

➅ Configuration DIP Switches

Catalog No. 2706-F21J, -F21JC

Installation /

Diagnostic

Information Label

Processor Board

➈

Conduit

Openings

2–3

Chapter 2

Introduction to the DL50

Descriptions

➀ OVERTEMP Indicator

The LED on the upper right hand corner of the display indicates if the DL50 is in the Reduced Brightness Mode. This LED is normally off. If the temperature inside the DL50 reaches its internal operating limit, the DL50 will enter the Reduced Brightness Mode, and this LED will begin flashing. If the LED is on steady, the DL50 is in an automatic shutdown mode. The ambient temperature must be reduced to continue operation.

➁ STATUS Indicators

The two LEDs at the lower right hand corner of the display indicate the status of the display. When operating, the LEDs are on continuously. If a hardware fault is detected, the LEDs will flash.

➂ Relay Output Connections

These connections provide both normally open and normally closed contacts. The relay contacts are energized when a message is received which has a line number of 48. The relay contacts are de-energized when a message is received with a line number of 49. The relay contact terminals are labeled:

Terminal Number* Label Definition

1 NO Normally Open 2 NC Normally Closed 3 COM Common

* Terminal #1 is top terminal.

2–4

ATTENTION:

               

➃ Power Connections

Connect the DL50 power source to these terminals:

Terminal Number* Label Definition

1 L1 Line 1 (Hot) 2 L2N Line 2 (Neutral) 3 E. GND Earth Ground

* Terminal #1 is top terminal.

➄ Reset Button

This momentary contact switch re-initializes the DL50. After DIP switch configurations have been changed, the DL50 must be reset before the new configuration takes effect



Chapter 2

Introduction to the DL50

➅ Configuration DIP Switches

Use these DIP switches to select:

• Slave Address

• Protocol (Simplex or Duplex)

• Duplex Checksum (On or Off)

• Character Height

• Default Color (TriĆcolor displays)

• Baud Rate

• Mode Select

• Hardware Type

Chapter 3 provides a complete description of these switches.

➆ RS-232 Port Connections

The RS-232 communications port allows point-to-point communications between the DL50 and a host at distances of up to 50 feet (15.2 meters). The following terminal connections are provided

Terminal Number* Label Definition

1 T Transmit Line 2 R Receive Line 3 G Signal Ground

* Terminal #1 is top terminal.

➇ RS-485 Port Connections

The RS-485 communications port allows multi-drop communications. The cable distance between the last DL50 and host device (master) may be up to 4,000 feet (1219 meters). The following terminal connections are provided:

Label Function Definition

1 E. GND Earth Ground 2 Shield Shield 3 COM Common 4 + RS-485 + (B) 5 - RS-485 - (A) 6 TERM Termination

➈ Conduit Openings

External power and communications lines enter the enclosure through these openings.

2–5

Chapter 2

Introduction to the DL50

Operating Modes

The DL50 operates in one of three modes:

• Slave Mode. (Chapter 6)

Slave mode is the normal operating mode of the DL50. In this mode the DL50 will accept packets of data from either the RS-232 or RS-485 port. The DL50 supports both simplex and duplex communications.

• Diagnostic Mode. (Chapter 8)

Use this mode if the DL50 is not functioning properly. The diagnostic mode helps isolate faults down to a serviceable component.

• Bootstrap Mode. (Chapter 7)

Use the bootstrap mode if the firmware needs to be updated to incorporate new features. The DL50 may be reprogrammed using either the RS-232 or RS-485 communications ports. You may program multiple DL50s simultaneously on an RS-485 network.

Reduced Brightness Mode

In addition to the three operating modes, the DL50 may enter a Reduced Brightness Mode if the temperature inside the enclosure exceeds acceptable limits (+167F / +75C). In this mode, the DL50 turns on the OVERTEMP Indicator and reduces the brightness of the display LEDs. This reduces current consumption which reduces the amount of heat generated. If the temperature remains too high in the reduced brightness mode, the DL50 will shut down completely. In the shutdown mode, the DL50 clears the display leaving only the OVERTEMP LED on.

If the DL50 is operated in its specified ambient temperature range and

Note:

operating conditions, the DL50 should be able to operate at full brightness.

2–6

Chapter 2

mmu

Introduction to the DL50

nications Overview

Host Programmable Controller

or Computer

Host Programmable Controller

or Computer

1771 Remote I/O,

Parallel I/O

Parallel I/O Interface

The DL50 has both an RS-232 and an RS-485 communications port. Figure 2.3 illustrates some of the most common point-to-point and network applications.

Figure 2.3 Communications Overview

DL50 DISPLA

DL40 DISPLAY

MASTER

All Messages

Are Stored Here

DL20 DISPLAY

MASTER

All Messages

Are Stored Here

RS-485

RS-232

RS-422

RS-485 RS-485

DL50 DISPLAY DL50 DISPLAY

DL50 DISPLAY

T o Other Dataliner Displays

DL50 DISPLAY

T o Other Dataliner Displays

Host Programmable Controller*

or Computer

SLC 5/03 or 5/04

PLC or SLC Controller

RS-232 Interface

DL50 DISPLAY

*PLC-5/11, 5/30, 5/40, 5/60, and 5/80

RS-232 Interface

DL50 DISPLAY

MessageView Terminal

Remote I/O

RS-232 Interface

DL50 DISPLAY

2–7

Chapter 2

Introduction to the DL50

Host Programmable Controller,

Computer or Workstation

Host Programmable Controller,

Computer or Workstation

Figure 2.3 Communications Overview (continued)

RS-232 Interface

DL50 DISPLAY

RS-232 Interface

Host Programmable Controller

BASIC Module (Catalog No. 1771-DB) Peripheral Communications Module (Catalog No. 1771-GA) ASCII I/O Module (Catalog No. 1771-DA) Flexible Interface Module (Catalog No. 2760-RB)

Communication Examples

RS-232  RS-485

Converter

RS-232

RS-485

T o Other Dataliner Displays

RS-485 RS-485

DL50 DISPLAY

RS-485 RS-485

DL50 DISPLAY DL50 DISPLAY

DL50 DISPLAY

T o Other Dataliner Displays

Refer to Chapter 6 (Slave Mode Operation / Examples) and Chapter 4 (Installing the DL50) for specific host device interface connections and programming examples.

2–8

Chapter

Chapter Objectives

DIP Switch Locations

A–B

Configuring the DL50

This chapter describes how to configure the DL50 using DIP switches.

Figure 3.1 shows the location of the DIP switches used for configuration.

Figure 3.1 DIP Switch Locations

DL50 Processor Board (Refer to Figure 2.2 for Location)

DIP Switch Functions

RESET RESET

1 2345 678

F F

DIP Switch S1 DIP Switch S2 DIP Switch S3

1 2345 678

F F

1 2345 678

F F

The three 8 position DIP switches select the following functions:

• Slave Address

• Duplex or Simplex Protocol

• Character Height

• Baud Rate

• Mode Selection

• Checksum Enable/Disable (Duplex protocol only)

• Default Color (Tri-color displays only)

3–1

Chapter 3

Configuring the DL50

Setting Switches

S1 S2 S3

12345 678

SLAVE ADDRESS

(MSB  LSB)

PROTOCOL

ON = Duplex OFF = Simplex

CHARACTER HEIGHT

2 3

OFF OFF = 2.1 INCH OFF ON = ON OFF = Auto-Select

4.8 INCH

Figure 3.2 illustrates how to select the various functions with DIP switches.

Figure 3.2 DIP Switch Functions

ON OFF

12345678 12345678

ON OFF

DISPLAY TYPE

1 2

OFF OFF = 2706-F11J OFF ON = ON OFF = 2706-F11JC ON ON = 2706-F21JC

2706-F21J

Reserved

DEFAULT COLOR*

3 4

OFF OFF = Red OFF ON = ON OFF = Amber ON ON = Reserved (Red)

*Tri-color displays only.

ON OFF

BAD CODE CHECKSUM 8

ON = Bad Checksum

Simulated

OFF = Normal

Operation

Green

3–2

BAUD RATE

4 5

OFF OFF = 300 OFF ON = ON OFF = 9600 ON ON = 19200

1200

OPERATING MODE

6 7

OFF OFF = Slave OFF ON =

Test

DUPLEX CHECKSUM

ON = Enabled OFF = Disabled

Chapter 3

Configuring the DL50

Selecting Slave Address

If the “slave mode” has been selected, switches S1-1 through S1-8 define an address for the DL50 display. The values for each switch are illustrated below. The address of the DL50 is the sum of the values for all of the switches (1 - 8) that are turned on.

Note: SLAVE MODE is always selected for normal operation.

Slave Address

Switch Number 1 2 3 4 5 6 7 8 Value (decimal) 128 64 32 16 8 4 2 1

Addressing Example

Switch Number 1 2 3 4 5 6 7 8

Switch Position ON OFF ON OFF OFF ON ON OFF

The above example address = 128 + 32 + 4 + 2 = 166.

Note: Appendix D provides switch positions for all possible addresses. Note: A display with a slave address of 127 (Simplex Protocol) or 255

(Duplex Protocol) will accept all messages regardless of the message address.

            

Certain other slave addresses are not valid for DL50 displays when connected as slaves to a DL20 or DL40 master. The illegal DL20/DL40 decimal addresses are: 0, 4, 6, 7, 13, 16, 18, 20, 22, 43, 45, 48-57, and 128-255.

When multiple DL50 displays are placed on one RS-485 link, more than one DL50 can have the same address when using Simplex Protocol. DL50’s with the same address respond to all commands addressed to them.

Note: DL50’s operating in Duplex Protocol cannot have the same address with the exception of address 255.

3–3

Chapter 3

g Char

Configuring the DL50

Selecting Protocol

The DL50 communicates with a host device using strings of ASCII characters. The DL50 can communicate using one of two protocols:

• Simplex. When simplex protocol is selected, the DL50 does not provide

any response to a master device. The master sends out packets of data, each containing message text and other information. The DL50 uses this information to display messages.

• Duplex. When duplex protocol is selected, the DL50 responds to

messages with handshaking and checksum bytes.

Switch S2-1 selects the protocol:

Protocol Selection Switch

Protocol

Duplex ON

Simplex OFF

Note: Select Simplex when operating the DL50 as a slave to DL20 or DL40 message displays.

Switch Number S2-1

Selectin

acter Height

When using Simplex Protocol, switches S2-2 and S2-3 determine character height as shown below.

Character Height

2.1 inch (53.4 mm) OFF OFF

4.8 inch (114 mm) OFF ON Auto-Select ON OFF

Reserved ON ON

Character Height Switches

Switch Number S2-2 Switch Number S2-3

If you are using a 4 line DL20 or DL40 as a master, the Auto-Select function allows the DL50 to select the character height based upon the line number as shown in Table 3.A.

When using duplex protocol, message attributes such as character height are selected using slave mode commands (refer to Chapter 5).

3–4

Chapter 3

Configuring the DL50

Table 3.A Character Height With Auto-Select Enabled

Selecting Baud Rate

Line Number From Master

1 1 2 2 2.1 inches (53.4 mm) 3 4

➀ Line height is for multiple line messages. If a one line message is received, line height is 4.8 inches (121.9 mm). ➁ Only a 4 line Dataliner can send out line number 3. ➂ Message packet is ignored. ➃ A line number of 30 indicates that the host is requesting that the text be displayed on both lines 1 and 2. The first

20 characters (small display) or 40 characters (large display) will be displayed on line 1, and the second 20 characters (small display) or 40 characters (large display) on line 2. If more than 40 characters (small display) or 80 characters (large display) are received, characters (41-80) or (81 to 160) will be displayed on the second screen and characters (81-120) or (161 to 240) will be displayed on the third screen, etc.

Text is Displayed On This

Line

1 ➁

➂

1 & 2

➃

Auto-Select

Character Height

2.1 inches (53.4 mm) ➀

4.8 inches (121.9 mm) Not Applicable

2.1 inches (53.4 mm)

The baud rate must be set to match the baud rate of the host device. The DL50 will display the selected baud rate as one of its initial power up prompts.

Baud Rate

300 OFF OFF 1200 OFF ON 9600 ON OFF

19200 ON ON

Baud Rate Switches

Switch Number S2-4 Switch Number S2-5

Note: When operating the DL50 as a slave to a DL20 or DL40, 9600 Baud is recommended.

3–5

Chapter 3

Configuring the DL50

Selecting Operating Mode

Enabling/Disabling Checksum

Slave mode is the standard operating mode for the DL50. If the DL50 is not operating properly, the Diagnostic mode will help isolate the problem (refer to Chapter 8).

Mode

Slave Mode OFF OFF

Diagnostics Mode OFF ON

Reserved ON OFF Reserved ON ON

Operating Mode Switches

Switch Number S2-6 Switch Number S2-7

This switch enables and disables the checksum for duplex protocol messages. Duplex messages to the DL50 require a checksum field. However with the checksum disabled, the contents of the checksum field are ignored.

Checksum

Enabled ON

Disabled OFF

Duplex Checksum Switch

Switch Number S2-8

Selecting Display Type

Selecting Default Display Color

This switch is factory set for the type of display hardware being used. Do not change the setting of this switch. The chart below is for reference only.

Type

Catalog No. 2706-F11J OFF OFF

Catalog No. 2706-F21J OFF ON Catalog No. 2706-F11JC ON OFF Catalog No. 2706-F21JC ON ON

Display Type Switches

Switch Number S3-1 Switch Number S3-2

This switch applies to the tri-color displays (Catalog No. 2706-FllJC,

-F21JC). These switches have no affect on the single color displays. If a message does not specify display colors, the default color is used.

Default Color

Red OFF OFF Green OFF ON Amber ON OFF

Reserved (Red) ON ON

Display Type Switches

Switch Number S3-3 Switch Number S3-4

3–6

Chapter 3

Configuring the DL50

DL50 Reset

The DL50 loads DIP switch settings on power-up and when the RESET button is pressed. The RESET switch is located on the left side of the processor board (refer to Figure 3.3).

Figure 3.3 Reset Switch

Reset Switch

RESET RESET

Press this momentary switch to begin the reset. The DL50 will enter the self-test mode and display power-up status information as shown in Figure 3.4.

3–7

Chapter 3

Configuring the DL50

Figure 3.4 DL50 Self-T est Sequence

Protocol Text Mode

Slave Address

Self Test Baud Rate

Protocol: DUPLEX Checksum: ON

ON, OFF

DL50 Type Firmware Version

Left Side LEDs Illuminated ➀

SLAVE ADDR: XXXX SUB-ADDR: XXXX

SELF TEST: PASS Baud Rate: XXXXX

Simplex

Duplex

Mode

DL50 F11JC TRI-COLOR Firmware Ver: X.XX

300, 1200, 9600, 19200

Protocol: SIMPLEX Mode: Small Text

Small Text, Large Text Auto-Select

F1 1J, F21J RED F1 1JC, F21JC TRI-COLOR

3–8

Right Side LEDs Illuminated ➀

Diagonal Line Scrolls Right to Left ➁

➀ On tri-color versions of the DL50, the LEDs on the left and right sides are

momentarily illuminated in red, green and amber.

➁ On tri-color versions of the DL50, red, green, and amber diagonal lines

move simultaneously across the screen from right to left.

Chapter

Chapter Objectives

Mounting Dimensions

3/4 inches

(19 mm)

19 3/16 inches

(487 mm)

A–B

Installing the DL50

This chapter describes how to mount the DL50. Instructions are also provided on connecting the DL50 to communications lines and power source.

Figure 4.1 shows the mounting dimensions of the displays.

Figure 4.1 Mounting Dimensions

19 3/16 inches

(487 mm)

13/16 inches

(21.0 mm)

24 3/4 inches

(629 mm)

Catalog No. 2706-F11J, -F11JC

40.4 inches

(1026.2 mm)

24 3/4 inches

(629 mm)

37 1/8 inches

(943 mm)

Catalog No 2706-F21J, -F21JC

76.0 inches

(1930.4 mm)

10 11/16 inches

(271 mm)

24 3/4 inches

(629 mm)

10 11/16 inches

(271 mm)

4–1

Chapter 4

Installing the DL50

Mounting Methods

Surface Mounting

There are four methods of mounting the displays

• Flush surface mount using the angle brackets supplied with the DL50.

• Surface mount using optional adjustable brackets (Catalog No. 2706-NJ3)

• Back-to-Back using adjustable brackets (Catalog No. 2706-NJ3).

• Chain suspended (individually or back-to-back)

ATTENTION:

There are two methods of mounting the display on a vertical surface such as a wall:

The displays are heavy. Proper installation techniques are necessary to avoid injury from a falling display. Depending upon the display and type of installation, two or more people are required to install a display. Make sure the display is installed on a structure able to accommodate the weight of the display.

Catalog No. 2706-F11J, -F11JC: 40 pounds (18 kilograms) Catalog No. 2706-F21J, -F21JC: 75 pounds (34 kilograms)

• Directly mount the display to the wall using the angle brackets that are

factory-installed before shipment. See Figure 4.2.

• Use the optional adjustable brackets (Catalog No. 2706-NJ3). See

Figure 4.3.

ATTENTION:

The two flush wall-mount angle brackets (shipped pre-installed) may be removed and attached to the wall, then the DL50 can be mounted on them.

Mount the display only to concrete walls or steel/wood beams. Do not mount the display on plaster or other soft material walls. Failure to follow this warning could result in personal injury or damage to the display.

ATTENTION:

All angle bracket bolts must be torqued to 53-61 in.-lbs.

4–2

Chapter 4

ÁÁÁÁ

Installing the DL50

Wall Mounting- Using Angle Brackets

Mount the DL50 directly to a wall using screws and wall anchors as shown in Figure 4.2.

Figure 4.2 Using the Wall-Mounting Angle Brackets Provided on the Display

Wall Anchor

Screw

Bolt

DL50

4–3

Chapter 4

Installing the DL50

Wall Mounting- Using Adjustable Brackets (Catalog No. 2706-NJ3)

Mount the DL50 to a wall using Adjustable Brackets (Catalog No. 2706-NJ3) as shown in Figure 4.3.

Note: Catalog No. 2706-NJ3 contains 2 pairs of brackets. You will need 2 pairs of brackets to mount Catalog No. 2706-F11J, -F11JC and 4 pairs of brackets to mount Catalog No. 2706-F21J, -F21JC.

Figure 4.3 Wall Mounting With Adjustable Brackets

DL50

Mounting Bracket

(Catalog No. 2706-NJ3)

Angle Adjustment Pin

Wall Anchor

Screw

Pivot Bolt

4–4

Screw, Lockwasher, Nut

To adjust the viewing angle:

1) Support DL50 and remove Angle Adjustment Pin (see Figure 4.3)

2) Position DL50 at the proper angle.

3) Align bracket holes and re-insert Angle Adjustment Pin.

Chapter 4

Installing the DL50

Chain Suspension

The DL50 can be suspended from a pair of chains. Each chain must be capable of supporting:

400 pounds (182 kilograms) for Catalog No. 2706-F11J, -F11JC

750 pounds (341 kilograms) for Catalog No. 2706-F21J, -F21JC

ATTENTION: Make sure the supporting chain meets the minimum specifications listed above. Failure to follow this

warning could result in damage to the display and personal injury.

Figure 4.4 Chain Suspension

Chain Must Be Able To Support:

400 pounds (182 kg) when hanging Catalog No. 2706-F11J, -F11JC Displays

750 pounds (341 kg) when hanging Catalog No. 2706-F21J, -F21JC Displays

Adjust Length of This Chain To Change Viewing Angle

DL50

Angle Mounting Bracket

Note: The angle mounting bracket may be removed for chain-suspended installations.

4–5

Chapter 4

Installing the DL50

Back to Back Mounting

Mount two DL50 displays back-to-back with or without mounting brackets (Catalog No. 2706-NJ3). These mounting methods are illustrated in Figure 4.5 and Figure 4.6. The chains attached to each display must be able to support:

400 pounds (182 kilograms) for Catalog No. 2706-F11J, -F11JC 750 pounds (341 kilograms) for Catalog No. 2706-F21J, -F21JC

The chain supporting both displays must be able to support:

800 pounds (364 kilograms) for two Catalog No. 2706-F11J, -F11JC displays

1500 pounds (682 kilograms) for two Catalog No. 2706-F21J, -F21JC displays

ATTENTION: Make sure the supporting chains meet the

minimum specifications listed above. Failure to follow this

warning could result in damage to the display and personal injury.

4–6

Chapter 4

Installing the DL50

Figure 4.5 Back to Back Mounting Without Adjustable Brackets

Chain Must Be Able To Support:

800 pounds (364 kg) when hanging two Catalog No. 2706-F11J, -F11JC Displays

1500 pounds (682 kg) when hanging two Catalog No. 2706-F21J, -F21JC Displays

Chains Must Be Able To Support:

400 pounds (182 kg) when hanging two Catalog No. 2706-F11J, -F11JC Displays

750 pounds (341 kg) when hanging two Catalog No. 2706-F21J, -F21JC Displays

DL50

4–7

Chapter 4

Installing the DL50

Figure 4.6 Back to Back Mounting With Adjustable Brackets

Chain Must Be Able To Support:

800 pounds (364 kg) when hanging two Catalog No. 2706-F11J, -F11JC Displays

1500 pounds (682 kg) when hanging two Catalog No. 2706-F21J, F21JC Displays

Chains Must Be Able To Support:

400 pounds (182 kg) when hanging two Catalog No. 2706-F11J, -F11JC Displays

750 pounds (341 kg) when hanging two Catalog No. 2706-F21J, -F21JC Displays

DL50

Angle

Adjustment Pin

Adjustable Brackets

(Catalog No. 2706-NJ3)

DL50

Note: Catalog No. 2706-NJ3 contains 2 pairs of brackets. You will need 2 pairs of brackets to mount Catalog No. 2706-F11J, -F11JC and 4 pairs of brackets to mount Catalog No. 2706-F21J, -F21JC.

To adjust the viewing angle:

1) Support DL50 and remove Angle Adjustment Pins (see Figure 4.6).

2) Position DL50 at the proper angle.

3) Align bracket holes and re-insert Angle Adjustment Pins.

4–8

Chapter 4

Installing the DL50

Wiring Recommendations

European Union Directive Compliance

Careful wire routing helps cut down on electrical noise. To reduce electrical noise, the DL50 should be connected to its own branch circuit. (See the next section for power requirements in the European Union or EFTA regions.)The input power source should be protected by a fuse or circuit breaker rated at no more than 15 Amps. Route incoming power to the DL50 by a separate path from the communication cables.

ATTENTION: Do not run signal wiring and power wiring in the same conduit!

Where power and communications lines must cross, they should cross at right angles. Communications lines can be installed in the same conduit as low level DC I/O lines (less than 10 Volts).

All communications lines should be shielded. The shield should be connected to ground only at the transmitting device.

If this product is installed within the European Union or EFTA regions, the following regulations apply:

EMC Directive

This apparatus is tested to meet Council Directive 89/336/ECElectromagnetic Compatibility (EMC) using the following standards

•

EN 50081-2 EMC – Generic Emission Standard, Part 2 Industrial Environment

• EN 50082-2

EMC – Generic Immunity Standard, Part 2, Industrial Environment

LVD Directive

This apparatus is tested to meet Council Directive 73/23/EEC with amendments, including 93/68/EEC Low Voltage (LVD) using the following standard:

• EN 60950 Safety of Information Technology Equipment.

Intended Use of Product

The products described in this manual are intended for use in an industrial environment as defined in Appendix H.

4–9

Chapter 4

Installing the DL50

Grounding Recommendations

Connecting Power

Grounding is an important safety measure in electrical installations. Grounding also helps eliminate the effects of noise due to Electromagnetic Interference (EMI).

An authoritative source on grounding requirements is the National Electrical Code published by the National Fire Protection Association of Boston, Massachusetts. Article 250 of the Code describes the types and sizes of wire conductors and safe methods of grounding electrical equipment and components.

ATTENTION: To avoid risk of shock, Earth Ground must be

connected to the display at all times.

Connect power line to the DL50 terminal blocks as shown in Figure 4.7. The DL50 will accept 95-120 or 190-240 Volts AC, 50-60 Hz input power.

Figure 4.7 Electrical Power Connections

L1L2N

PE (Protective Earth)

Connect power line ground

to this terminal.

4–10

E.GND

Processor Board

ATTENTION: Do not apply power to the display until all

electrical connections, including communications lines, have

been connected.

ATTENTION: Terminal 3 (Ground Terminal) must be connected

to a reliable low impedance earth ground to protect the display

against electrical noise. The ground will also help protect

personnel from electrical shock if a voltage is shorted to the

enclosure.

Factory Installed Ground Wire (Green/Yellow)

NO NC

COM

Chapter 4

Installing the DL50

1. Connect ground wire to the chassis grounding terminal. Then verify that the factory installed earth ground wire is connected between the chassis PE (Protective Earth) terminal and the earth ground terminal on the power input connector.

Note: If the power lines enter the left side of the display, route the AC lines through the cable guides on the upper part of the display. Route the communication lines through the cable guides on the bottom half of the display.

2. Connect input power lines, L1 and L2N. Do not apply power until all connections have been made

3. Connect communications lines as described in the following sections.

4. Apply power and verify power-up messages as shown in Chapter 3.

Annunciation Relay Connections

Figure 4.8 shows a typical connection between the annunciation relay and an annunciator.

ATTENTION: Do not use the relay for control purposes. Use relay for annunciator only. Failure to follow this warning could

result in unexpected switching of control circuits.

ATTENTION: When power is removed, the annunciator will be energized if the normally closed outputs are used.

Figure 4.8 Annunciation Relay Connections (Normally Open)

DL50

RELAY TERMINALS

NO-

NC-

1 2

COM-

RELAY

NO = Normally Open NC = Normally Closed

COM = Common

Relay is rated for:

3A @ 240V AC resistive load 3A @ 30V DC resistive load

ALARM

4–11

Chapter 4

Installing the DL50

RS-232 Connections

The RS-232 interface allows connection of a single DL50 display, with a maximum recommended cable length of 50 feet



Figure 4.9 shows the location of the DL50’s RS-232 port terminals. The terminals are labeled:

Terminal Number* Label Definition

1 T Transmit Line 2 R Receive Line 3 GND Signal Ground

* Pin #1 is on top.

Figure 4.9 RS-232 Terminal Location

RESET

RS-232 Connection T erminals

T (Terminal #1) R (Terminal #2) G (Terminal #3)

4–12

Chapter 4

Installing the DL50

Figure 4.10 shows a typical connection between a host device RS-232 port and the DL50 display.

       

The DL50 display is considered a “DTE” (Data Terminal Equipment) device. The connection diagram assumes that the RS-232 port of the host device is also a “DTE” type, as most are. If instead it is a “DCE” (Data Communications Equipment) type, you should interchange the wires on pins 2 and 3.

We recommend that you connect the shield at the one end only, as shown. Note: If noise problems occur between a DL20 master display and a DL50

display when RS-232 communications are used, we recommend that you connect the shield of the communication cable to chassis ground at both ends. However, the earth ground for each device must be at the same potential.

Figure 4.10 RS-232 Connections

DL50

RS-232 TERMINALS

T -

RG-

1 2

RS-232 TxD (Transmit) RS-232 RxD (Receive)

Ground

Cable, Belden 9842

Note: Some devices require that certain hardware handshaking lines be asserted.

This may require a jumper between the CTS and RTS terminals. Refer to the applicable product literature.

TYPICAL HOST DEVICE

(25-pin) (DTE)

Equipment Ground

Transmit

Receive

Signal Common

4–13

Chapter 4

Installing the DL50

RS-485 Connections

The RS-485 interface has these advantages over the RS-232

• Improved noise immunity.

• DL50 displays can be a distance of up to 4000 feet (1200 m) from the

host device.

• Up to 32 devices can be connected directly to the RS-485 port of the host

controller. Up to 100 DL50 displays can be addressed when line drivers are used.

Figure 4.11 shows the location of the DL50’s RS-485 port terminals. The terminals are labeled:

Label Function Definition

1 E. GND Earth Ground 2 SHLD Shield 3 COM Common 4 + RS-485 + (B) 5 - RS-485 - (A) 6 TERM Termination

Figure 4.11 RS-485 Terminal Location

RS-485 Connection T erminals

4–14

RESET

E. GND (Terminal #1) SHLD (Terminal #2)

COM (Terminal #3) + (Terminal #4)

- (Terminal #5)

TERM (Terminal #6)

Shield

Common RS-485 (+) RS-485 (-)

HOST

TERMINALS

DL50

RS-485

TERMINALS

Chapter 4

Installing the DL50

Figure 4.12 shows a typical connection between a host device RSĆ485 port and

DL50 displays. We recommend that you use Belden 9842 cable.

Note that pin or terminal numbers are not shown for the host device. This is because the terminal numbers vary for different products. For actual pin numbers, refer to the appropriate host device product literature.

We recommend that you connect the shield to ground at one end only, as shown.

Figure 4.12 RS-485 Connections

DL50

RS-485

TERMINALS

SHLD

COM

–

COM

–

DL50

RS-485

TERMINALS

SHLD

COM

–

To Other DL50s

Note: Some devices require that certain

hardware handshaking lines be asserted. Refer to the applicable product literature.

Note: RS-232 devices such as personal computers can communicate through the DL50 RS-485 port using an RS-232 ! RS-485 converter such as a Black Box LD-485A-MP.

Shield

Grounding

Connect shield (terminal #2) to ground (terminal #1) at any one node (only) on RS-485 Network

E. GND

SHLD

COM +

–

TERM

BLACK BOX

LD485A-MP

RS-232 RS-485

RS-232

RS-485

Network

Termination

Terminate the network at the last device. Terminate a DL50 by connecting RS-485 + (terminal #4) to TERM (terminal #6).

E. GND

SHLD

COM

+ –

TERM

DL50 DISPLAY

To Other DL50 Displays

DL50 DISPLAY

4–15

Chapter 4

Installing the DL50

Connection to DL20/DL40 “Master” Displays

As previously described, a DL50 display can be connected to the RS-232 or RS-422 port of a DL20 display or the RS-485 port of a DL40 display (Master). When this type of configuration is used, all messages are stored in the Master DL20/DL40 displays. All the host controller is required to do is trigger a particular message stored in the Master DL20/DL40 display.

Up to 32 DL50 slave displays can be connected (without line drivers) to the RS-485 port of the DL40 or RS-422 port of the DL20. When particular messages are created, they can be assigned an attribute which designates that messages be displayed on a particularly addressed slave DL50 display, all slave DL50 displays, or just the host DL40/DL20 display. Addresses are assigned to Slave DL50 displays by setting DIP Switches as described in Chapter 3 of this manual.

The DL40 (Firmware V. 3.00 or later) supports control of the DL50 relay, and control of the display color in tri-color displays, on a per-message basis. These controllable DL50 features are accessed and configured using the message attribute selections within the DL40 Offline Programmer software (2706-ND1 Series D or later).

Note: Whatever is sent out of the DL20’s RS-422 port is also sent out the RS-232 port, and vice versa.

For more information on DL20 displays (Master) refer to DL20 display User’s Manual Publication 2706-801.

Host Programmable Controller

or Computer

Host Programmable Controller

or Computer

1771 Remote I/O or Parallel I/O

Parallel I/O Interface

Figure 4.13 illustrates possible DL20 and DL40 Master/Slave configurations:

Figure 4.13 DL20/DL40 Master/Slave Configurations

DL50 DISPLAY

DL40 DISPLAY MASTER

All Messages

Are Stored Here

DL20 DISPLAY MASTER

All Messages

Are Stored Here

RS-485

RS-232

RS-422

DL50 DISPLAY

RS-485 (RxD) RS-485 (RxD)

To Other DL50 Displays

DL50 DISPLAY

To Other DL50 Displays

4–16

DL50 DISPLAY DL50 DISPLAY

MASTER

Host Programmable Controller

or Computer

1771 Remote I/O or Parallel I/O

DL40

Chapter 4

Installing the DL50

Note: If noise problems occur between a DL20 master display and a slave DL50 display (RS-232), we recommend that you connect the shield of the communication cable to chassis ground at both ends. The earth ground for each device must be the same potential to insure that ground currents do not flow.

Connect the slaves to the master using Belden 9842 cable. Figure 4.14 shows the DL40 to DL50 wiring connections.

Figure 4.14 RS-485 DL40 / RS-422 DL20 Master to DL50 Slave(s) Wiring Connections

1* 2

3 4 5

SHLD

COM

+ –

DL50

RS-485

TERMINALS

SHLD

COM

–

DL50

RS-485

TERMINALS

SHLD

COM

–

To Other DL50s

* Refer to Figure 4.12 for shield grounding and line termination information.

Host Programmable Controller

or Computer

Parallel I/O Interface

DL20 MASTER

RS-422 TERMINALS

8 5 4

Ground

RS-422 (+)

RS-422 (-)

+ –

4000 feet (1200 meters) maximum

DL50

RS-485

TERMINALS

SHLD

3 COM

–

4000 feet (1200 meters) maximum

DL50

RS-485

TERMINALS

2 3 4 5

SHLD

COM

+ –

To Other DL50s

4–17

Chapter 4

Installing the DL50

Connection as Slave to DL20 “Master” RS-232 Port

Host Programmable Controller

or Computer

Parallel I/O Interface

It is also possible to use the RS-232 output of the DL20 to connect to one DL50 slave, however the distance limitation is 50 feet. These connections are shown in Figure 4.15.

Figure 4.15 RS-232 DL20 Master to DL50 Slave Wiring Connections

DL20 MASTER

Signal Ground

6 7

RS-232 (TxD)

RS-232 (RxD)

Shield

DL50

RS-232 TERMINALS

1 2

DL50

RS-485

TERMINALS

R G

3 4

5 6

4–18

50 feet (15 meters) maximum

Chapter 4

Installing the DL50

Connection to Personal Computers

RS-232 TERMINALS

T -

RG-

DL50

1 2

The DL50 display may be connected to personal computers through an RS-232 port. Either Simplex or Duplex protocol may be used in applications with a personal computer as host.

• For single-point connections of 50 feet or less, the DL50 RS-232 port

may be connected directly to the personal computer RS-232 port. See Figure 4.16.

Figure 4.16 Personal Computer to DL50 RS-232 Port

Computer RS-232 port

RS-232 TxD (Transmit) RS-232 RxD (Receive) Signal Ground

Signal Ground

RS-232 TxD (Transmit)

RS-232 RxD (Receive)

DB-9 Connector

• For installations greater than 50 feet, or for multi-drop networks

containing multiple DL50 displays, the personal computer can be connected to a DL50 RS-485 network through a multi-point RS-232 to RS-485 converter. See Figure 4.17.

A multi-point converter is used for:

• single DL50 installations with a cable length over 50 feet, or

• multi-drop network containing multiple DL50 displays.

Any RS-232 host (such as a personal computer) can be connected to a DL50 RS-485 network through a multi-point RS-232 to RS-485 converter such as Black Box Corporation’s Model LD485A-MP.

Note: The output of LD485A-MP is a half-duplex RS-485 network that will support up to 32 multi-dropped DL50 displays. Up to 100 DL50 displays can be connected when line drivers are installed.

4–19

Chapter 4

Installing the DL50

DL50

RS-485

TERMINALS

EGND SHLD

COM

+ –

TERM

1 2

3 4 5 6

Figure 4.17 Personal Computer to DL50 RS-485 Port(s)

NOTE: CONNECT SHIELD TO EGND AT ONE NODE ONLY

Shield

Black Box LD485A-MP

RxB

RxA

TxB

TxA

RS-485

DB-25

RS-232

Computer RS-232 port

DB-9 Connector

Signal Ground

2 3 7

Note: Allen-Bradley 2706-NC15 cable will connect directly from a personal computer serial port (male DB-9) to the Black Box LD485A-MP.

Transmit

Receive

Black Box LD485A-MP Configuration

Configure the Black Box (LD485A-MP) converter as follows:

1. Remove cover and set the converter as a DCE device using the XW1A

jumper. This is a 16-pin DIP jumper.

2. Short TxA and RxA on TB1 of the converter.

3. Short TxB and RxB on TB1 of the converter.

4. Set jumper W8 to half-duplex operation.

5. Set jumper W9 for a 50 millisecond RTS/CTS delay time.

6. Set jumper W15 to B-C for data enabled operation.

7. Set jumper W16 to A-B for 5 millisecond turnaround delay.

8. Set jumper W17 to A for 1 millisecond driver delay.

9. Set jumper W18 to A-B for DTR enabled driver.

10.Set switch S2 to the unterminated position.

11. Replace cover.

12.Set Normal/Loopback switch on front panel to Normal.

4–20

ATTENTION: The two jumpers to short TxA to RxA and TxB to RxB are essential for converter function. See steps 2 and 3

above, and Figure 4.17.

Chapter 4

Installing the DL50

Connection to Allen-Bradley Programmable Controllers

Most Allen-Bradley Programmable Logic Controllers (PLCs) provide a variety of methods to interface RS-232 or RS-485 devices. They include the:

Mini PLC-2 Mini PLC-2/15, -2/05, etc. PLC-2/20 (1772-LP1, -LP2) PLC-2/30 (1772-LP3) PLC-3 PLC-3/10 PLC-5 Family SLC 500 Family The most common means of providing serial interfaces for the above

Programmable Controllers include the following optional modules: BASIC Module- Catalog No. 1771-DB

(All PLC-5 Programmable Controllers) Peripheral Communications Module- Catalog No. 1771-GA

(PLC-3 Family only) ASCII I/O Module- Catalog No. 1771-DA

(All PLC-5 Programmable Controllers) Flexible Interface Module- Catalog No. 2760-RB

(All PLC-5 Programmable Controllers) SLC 500 BASIC Module- Catalog No. 1746-BAS

(All SLC 500 Small Logic Controllers)

4–21

Chapter 4

Installing the DL50

BASIC Module Catalog No. 1771-DB Catalog No. 1746-BAS

The Allen-Bradley BASIC Modules (Catalog No. 1771-DB and Catalog No. 1746-BAS) provide a cost-effective and efficient serial interface to Allen-Bradley PLC and SLC controllers. The BASIC Modules store all messages in battery-backed RAM or EPROM. The modules can be programmed to transmit these messages along with status or variable data from the programmable controller.

The BASIC Modules support both RS-232 and RS-422 applications. For more information on the BASIC Modules, refer to the user’s manuals. Chapter 6 provides programming examples.

Figure 4.18 shows how to connect the RS-232 port of the DL50 to the BASIC Modules.

Figure 4.18 RS-232 Connection to BASIC Module

1771-DB RS-232

PERIPHERAL PORT

DL50

RS-232 TERMINALS

Shield

Chassis / Shield

TxD Output

RxD Input

Signal Ground

7 4 5

4–22

DL50

RS-232 TERMINALS

DL50

RS-485

TERMINALS

1 2 3

Shield

1746-BAS

RS-232 PORT

RxD Input

TxD Output

Signal Ground

5 4

6 7

Chapter 4

Installing the DL50

Peripheral Communications Module Catalog No. 1771-GA

The Peripheral Communications Module (Catalog No. 1775-GA) is only applicable to Allen-Bradley PLC-3 Family Programmable Controllers. The module plugs directly into the PLC-3 chassis. It has several serial ports and is capable of performing many unique tasks at one time for a PLC-3 System. The Peripheral Communications Module supports RS-232 serial port specifications.

Figure 4.19 shows how to connect the RS-232 port of the DL50 to a Peripheral Communications Module.

Note: Using an RS-232 RS-485 converter such as the Black Boxt

LD-485A-MP you can connect the Peripheral Communications Module to the RS-485 port of one or more DL50(s). See figure below.

Figure 4.19 RS-232 Connection to Peripheral Communications Module

1771-GA

RS-232 PORT

Chassis / Shield

TxD Output

RxD Input

Signal Ground

7 4 5

DL50

RS-232 TERMINALS

Shield

E. GND SHLD COM

–

TERM

DL50

RS-485

TERMINALS

1 2 3

Note: Connect shield to ground at one node only

BLACK BOX LD-485A-MP

RxB RxA TxB

TxA

Consult Black Box instruction sheet for wiring connections. Connections depend upon converter setup.

Shield

1771-GA

RS-232 PORT

Chassis / Shield

TxD Output

RxD Input

Signal Ground

7 4

5 6

4–23

Chapter 4

Installing the DL50

ASCII I/O Module Catalog No. 1771-DA

The ASCII I/O Module (Catalog No. 1771-DA) provides a serial interface for almost all Allen-Bradley programmable controllers. It can be plugged into any slot of a standard 1771 local or remote I/O rack.

The ASCII I/O Module has no memory or programming language. All DL50 display messages would be stored in the programmable controller’s memory.

Figure 4.20 shows how to connect the RS-232 port of the DL50 to a ASCII I/O Module.

Note: Using an RS-232 RS-485 converter such as the Black Boxt LD-485A-MP you can connect the ASCII I/O Module and the RS-485 port of one or more DL50(s). See figure below.

Figure 4.20 RS-232 Connection to an ASCII I/O Module

1771-DA

RS-232 PORT

Chassis / Shield

TxD Output

RxD Input

Signal Ground

4 5

DL50

RS-232 TERMINALS

Shield

E. GND SHLD COM

–

TERM

4–24

DL50

RS-485

TERMINALS

1 2 3

Note: Connect shield to ground at one node only

BLACK BOX

LD-485A-MP

RxB RxA TxB

TxA

Consult Black Box instruction sheet for wiring connections. Connections depend upon converter setup.

Shield

1771-DA

RS-232 PORT

Chassis / Shield

TxD Output

RxD Input

Signal Ground

7 4

5 6

Chapter 4

Installing the DL50

Flexible Interface Module Catalog No. 2760-RB

FLEXIBLE

INTERFACE

MODULE

(RS-422)

Shield

Common RS-485 (+) RS-485 (–)

Use the Flexible Interface Module with either the Catalog No. 2760-SFC1 or 2760-SFC2 cartridge with Dumb Terminal (DT) protocol. Multidrop up to 31 DL50’s on each of the three communications ports on the module.

Figure 4.21 shows how to connect the RS-485 port of the DL50 to a Flexible Interface Module RS-422 port.

Figure 4.21 RS-485 Connection to a Flexible Interface Module

DL50

RS-485

TERMINALS

SHLD

3 COM 4 5

+ –

DL50

RS-485

TERMINALS

2 3 4 5

SHLD

COM

–

DL50

RS-485

TERMINALS

2 3 4 5

SHLD

COM

+ –

To Other DL50s

Flexible Interface Module

Network Termination

Terminate RS-422 network at Flexible Interface Module. Refer to User Manual.

Shield

Grounding

Connect shield (terminal #2) to ground (terminal #1) at any one node (only) on RS-422 Network.

1 2 3 4 5 6

E. GND SHLD

COM

+ –

TERM

Network

Termination

Terminate last DL50 by connecting RS-422 + (terminal #4) to TERM (terminal #6)

1 2 3 4 5 6

E. GND SHLD

COM

+ –

TERM

4–25

Chapter

Chapter Objectives

Protocols

A–B

Serial Communications

This chapter describes how to communicate with the DL50 using a simple ASCII string format. The DL50 supports both simplex and duplex communications protocols. Each will be addressed in this chapter.

Simplex Communications- In this protocol, the DL50 does not provide any responses to the master device. The DL50 receives message packets from the master device and uses this information to display text. Use this protocol when the commands are sent from Allen-Bradley Dataliner DL20 and DL40 message displays.

Duplex Communications- In this protocol, the DL50 provides a response to each command it receives. The response includes data checking bytes (Checksum) and a handshake byte (ACK/NAK). The DL50 receives message packets from the master device, transmits data checksum/handshake bytes back to the master, and uses the message data to display text.

The Duplex Protocol section starts on page 5-8.

Host Device Compatibility

Product Family Host Device Host COM Port Simplex Duplex

Dataliner Displays Dataliner DL40 Message Displays

Dataliner DL20 Message Displays

MessageView Displays

PLC 5 PLC 5 Family Programmable Controllers

SLC500 SLC 5/03 Small Logic Controller

MessageView 2706-M1D1, -M1N1, -M1F1 RS-232 YES NO

BASIC Module (1771-DB) ASCII I/O Module (1771-DA) Flexible Interface Module (2760-RB)

SLC 5/04 Small Logic Controller BASIC Module (1746-BAS)

The DL50 can communicate with a wide range of host devices using either the Simplex or Duplex protocols. These protocols are selected through dipswitch configuration of the DL50 display. Table 5.A lists typical Allen-Bradley products that can drive DL50 displays, together with the protocol(s) they can support.

Table 5.A Host Device Compatibility with Simplex and Duplex Protocol Formats

RS-485 RS-232 / RS-422

Channel #0 RS-232 RS-232/RS-485 RS-232 RS–232/RS-422

Channel #0 RS-232 Channel #0 RS-232 RS-232/RS-485

YES

NO NO

YES YES YES YES

YES YES YES

5–1

Chapter 5

Serial Communications

Simplex Protocol

The simplex data packet consists of 6 data fields as shown below:

Field 1

Optional Control

Byte

1 Byte

Field 2

ASCII Text or

Special Control

Characters

0-250 Bytes

Field 3

Optional

Display Mode

1 Byte

Field 4

Slave Address

1 Byte

Field 5

Line Number

1 Byte

Field 6

Carriage Return

1 Byte

Note: Simplex protocol is compatible with Allen-Bradley DL20 and DL40 message displays.

Field 1: Optional Control Byte

This is an optional field which indicates whether the text is to be buffered or displayed when it is received. The following control characters are used:

Table 5.B Control Byte Characters (Simplex)

Control Character

Ctrl-A 1 Append the characters to buffer. Ctrl-B 2 Append characters to buffer then display. Ctrl-C 3 Clear display line(s).

Ctrl-L 12 Initialize DL50 for Bootstrap.

The ability to append characters to the display buffer (Ctrl-A) and to display the buffer contents (Ctrl-B) allows long message text to be sent using multiple data packets.

Decimal

Value

Function

5–2

The command for initializing the Bootstrap Mode (Ctrl-L) is described in Chapter 7.

If this control byte is not included in the message packet, the DL50 will default to displaying the text. All other values of the control character are ignored.

Field 2: ASCII Text

This field contains the ASCII characters and/or special ASCII control characters (up to 250) that are to be displayed by, or to control, the DL50.

If the Optional Display Mode byte is not sent, and the packet contains more text than can be displayed on one line of the display, the message will be truncated (unless message line number is 30, see Table 3.A).

Chapter 5

)

Serial Communications

Simplex Protocol (continued

Field 3: Optional Display Mode

This optional field indicates how the message text is to be displayed. If this optional byte is not present, the Line Number (field 5) determines the display mode. The following control characters are used:

Table 5.C Display Mode Control Characters

Control Character

Ctrl-A 1 Hold Ctrl-B 2 Flash Ctrl-C 3 Scroll Ctrl-D 4 Roll Up Ctrl-E 5 Roll Down Ctrl-H 8 Roll Right

Ctrl-I 9 Roll Left Ctrl-K 11 Wipe Up Ctrl-L 12 Wipe Down Ctrl-N 14 Wipe Left

Ctrl-O 15 Wipe Right

➀ Refer to Appendix A for display descriptions.

Decimal

Value

Display Mode ➀

5–3

Chapter 5

)

Serial Communications

Simplex Protocol (continued

Field 3: Optional Display Mode (continued) Special Control Characters

When operating in the slave mode, the DL50 will recognize the following special control characters:

• Ctrl F [FLASH]

The Ctrl F (decimal 6) control character causes the DL50 to toggle between flashing and non-flashing characters. Text which is between two Ctrl F characters will flash, all other characters will be non-flashing.

For Example: Assume that the character ^ denotes a Ctrl-F. If the following message is

This is a message with ^FLASHING TEXT^ along with non-flashing text.

sent:

            

• Ctrl R [RESET]

The Ctrl R (decimal 18) control character causes the DL50 to clear all data in the message buffer, toggle the flashing message attribute to off, and reset the display color to the default specified by the dipswitch settings (see Figure 3.2). This control character does not affect a message being currently displayed.

Note: We recommend that the host device send a Ctrl-R (decimal 18) command to all slave displays when the system is powered up, and also each time before a message packet is sent to a specific slave address. This clears any data that might interfere with the new message.

• Ctrl X [RED]

The Ctrl X (decimal 24) control character changes all subsequent characters to Red until another special control character is received or the end of the message occurs. After the end of the message, the default color is re-established. (Tri-color displays only.)

• Ctrl Y [AMBER (YELLOW)]

The Ctrl Y (decimal 25) control character changes all subsequent characters to Amber until another special control character is received or the end of the message occurs. After the end of the message, the default color is re-established. (Tri-color displays only.)

• Ctrl Z [GREEN]

The Ctrl Z (decimal 26) control character changes all subsequent characters to Green until another special control character is received or the end of the message occurs. After the end of the message, the default color is re-established. (Tri-color displays only.)

5–4

Chapter 5

)

Serial Communications

Simplex Protocol (continued

Field 4: Slave Address

The slave address is a single byte field that can be any value from 1- 255, except for 6, 13,16, and 18. When connecting a DL50 to a DL20/DL40 master, the illegal decimal addresses are: 0, 4, 6, 7, 13, 16, 18, 20, 22, 43, 45, 48-57, and 128-255. A display with an address of 127 will accept all message packets regardless of the address on the packet. In addition any message packet with an address of 127 will be received by all displays.

Field 5: Line Number

When the optional bytes (field 1 and 3) are not present, the line number field specifies on which line(s) the message is displayed. The line number function depends upon the size of the display (10 or 20 character display) and the line height (selected by DIP switches). Table 5.D shows the effect of line number selection on Catalog No. 2706-F11J, -F11JC and Table 5.E shows the effect of line number selection on Catalog No. 2706-F21J, -F21JC.

Note: Catalog No. 2706-F11J, -F11JC can display one line of ten 4.8 inch characters or two lines of twenty 2.1 inch characters. Catalog No. 2706-F21J, -F21JC can display one line of twenty 4.8 inch characters or two lines of forty 2.1 inch characters.

Table 5.D Line Number Effect On Catalog No. 2706-F11J, -F11JC

Line

Display Mode

2.1 Inch Text

4.8 Inch Text

Auto-Select

➀ If the line number is 30, this means that the host is requesting the text to be displayed on both lines 1 and 2. The

first 20 characters are displayed on line 1 and the second 20 characters on line 2. If more than 40 characters are received, characters 41-80 will be displayed on the second screen, characters 81-120 on the third screen, etc.

➁ If more than 10 characters are sent, the DL50 will Roll the character text from right to left.

Number

Field 5

(Decimal)

Text Displayed On Line

1 2 3 4

Number:

2 Line Ignored Line Ignored

1 and 2 ➀

1 ➁ Line Ignored Line Ignored Line Ignored

1 ➁

1 2

1 ➁ Line Ignored

1 and 2 ➀

Character Size

(Inches)

2.1

2.1 Not Applicable Not Applicable

2.1

4.8 Not Applicable Not Applicable Not Applicable

4.8

2.1

4.8 Not Applicable

2.1

5–5

Chapter 5

)

Serial Communications

Simplex Protocol (continued

Table 5.E Line Number Effect On Catalog No. 2706-F21J, -F21JC

Line

Display Mode

2.1 Inch Text

4.8 Inch Text

Auto-Select

➀ If the line number is 30, this means that the host is requesting the text to be displayed on both lines 1 and 2. The

first 40 characters are displayed on line 1 and the second 40 characters on line 2. If more than 40 characters are received, characters 81-160 will be displayed on the second screen, characters 161-240 on the third screen, etc.

➁ If more than 20 characters are sent, the DL50 will display the message in successive 20-character sections.

Number

Field 5

(Decimal)

Text Displayed On Line

1 2 3 4

1 (1st 20 Characters)

1 (2nd 20 Characters)

2 (1st 20 Characters)

2 (2nd 20 Characters)

Number:

1 and 2

1 ➁ Line Ignored Line Ignored Line Ignored

1 ➁

1 2

1 ➁ Line Ignored

1 and 2 ➀

Character Size

(Inches)

2.1

➀

2.1

4.8 Not Applicable Not Applicable Not Applicable

4.8

2.1

4.8 (20 Characters) Not Applicable

2.1

A line number of 48 will energize the annunciation relay. A line number of 49 will de-energize the annunciation relay.

ATTENTION:

Use relay for annunciator only. Do not use relay contacts for purposes of control. Failure to follow this warning may result in unexpected equipment operation.

Field 6: Carriage Return

The Carriage Return (decimal 13) indicates the end of a message packet.

5–6

Chapter 5

)

Serial Communications

Simplex Protocol (continued

Clearing Lines of Text

         

• You can either send a message packet with a control byte (field 1) that has

a Ctrl-C (decimal 3) value, or

• You can send a message packet with the following format:

Field 1

Slave Address

1 Byte

The line number in the message packet specifies which line(s) to clear:

ASCII Character Decimal Value Function

Ctrl-A 1 Clear line 1. Ctrl-B 2 Clear line 2.

2 50 Clear all lines.

Field 2

Line Number

1 Byte

Field 3

Carriage Return

1 Byte

Performance

The DL50 display requires a time delay between successive packets sent from the host (master) to the DL50 display. This delay is referred to as the “inter-packet delay”. It is required so the DL50 can process the received data properly before the next packet is received.

These delays need to be programmed into the host system only if messages will be sent in rapid succession to the same display. The time delay interval required is a function of the display type, character size, baud rate, and packet length. Table 5.F lists the required delay times for DL50 displays operating in Simplex Protocol mode, using the worst case scenario.

Table 5.F Simplex Protocol Inter-Packet Delay Requirements 19200 Baud with Large Characters (worst case)

Display Type Packet Length Delay (milliseconds)

2706-F11J 250 characters 300 mS 2706-F11JC 250 characters 350 mS 2706-F21J 250 characters 300 mS 2706-F21JC 250 characters 350 mS

Note: Typical inter-packet delay requirements for most applications range from 80 to 250 milliseconds.

5–7

Chapter 5

Serial Communications

Duplex Protocol

Field 1

1 Byte

Control

Byte

Duplex Communications- In this Protocol, the DL50 provides a response to each command it receives. The response includes data checking bytes (Checksum) and a handshake byte (ACK/NAK). The DL50 receives message packets from the master device, transmits data checksum/handshake bytes back to the master, and uses the message data to display text.

Note: Use Simplex Protocol when the commands are sent from Allen-Bradley Dataliner DL20 and DL40 message displays, or from other master devices that do not support duplex communication. The Simplex Protocol section starts on page 5-2.

           

Field 2

ASCII Text or

Special Control

Characters

1-250 Bytes

Field 3

Slave Address

1 Byte

Field 4

Line Number

1 Byte

Field 5

Carriage Return

1 Byte

Field 6

Message

Attributes

3 Bytes

Field 7

Checksum (Dipswitch

Enabled)

3 Bytes

Field 1: Control Byte

This field indicates whether the text is to be buffered or displayed when it is received. The following control characters are used:

Table 5.G Control Characters in Duplex Protocol

Control Character

Ctrl-A 1 Append the characters to buffer. Field 6 is not sent. Ctrl-B 2 Append characters to buffer then display. Ctrl-C 3 Clear display line(s). Field 2 is not sent. Ctrl-D 4 Abandon running message. Reset buffer.

Ctrl-L 12 Initialize DL50 for Bootstrap.

Decimal

Value

Function

Note:           

If the control byte is Ctrl-A (decimal 1), the Message Attributes (field 6) is not sent because this packet does not cause the DL50 to display text. When Ctrl-B (decimal 2) is sent with a message attributes field, the message is sent to the message buffer and then displayed. Text which was previously sent to the buffer using Ctrl-A message packets is displayed with the message attributes contained in the Ctrl-B message packet.

A control byte containing Ctrl-D (decimal 4) provides a means of interrupting the DL50 display. This provides the host with the ability to display a messages with a higher priority than the message currently being displayed.

5–8

Chapter 5

)

Serial Communications

Duplex Protocol (continued

A control byte containing Ctrl-L (decimal 12) indicates that the DL50 is being initialized for the bootstrap mode. In this mode the DL50 will be idle, waiting for the host to transmit a firmware update (refer to Chapter 7).

Field 2: ASCII Text or Special Control Characters

This field contains the ASCII characters (up to 250) that are to be displayed by the DL50 or sent to the message buffer. The special control characters are described on page 5Ć11.

Field 3: Slave Address

The slave address is a single byte field that can be any value from 1 to 255, except for addresses

A display with an address of 255 will accept all message packets regardless of the address. In addition, any message packet with an address of 255 will be received by all displays.

Note: Displays and messages with an address of 255 will not have a response packet. This is to prevent multiple devices from trying to transmit simultaneously on a half-duplex RS-485 network.

6, 13, 16, and 18.

Field 4: Line Number

The line number performs one of two functions.

• Indicates where text is displayed.

• Indicates which lines to clear. Refer to the following table:

Line Number

Field 4

(Decimal)

1 Clear line 1 or display text on line 1. 2 Clear line 2 or display text on line 2. 3 Reserved for future use. 4 Reserved for future use.

50 Clear all lines.

Function

Note: The line number and other attributes as defined in the Message Attributes byte (field 6) determine how the message is displayed.

Field 5: Carriage Return

This is a Ctrl M (decimal 13) character.

5–9

Chapter 5

)

Serial Communications

Duplex Protocol (continued

Field 6: Message Attributes

This three byte field specifies how a message is displayed. The three bytes specify:

Byte 1

Display Mode

Display Speed

Display Mode / Speed The first byte of the Message Attributes field specifies display mode / display speed. The first five bits indicate display mode and the last three bits indicate the display speed.

Bit7Bit6Bit5Bit4Bit3Bit2Bit1Bit

Always Set to 1

Table 5.H Bits 0 through 4 of the Message Attribute 1st Byte

Function➀ Bits 4 z 0 Decimal Value➁

Roll Up 0 0 0 0 1 1

Roll Down 0 0 0 1 0 2

Roll Left 0 0 0 1 1 3

Roll Right 0 0 1 0 0 4

Roll In 0 0 1 0 1 5

Roll Out 0 0 1 1 0 6

Rotate 0 0 1 1 1 7

Wipe Up 0 1 0 0 0 8

Wipe Down 0 1 0 0 1 9

Wipe Left 0 1 0 1 0 10

Wipe Right 0 1 0 1 1 11

Wipe In 0 1 1 0 0 12

Wipe Out 0 1 1 0 1 13

Twinkle 0 1 1 1 0 14 Sparkle 0 1 1 1 1 15

Snow 1 0 0 0 0 16

Interlock 1 0 0 0 1 17

Switch 1 0 0 1 0 18

Slide Across 1 0 0 1 1 19

Spray On 1 0 1 0 0 20

Starburst On 1 0 1 0 1 21

Scroll 1 0 1 1 0 22

Reserved

➀ Refer to Appendix A for descriptions of these attributes. ➁ Add decimal values for all bits within a byte to determine value of the entire byte.

Display Speed Display Mode

Set Bits 5 and 6 using Table 5.D

Hold 0 0 0 0 0 0

Byte 2 Byte 3

Text Height

Relay Control

Reserved

Set Bits 0 through 4 using Table 5.H

1 0 1 1 1 ! 1 1 1 1 23 ! 31

5–10

Chapter 5

)

Serial Communications

Duplex Protocol (continued

Field 6: Message Attributes (continued) Special Control Characters

When operating in the slave mode, the DL50 will recognize the following special control characters:

• Ctrl F [FLASH]

For Example: Assume that the character ^ denotes a Ctrl-F. If the following message is sent:

This is a message with ^FLASHING TEXT^ along with non-flashing text.

• Ctrl R [RESET]

• Ctrl X [RED]

• Ctrl Y [AMBER (YELLOW)]

• Ctrl Z [GREEN]

5–11

Chapter 5

)

Serial Communications

Duplex Protocol (continued

Field 6: Message Attributes (continued)

Table 5.I Bits 5 through 7 of the Message Attribute 1st Byte

Function

Fastest Display 1 0 0 128

Fast Display 1 0 1 160

Slow Display 1 1 0 192

Slowest Display 1 1 1 224

➀ Bit 7 is always set to 1. ➁ Add decimal values for all bits within a byte to determine value of the entire byte.

Text Height / Relay Control- The second byte of the Message Attributes field specifies the text height and relay operation. The first three bits are reserved for future use. The third and fourth bits specify the text height. The sixth bit is reserved, the seventh bit controls the operation of the relay, and the eighth bit is always set to one.

Bit7Bit

Bit5Bit4Bit3Bit2Bit1Bit

Bits 7  5 ➀ Decimal Value ➁

Always Set To 1

Relay Operation

0 = Relay Off 1 = Relay On

Reserved Set to 0

Text Height

Set Bits 3 and 4

using Table 5.E

Table 5.J Bits 3 and 4 of the Message Attribute 2nd Byte

Text Height

2.1 Inch (53.3mm) Text 0 0 0

4.8 Inch (12 1.9 mm) Text 0 1 8 Reserved 1 0 16 Reserved 1 1 24

➀ Add decimal values for all bits within a byte to determine value of the entire byte.

Bits 4  3 Decimal Value ➀

Note: Bit 6 of message attribute 2nd byte:

Relay On = decimal value of 64 Relay Off = decimal value of 0

Bit 7 of message attribute 2nd byte always = decimal value of 128

5–12

Chapter 5

)

Serial Communications

Duplex Protocol (continued

Field 6: Message Attributes (continued)

Third Byte Message Attributes- The third byte of the Message Attributes field is reserved for future enhancements. Always set the eighth bit to 1 so that the field is not misinterpreted as a control character:

Bit7Bit6Bit5Bit4Bit3Bit2Bit1Bit

Always Set To 1

Reserved

Field 7: Checksum

       

Byte 1

Checksum

Dummy Byte

1 Byte

Byte 2

Checksum MSB

1 Byte

Byte 3

Checksum LSB

1 Byte

If either the Checksum Most Significant Byte (MSB) or Checksum Least Significant Byte (LSB) contain a value equivalent to a CR (decimal 13), the content of the dummy byte is adjusted to alter the value of the Checksum bytes. Refer to Appendix F for a description of how the checksum bytes are calculated.

Important: To disable the checksum, set the DL50 DIP switch S2 position 8 to Off (refer to Figure 3.2). With the checksum disabled, your host duplex messages must still contain 3 bytes in Field 7, but the checksum value is ignored by the DL50.

5–13

Chapter 5

)

Serial Communications

Duplex Protocol (continued

Response From the DL50

To every command the DL50 successfully receives, the DL50 will provide a response. The response packet has the following format

Field 1

ACK or NAK

1 Byte

Field 2

Status Byte

1 Byte

Field 3

Checksum

3 Bytes



1. If the DL50 Display successfully received the message packet, and is ready to process it, the DL50 sends an acknowledge response (ACK 6 decimal). In this case, the contents of the status byte are irrelevant.

2. If the DL50 successfully received the message packet but is not able to display it, a negative acknowledge response (NAK 21 decimal) is sent. This indicates one of the following:

• A Display FAULT has been detected, or

• Display is in the BUSY state.

A NAK will be accompanied by a status byte with the bits set as defined here:

Bit Number Meaning

0 0 = No Fault; 1 = Fault Detected 1 0 = Normal; 1 = Display is Busy 2 Unused 3 Unused 4 Unused 5 Unused 6 Unused 7 Always 1

5–14

3. If no response is sent from the DL50, it indicates one of the following:

• The message was not received

• CHECKSUM error was detected

• DL50 address is set to 255

• Message address is 255.

Both ACK and NAK responses are also accompanied by a three byte Checksum. The first byte (dummy byte) is normally 0 and is only used when either or both checksum bytes contain a value equivalent to a Carriage Return. Refer to Appendix F for a description of how the checksum bytes are calculated.

Note: If a DL50 has an address of 255, or if a DL50 receives a message with an address of 255, it does not send a response. This is to prevent multiple devices from trying to transmit simultaneously on the half-duplex RS-485 network.

Chapter

Chapter Objectives

Slave Mode Operation

A–B

Slave Mode Operation / Examples

This chapter describes how to operate the DL50 in the slave mode. The slave mode is the normal operating mode of the DL50. In order to show the operation of the DL50, this chapter contains example messages and host programs.

To operate the DL50 in the slave mode, perform the following steps:

1. Install the DL50 as described in Chapter 4.

2. Configure the DL50 using the configuration DIP switches as shown in Figure 3.2. You can configure the DL50 using the DIP switches before or after installation. Make sure you press the reset button (or cycle power) if power is applied before you configure the DL50. This will load the DIP switch settings into the DL50’s memory. Refer to Figure 2.2 for the location of the reset button.

Example Messages

3. Depending upon the protocol selected using the DIP switches (Simplex or Duplex), send message packets which are in the format described in Chapter 5.

4. If you are using Duplex Protocol, the host device will receive an ACK (decimal 6) or NAK (decimal 21) response from the DL50. Refer to description of DL50 response format in NO TAG. The host should re-transmit the message if a NAK is received.

The following are example message packets that could be transmitted to a DL50. The function(s) of each command is provided.

6–1

Chapter 6

Slave Mode Operation / Examples

Example 1 (Simplex Protocol)

Command Function: Display message shown below on all DL50 message displays with an address of 42.

PRESSURE LOW

The command specifies a Roll up display mode The host would need to send the following data (Simplex Protocol):

Message Text

Field 2 ASCII Text

(Decimal 77)

1 of 12 bytes

Field 2 ASCII Text

(Decimal 82)

2 of 12 bytes 3 of 12 bytes 4 of 12 bytes 5 of 12 bytes 6 of 12 bytes

Field 2 ASCII Text

(Decimal 69)S(Decimal 83)S(Decimal 83)

Field 2 ASCII Text

(Decimal 85)

Message Text

Field 2 ASCII Text

(Decimal 82)E(Decimal 69)

7 of 12 bytes

Roll Up Message Slave Address 42 Line #1

Field 3 Display Mode

Ctrl-D

(Decimal 4)

1 of 3 bytes

Field 2 ASCII Text

SPACE

(Decimal 32)L(Decimal 76)O(Decimal 79)

8 of 12 bytes 9 of 12 bytes

Field 4 Slave Address

Decimal

2 of 3 bytes 3 of 3 bytes

Field 5 Line Number

Decimal

Field 2 ASCII Text

(Decimal 87)

10 of 12 bytes 1 1 of 12 bytes 12 of 12 bytes

End Message

Field 6 Carriage Return

(Decimal 13)

1 byte

A simple BASIC program for a host PC to send the message would be:

100: Print #1, “PRESSURE LOW” + CHR$(4) + CHR$(42) + CHR$(1) + CHR$(13)

6–2

Chapter 6

Slave Mode Operation / Examples

Example 2 (Duplex Protocol)

Command Function: Display message shown below on all DL50 message displays.

Motor ON

The command specifies message attributes of roll in display mode, fast display speed, 4.8 inch text, and annunciation relay on.

Address 255 specifies that the message is displayed on all DL50s. The host would need to send the following data (Duplex Protocol):

Append & Display

Message

Field 1 Control Byte

Ctrl-B

(Decimal 2)

1 byte

Field 2 ASCII Text

(Decimal 77)

1 of 8 bytes 2 of 8 bytes 3 of 8 bytes 4 of 8 bytes 5 of 8 bytes

Field 2 ASCII Text

(Decimal 111)t(Decimal 116)o(Decimal 111)

Field 2 ASCII Text

SPACE

(Decimal 32)O(Decimal 79)

6 of 8 bytes

7 of 8 bytes 8 of 8 bytes

(Decimal 78)

Message Text

Field 2 ASCII Text

Message Text

Field 3 Slave Address

255

Decimal

1 byte 1 byte

Field 2 ASCII Text

Field 4 Line Number

Decimal

Field 2 ASCII Text

(Decimal 114)

Field 5 Carriage Return

(Decimal 13)

1 byte

Fast Display,

Roll in

Field 6 Message Attributes

165

Decimal

1 of 3 bytes

Relay On

4.5 Inch text

Field 6 Message Attributes

200

Decimal

2 of 3 bytes 3 of 3 bytes

Always Set

to 128

Field 6 Message Attributes

128

Decimal

Field 7 Checksum

Decimal

Checksum Bytes

Field 7 Checksum

Decimal

2 of 3 bytes 3 of 3 bytes1 of 3 bytes

Field 7 Checksum

202

Decimal

A simple BASIC program for a host PC to send the message would be:

100: Print #1, CHR$(2) + “Motor ON” + CHR$(255) + CHR$(1) + CHR$(13) + CHR$(165) +

HR$(200) + CHR$(128) + CHR$(0) + CHR$(05) + CHR$(202)

Note: Refer to Appendix F for checksum calculations.

6–3

Chapter 6

Slave Mode Operation / Examples

Example 3 (Relay On)

Command Function: Energize annunciation relay on DL50 with an

address of 150.

The host would need to send the following data (Simplex Protocol):

Address

Field 4 Slave Address

150

Decimal

Relay On End Message

Field 5 Line Number

Field 6 Carriage Return

Decimal

1 byte1 byte1 byte

(Decimal 13)

A simple BASIC program for a host PC to send the message would be:

100: Print #1, CHR$(150) + CHR$(48) + CHR$(13)

Example 4 (Relay Off)

Command Function: De-energize annunciation relay on DL50 with an

address of 150.

The host would need to send the following data (Simplex Protocol):

Address

Field 4 Slave Address

150

Decimal

Relay Off End Message

Field 5 Line Number

Field 6 Carriage Return

Decimal

(Decimal 13)

1 byte1 byte1 byte

6–4

A simple BASIC program for a host PC to send the message would be:

100: Print #1, CHR$(150) + CHR$(49) + CHR$(13)

Field 2 ASCII Text

(Decimal 83)e(Decimal 101)

1 of 42 bytes

2 of 42 bytes 3 of 42 bytes 4 of 42 bytes 5 of 42 bytes

Example 5 (Send 2-Line Message)

Command Function: Display message as shown below on lines 1 and 2 of all

DL50s using the line number field value of 30.

The command is written for a Catalog No. 2706-F11J or -F11JC display. Address 127 specifies that the message is displayed on all DL50s. The word “NOT” in the message will flash. The host would need to send the following data (Simplex Protocol):

Message Text

Field 2 ASCII Text

(Decimal 113)u(Decimal 117)e(Decimal 101)

Field 2 ASCII Text

Chapter 6

Slave Mode Operation / Examples

Sequenc Err or ROBOTeNOT POSI T:IONED

Field 2 ASCII Text

(Decimal 110)

6 of 42 bytes

Field 2 ASCII Text

(Decimal 99)e(Decimal 101)

7 of 42 bytes 8 of 42 bytes

Field 2 ASCII Text

SPACE

(Decimal 32)

9 of 42 bytes

Message Text

Field 2 ASCII Text

(Decimal 69)r(Decimal 114)

10 of 42 bytes 11 of 42 bytes 12 of 42 bytes 13 of 42 bytes 14 of 42 bytes 15 of 42 bytes 16 of 42 bytes 17 of 42 bytes 18 of 42 bytes

Field 2 ASCII Text

SPACE

(Decimal 32)

19 of 42 bytes 20 of 42 bytes 21 of 42 bytes 22 of 42 bytes 23 of 42 bytes 24 of 42 bytes 25 of 42 bytes 26 of 42 bytes 27 of 42 bytes

Field 2 ASCII Text

SPACE

(Decimal 32)

Field 2 ASCII Text

(Decimal 78)O(Decimal 79)

28 of 42 bytes 29 of 42 bytes 30 of 42 bytes 31 of 42 bytes 32 of 42 bytes 33 of 42 bytes 34 of 42 bytes 35 of 42 bytes

Field 2 ASCII Text

(Decimal 84)

37 of 42 bytes 38 of 42 bytes 39 of 42 bytes 40 of 42 bytes 41 of 42 bytes 42 of 42 bytes 1 byte 1 byte

Field 2 ASCII Text

(Decimal 73)O(Decimal 79)

Field 2 ASCII Text

(Decimal 114)

Field 2 ASCII Text

(Decimal 82)

Field 2 ASCII Text

(Decimal 84)

Message Text

Field 2 ASCII Text

(Decimal 111)r(Decimal 114)

Message Text

Field 2 ASCII Text

(Decimal 79)B(Decimal 66)

Message Text

Field 2 ASCII Text

Flash Off

(Decimal 6)

Field 2 ASCII Text

(Decimal 78)

Field 2 ASCII Text

SPACE

(Decimal 32)

Field 2 ASCII Text

(Decimal 69)D(Decimal 68)

Field 2 ASCII Text

(Decimal 58)

Field 2 ASCII Text

(Decimal 79)T(Decimal 84)

Field 2 ASCII Text

(Decimal 80)

Field 2 ASCII Text

SPACE

(Decimal 32)

Field 2 ASCII Text

(Decimal 79)S(Decimal 83)I(Decimal 73)

Simplex

All Slaves

Field 4 Slave Address

127

Decimal

1 byte

Field 2 ASCII Text

SPACE

(Decimal 32)

Field 2 ASCII Text

SPACE

(Decimal 32)

Field 2 ASCII Text

Line Number 30

Field 5 Line Number

Decimal

Field 2 ASCII Text

SPACE

(Decimal 32)

Field 2 ASCII Text

Flash On

(Decimal 6)

Field 2 ASCII Text

36 of 42 bytes

Field 6 Carriage Return

(Decimal 13)

A simple BASIC program for a host PC to send the message would be:

100: L1$ = “Sequence Error: (5 Spaces)” 110: L2$ = “ROBOT ” + CHR$(6) + “NOT” + CHR$(6) + “POSITIONED” 120: Print #1, L1$ + L2$ + CHR$(127) + CHR$(30) + CHR$(13)

6–5

Chapter 6

Slave Mode Operation / Examples

Programming Examples

The following are examples showing how some of the most common hosts would be programmed to send messages to a slave DL50.

Using the DL50 to Display Messages from a DL20

Chapter 4 illustrates the connections between the DL50 and a DL20 Series Dataliner.

Note: You must set the DL50 for Simplex protocol when communicating with a DL20.

The position and size of the characters displayed on the DL50 is determined by:

• Number of lines available on the master DL20

• Message attributes

When programming DL20 messages for a DL50, refer to the following charts and suggestions.

Catalog No. 2706-F11J, -F11JC

DL20 Display Type

1, 2, or 4 Line ➀

2.1 Inch (53.3 mm) Characters

2 Lines Available

2 Line

4.8 Inch (121.9 mm) Characters

1 Line Available

1 Line ➁ 4 Line ➁

Auto Select

One or Two Lines

Available

6–6

Catalog No. 2706-F21J, -F21JC

2.1 Inch (53.3 mm) Characters

2 Lines Available

DL20 Display Type

1, 2, or 4 Line ➀

➀Number of DL20 lines required to use all of the characters on each line of the DL50. ➁The DL50 will Roll the 20 characters from right to left, 10 (4.8 inch) characters at a time.

4 Line 1 Line 4 Line

4.8 Inch (121.9 mm) Characters

1 Line Available

One or Two Lines

Auto Select

Available

DL20 Message Type

Chapter 6

Slave Mode Operation / Examples

Table 6.A Application Hints for using a DL20 as host

Displaying 2.1 Inch (53.3 mm) Characters

How Message Appears On DL50 DL50/DL20 Application Notes

“Line 1 Only”or “Line 2 Only” message  20 characters on the DL20

“Line 1 Only”or “Line 2 Only” message > 20 characters on the DL20

“All Lines” message on a 4 line DL20. Do not send message to a DL50 in Auto-Select mode.

Scrolling message on a DL20.

Flashing message on a DL20.

➀ Uses the 20 characters on the left half of Catalog No. 2706-F21J, -F21JC.

DL20 Message Type

“Line 1 Only” message  20 characters on the DL20.

“Line 1 Only” message > 20 characters on the DL20.

“All Lines” message on a 4 line DL20. “All Lines” message on a 2 line DL20. Do not send message to a DL50 in large text mode.

Scrolling message on a DL20.

Flashing message on a DL20.

Message appears as a Line 1 or Line 2 message on the DL50 with up to 20 characters.➀

Message appears as a Line 1 or Line 2 message on the DL50 in segments of up to 20 characters each.➀

Also scrolls on a DL50, but the scroll rate is slower than the DL20 wait time (in .1 seconds).

Also flashes on a DL50. A scrolling message is not displayed as flashing

Displaying 4.8 Inch (121.9 mm) Characters

How Message Appears On DL50 DL50/DL20 Application Notes

Message appears on DL50 with up to 20 characters.➁ Message appears as a Line 1 or Line 2 message on the DL50

in segments of up to 20 characters each.➁ For Catalog No. 2706-F11J, wait time = 4 is recommended.

Do not send message to a DL50 in Auto-Select or large text mode.

Catalog No. 2706-F21J: Also scrolls, but the scroll rate is slower than the DL20 wait time (in .1 seconds). Catalog No. 2706-F11J: Do not use the DL20 scroll mode attribute.➁

Also flashes on a DL50. A message with the scroll attribute set will not be displayed as flashing.

DL50: 2.1 Inch characters or auto-select. DL20: Line used attribute.

DL50: 2.1 Inch characters or auto-select DL20: Line used attribute.

DL50: 2.1 Inch characters. DL20: Line used attribute.

DL50: Scroll message. DL20: Scroll message and wait time attributes.

DL50: Flash messages. DL20: Flash attribute and scroll message attribute.

DL50: 4.8 Inch characters. DL20: Line used attribute, wait time attribute.

DL50: 4.8 Inch characters, auto-select mode. DL20: Line used attribute, wait time attribute.

2.1 inch characters only, see above.

DL50: Scroll message. DL20: Scroll message and wait time attributes.

DL50: Flash messages. DL20: Flash attribute and scroll message attribute.

➁ Catalog No. 2706-F11J, -F11JC scrolls 20 character segments from right to left, 10 characters at a time.

6–7

Chapter 6

Slave Mode Operation / Examples

Using the DL50 to Display Messages from a DL40

The DL50 can receive message data from a Bulletin 2706 DL40 Series Dataliner. Chapter 4 illustrates the connections.

Note: You must set the DL50 for Simplex protocol when communicating with a DL40.

The position and size of the characters displayed on the DL50 is determined by:

• Number of lines available on the master DL40

• Message attributes

When programming DL40 messages for a DL50, refer to the following charts and suggestions.

Catalog No. 2706-F11J, -F11JC

DL40 Display Type

2 or 4 Line➀

2.1 Inch

Characters

2 Lines Available

2 Line

4.8 Inch

Characters

1 Line Available

2 Line➁ 4 Line➁

One or Two Lines

Auto Select

Available

Catalog No. 2706-F21J, -F21JC

2.1 Inch

Characters

2 Lines Available

DL40 Display Type

2 or 4 Line➀

➀Number of DL40 lines required to use all of the characters on each line of the DL50. ➁The DL50 will scroll the 20 characters from right to left, 10 (4.8 inch) characters at a time, unless the

DL40 slave message-length attribute is set to 10 characters.

4 Line

4.8 Inch

Characters

1 Line Available

2 Line➁ 4 Line➁

One or Two Lines

Auto Select

Available

6–8

DL40 Message Type

Chapter 6

Slave Mode Operation / Examples

Table 6.B DL40 Application Hints for using a DL40 as host

Displaying 2.1 Inch (53.3 mm) Characters

How Message Appears On DL50 DL50/DL40 Application Notes

“Line 1 Only”or “Line 2 Only” message  20 characters on the DL40

“Line 1 Only”or “Line 2 Only” message > 20 characters on the DL40

“All Lines” message on the DL40.

Scrolling message on a DL40.

DL40 message contains characters that blink.

Energize slave (DL50) relay.

Control DL50 Tri-Color Display Colors Each message can be Red, Green or Amber.

➀Uses the 20 characters on the left half of Catalog No. 2706-F21J, -F21JC.

DL40 Message Type

“Line 1 Only” message  20 characters on the DL40.

“Line 1 Only” message > 20 characters on the DL40.

“All Lines” message on a 2 or 4 line DL40.

Scrolling message on a DL40.

DL40 message contains characters that blink. The same characters will blink on a DL50.

Energize slave (DL50) relay.

Control DL50 Tri-Color Display Colors Each message can be Red, Green or Amber.

Message appears as a Line 1 or Line 2 message on the DL50 with up to 20 characters.➀

Appears as a Line 1 or Line 2 message on the DL50 in segments of up to 20 characters each.➀

Do not send message to a DL50 in Auto-Select mode.

Also scrolls on a DL50, but the scroll rate is slower than the DL40 wait time (in 0.1 seconds).

The same characters will blink on a DL50. It is possible to scroll a message with blinking characters.

DL50 relay is energized until another message is received with the slave relay attribute set to off.

Displaying 4.8 Inch (121.9 mm) Characters

How Message Appears On DL50 DL50/DL40 Application Notes

Message appears on DL50 with up to 20 characters.➁

Appears as a Line 1 or Line 2 message on the DL50 in segments of up to 20 characters each.➁ For Catalog No. 2706-F11J, wait time = 4 is recommended.

Do not send message to a DL50 in Auto-Select mode.

Catalog No. 2706-F21J: Also scrolls, but the scroll rate is slower than the DL40 wait time (in .1 seconds).

Catalog No. 2706-F11J: Do not use the DL40 scroll mode attribute.➁

DL50 relay is energized until another message is received with the slave relay attribute set to off.

DL50: 2.1 Inch characters or Auto-Select. DL40: Line Used Attribute.

DL50: 2.1 Inch characters DL40: 2 or 4 line displays.

DL50: Scroll message. DL40: Scroll message and wait time attributes.

DL50: Blinking characters. DL40: Blinking (<CTRL>B) characters in message and scrolling messages.

DL 50: Turn on relay. DL40: Energize slave relay attribute.

DL40: Set slave Message Color attribute.. DL50: Displays red, green, or amber text.

DL50: 4.8 Inch characters. DL40: Line Used Attribute, Wait Time Attribute

DL50: 2.1 inch characters DL40: 2 or 4 line displays

DL50: Scroll message DL40: Scroll message and wait time attributes.

DL50: Flash messages DL40: “Flash” attribute and scroll message attribute.

DL 50: Turn on relay. DL40: Energize slave relay attribute.

DL40: Set slave Message Color attribute. DL50: Displays red, green, or amber text.

➁Catalog No. 2706-F11J, -F11JC scrolls 20 character segments from right to left, 10 characters at a time.

6–9

Chapter 6

Slave Mode Operation / Examples

Updating Embedded Variables from a DL20 or DL40

Use the following guidelines when updating embedded variable data in DL50 messages from a DL20 or DL40 Dataliner.

• For a DL20, update variables using a sequencer to strobe the high and low

bytes of each variable as well as the message number (as described in DL20 User Manual). A baud rate of 9600 is recommended.

• For a DL40, a baud rate of 9600 is recommended. You may update

variable data sent to the DL40 as frequently as the PLC scan permits, but you must have the DL40’s message wait time set for more than 1 second. With a 1 second wait time, you may set the DL40 auto repeat attribute to YES.

Note: DO NOT set the DL40 wait time to 0 and the auto repeat attribute to YES for any messages sent to the DL50 by either the DL20 or DL40.

IMPORTANT:

If you are using a DL20 or DL40 to send messages to a DL50 at a baud rate of 19.2K, we suggest that the updates of embedded variable data be sent in intervals longer than the typical program scan times. You can accomplish this by using the logic program (next page) in a PLC-5:

6–10

Rung 2:0

gur





Chapter 6

Slave Mode Operation / Examples

e 6.1

PLC-5 Embedded Variable Wait Time Adjustment

+TON TIMER ON DELAY

Timer T4:0 Time base 0.01 Preset See table below Accum 3

EN DN

Rung 2:1



Rung 2:2



Rung 2:3



Rung 2:4







  

+TON TIMER ON DELAY

Timer T4:1 Time base 0.01 Preset 1000 Accum 256

+MOV MOVE

Source 1000 Dest 0:010

+MOV MOVE

Source T4:1.ACC



Dest 0:011

+MOV MOVE

Source 0 Dest 0:010

EN DN

1000

256 253

1000

Catalog No. / Character Height

Catalog No. 2706-F11J, -F11JC

4.8 Inch (121.9 mm) Text Catalog No. 270-F11J, -F11JC ➀

2.1 Inch (53.3 mm) Text Catalog No. 2706-F21J, -F21JC ➁

4.8 Inch (121.9 mm) Text Catalog No. 2706-F21J, -F21JC

2.1 Inch (53.3 mm) Text

➀ Baud Rate u 9600 ➁ Baud Rate w 9600

   

Preset Value for TON T4:0

400

Allows 20 characters to scroll







Wait Time of DL40 Auto Repeat Message

 

 

6–11

Chapter 6

Slave Mode Operation / Examples

DL50 BASIC Alarm Programming Example

This example is for Catalog No. 2706-F11J, -F11JC. Use it as a guide in creating your own alarm programs. The program determines which alarm(s) are current and the priority in which they are displayed. The program is compatible with Microsoft QuickBasic and IBM GW BASIC / BASIC A.

Here is a quick summary of the program: Lines 5 to 10 initialize the computer communications port for the DL50.

Lines 100 and 120 send the alarm message to the DL50. Lines 1005 to 2000 define the messages. Lines 4000 to 6000 determine current alarms and priority. Lines 9000 to 9200 provide a menu of the available test messages.

Program:

5 REM LINE 10 PREPARES SERIAL PORT ’COM1’ TO SEND MESSAGES TO THE DL50 6 REM WITH BAUD RA TE = 9600 10 OPEN “com1:9600,n,8,1,cs,ds,cd”FOR RANDOM AS #1 20 REM THE USER INSERTS

30 OTHER ’INITIALIZATION’ CODE HERE 35 THE PROGRAM DOES A ’GOSUB’ TO LINES 4000-6000 TO EVALUATE IF ANY 36 ALARMS ARE CURRENT AND WHICH WOULD GET PRIORITY TO BE DISPLAYED. 40 GOSUB 4000

97 REM LINE 100 DETERMINES WHICH OTHER ’GOSUB’ LINE WILL DEFINE WHAT NEEDS 98 REM TO BE SENT TO THE DL50 99 REM ALARM= 1 2 3 4 5 6 7 8 100 ON ALARM GOSUB 1005, 1010, 1015, 1020, 1025, 1030, 1035, 2000 120 PRINT #1, M$ ; CHR$ (ADDRESS) ; CHR$(LN) ; CHR$(13) 130 GOTO 35

998 REM LINES 1005-2000 DEFINE THE MESSAGES TO BE SENT TO THE DL50 999 REM SPACING, LINE CHOICE (AND SOMETIMES CHARACTER HEIGHT), ADDRESSING 1000 AND BLINKING CHARACTERS ARE ALL DETERMINED HERE 1001 REM 1002 REM M$, THE ADDRESS, AND LINE NUMBER ARE SENT TO THE DL50 AFTER 1003 REM THE “RETURN” 1004 REM

1005 LN=1: ADDRESS = 1: M$ = “TEST ALARM #1” 1006 RETURN 1010 LN=2: ADDRESS = 1: M$ = “TEST ALARM #2” 1011 RETURN 1015 LN=3: ADDRESS = 1: M$ = “TEST ALARM #3” 1016 RETURN 1020 LN=3O: ADDRESS = 1: M$ = “ THIS IS A TWO-LINE TEST ALARM #4 ” 1021 RETURN

6–12

(Program continued on next page)

Chapter 6

Slave Mode Operation / Examples

1025 LN=48: ADDRESS = 1: M$ = ’’ ’’: REM THIS TURNS ON THE DL50‘s RELA Y 1026 RETURN

1030 LN=49: ADDRESS = 127: M$ = ’’ ’’: REM THIS TURNS OFF THE DL50‘s RELAY 1031 RETURN 1035 LN=50: ADDRESS = 127: M$ = ’’ ’’: REM THIS CLEARS THe DL50 DISPLAY 1036 RETURN 2000 RETURN

4000 REM LINE 4000-6000 DETERMINE IF ANY ALARMS ARE CURRENT AND WHICH 4001 REM ONE HAS PRIORITY 4002 REM 4030 INPUT “Alarm No.”; ALARM: REM ###THIS IS FOR PROGRAM TEST ONLY### 4040 IF ALARM=0 THEN END: REM ###THIS LINE IS FOR PROGRAM TEST ONLY###

4050 REM THE USER PLACES LINES OF CODE FOR ALARM HANDLING HERE 6000 RETURN 9000 REM DISPLAY THE MENU OF TEST MESSAGES 9001 REM ###THESE LINES FOR PROGRAM TEST ONLY### 9005 PRINT “ALARM # Sent to Line # Result at Dl50 (in Auto-Select Mode) 9006 PRINT “_______ ___________ ____________________________” 9110 PRINT “ 1 1 ’ TEST ALARM # 1 ’ ” 9115 PRINT “ 2 2 ’ TEST ALARM #2 ’ ” 9120 PRINT “ 3 3 ’ ALARM #3 ’ (Large Characters) ” 9125 PRINT “ 4 30 ’ THIS IS A TWO-LINE ’ (Lines 1 & 2) ” 9130 PRINT “ TEST ALARM #4 ’ ” 9135 PRINT “ 5 48 * THIS TURNS ON THE DL50) RELAY * ” 9140 PRINT “ 6 49 * THIS TURNS OFF THE DL50) RELAY * ” 9145 PRINT “ 7 30 * THIS CLEARS THE DL50) DISPLAY * ” 9150 PRINT “ 8 ** UNUSED ** ’ ” 9155 PRINT “ 9 ** REPEATS THIS MENU AGAIN ** ” 9160 PRINT “ 0 ** QUITS THE PROGRAM ** ” 9165 PRINT “ 9200 RETURN

Using the DL50 ALARM BASIC Program

After entering the program, the program will prompt to enter an alarm number. Press any key 0 through 7 and then the Return key. Refer to program lines 9000 through 9160 for a description of each alarm function. Press 0 and Return to exit the program.

Note: You can also use this program in a PLC/SLC BASIC Module with the changes described on the following page.

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Chapter 6

Slave Mode Operation / Examples

1771–DB BASIC Module Simplex Example

The following is an example of print statement using a BASIC Module (Catalog No. 1771-DB) as a host. The example assumes that the DL50 slave has an address of 1.

100: PRINT #“VALVE NUMBER 1 OPEN”,CHR(1),CHR(2),CHR(13)

Where: (1) specifies slave address 1

(2) specifies line 2 of the display (13) is equivalent to a Carriage Return (CR



After receiving this message, the DL50 will display:

VALVE NUMBER 1 OPEN

on the second line of the display. When using the BASIC module, you must use the print CHR (decimal equivalent character) function.

Note: The alarm program for BASIC on page 6-12 may also be used on the BASIC modules (Catalog No. 1771-DB or 1746-BAS) with the following changes and additions:

1 STRING 200,40 10 CALL 119 : REM SETS PERIPHERAL PORT TO DEFAULTS 99 REM N= 0 1 2 3 4 5 6 7 8 100 ON N GOSUB 2000, 1005, 1010, 1015, 1020, 1025, 1030, 1035, 2000 110 IF N=9 GOTO 35 120 PRINT # $(1), CHR(A), CHR (LN ), CHR (13) 4030 INPUT “Alarm No.” N: REM ###THIS IS FOR PROGRAM TEST ONLY### 4040 IF N=0 THEN END: REM ###THIS LINE IS FOR PROGRAM TEST ONLY###

6–14

On Lines 1005 t0 1035 change:

ADDRESS to A M$ to $(1)

Flexible Interface Module (Catalog No. 2760-RB)

Chapter 6

Slave Mode Operation / Examples

Flexible Interface Module Example

In this example, a PLC-5/15 is used to send a message through a Flexible Interface Module (Catalog No. 2760-RB) using RS-422 communications. The RS-422 communications port is compatible with the DL50 RS-485 port. Figure 6.2 illustrates the setup. The Simulator Module (Catalog No. 1771-SM) provides the external inputs, in your application this may be any of a variety of I/O modules.

Figure 6.2 Flexible Interface Module Example

RS-485 Protocol Cartridge (Catalog No. 2760-SFC2)

Simulator Module (Catalog No. 1771-SM)

R B M o d u l e t o D L 5 0

PLC-5/15

Flexible Interface Module Configuration: For this example, the Flexible Interface Module can use port 1, 2, or 3.

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Chapter 6

Slave Mode Operation / Examples

The selected port should be set as follows:

MODEM CONTROL (ENABLE/DISABLE) = DISABLE. 9600 BITS PER SECOND (YES/NO) = YES. 8 BITS NO PARITY (YES/NO) = YES. XON/XOFF (ENABLE/DISABLE) = DISABLE. RS422 (YES/NO) = YES. RECEIVE MATRIXING (ENABLE/DISABLE) = DISABLE. BYTE SWAPPING (ENABLE/DISABLE) = ENABLE. BINARY DA TA NO CONVERSIONS (YES/NO) = YES. HDR/TLR ON OUTPUT (ENABLE/DISABLE) = ENABLE. HEADER BYTE LENGTH (DEC 0 . . . 4) = 0. HEADER DATA [0] (HEX 0 . . .ff) = 0. HEADER DATA [1] (HEX 0 . . .ff) = 0. HEADER DATA [2] (HEX 0 . . .ff) = 0. HEADER DATA [3] (HEX 0 . . .ff) = 0 TRAILER BYTE LENGTH (DEC 0 . . .4) = 1. TRAILER DATA [0] (HEX 0 . . .ff) = 0. TRAILER DATA [1] (HEX 0 . . .ff) = d. TRAILER DATA [2] (HEX 0 . . .ff) = 0. TRAILER DATA [3] (HEX 0 . . .ff) = 0 MAX DATA BYTE LENGTH (DEC 0 . . . 124) = 0. MIN DATA BYTE LENGTH (DEC 0 . . . 124) = 0

The program consists of two rungs:

• Rung 0 initiates the block transfer of data to the Flexible Interface

Module. N7:00 is the data file with the DL50 message. In this example, I:2/0 is the input which triggers the message.

• Rung 1 reads command responses from the Flexible Interface Module.

You can delete this rung if the Flexible Interface Module is configured with handshake data disabled and the DL50 is set for Simplex Protocol.

Figure 6.3 Ladder Diagram: Flexible Interface Module Example

Rung 2:0

         

  

Rung 2:1

  

  

ONS



BTW BLOCK TRNSFR WRITE

Rack 00 Group 0 Module 0 Control Block N7:5 Data file N7:100 Length 0 Continuous N

BTW BLOCK TRNSFR READ

Rack 00 Group 0 Module 0 Control Block N7:0 Data file N7:200 Length 0 Continuous N

EN DN

6–16

This is what the data files look like:

1234

6789

Chapter 6

Slave Mode Operation / Examples

Addre N7:100 \00\26 \05\01 _R B_ Mo du le _t o_ DL

N7:110 50 _ _ \05\01

Byte Count (Including Words N7:100  N7:112) = 26

DL50 Line No. = 1

DL50 Address Byte = 5

Source (5) = Backplane Destination (01) = Port 1

Note: _ = Space

Note: If byte swapping is enabled, all data should end on a word boundary (must have even number byte count)

6–17

Chapter 6

Slave Mode Operation / Examples

PLC-5 Channel 0 Simplex Example

This example demonstrates how to use the RS232 Channel 0 of supporting members of the Allen-Bradley PLC-5 family to trigger a Dataliner DL50 display. In the example, a counter is used to simulate changing variable data, which could be a motor speed or a temperature. This will demonstrate how variable data may be incorporated into messages.

The program below will display the message “Temp ##” in green (red on F11J or F21J), where ## represents the sample variable. The text size will depend on the character size setting on the DL50 display.

Temp ##

Channel 0 Configuration

The first step is to configure the PLC channel 0 port to communicate with a DL50 slave. Table 6.C shows the user mode configuration of the PLC channel 0. Note that the baud rate should match that being used by the DL50.

Table 6.C Configuring the Channel 0 Port

Channel 0

Channel 1A Channel 1B

Channel 2A Channel 2B

Channel 3A

Diag.file: Remote mode change:

Mode Attention Char.: Baud rate:

Stop bits: Control line:

Echo/delete mode:

Termination 1: Termination 2:

Channel 0 Configuration

DISABLED

NO HANDSHAKING

User Mode

N11

\0x1b

9600

CRT

\0xd \0x0

USER

DH+

SCANNER MODE ADAPTER MODE SCANNER MODE

N/A

XON/XOFF: DISABLED System mode char.: S

User mode char.: U Parity: NONE

Bits per character: 8

RTS send delay (20 ms): 0 RTS off delay (20 ms): Append 1: \0xd

Append 2: 0

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Chapter 6

Slave Mode Operation / Examples

PLC String Variables

For this example, processor memory file #12 is set up as a string file which contains the parts needed to form a message packet for a DL50 in Simplex mode. Table 6.D has the variables for any Simplex mode communication, and Table 6.E shows the strings for this example.

Table 6.D Variables for Simplex Protocol and Their Functions

Memory

Location

ST12:0 MSG_SEND

ST12:1 VARIABLE

ST12:2 PRE_TEXT ST12:3 TEXT The message text

ST12:4 F3_F4_F5

Symbol Description

The message which is built by the PLC and is actually sent out to the DL50 through CH0

The converted integer sample variable being appended to the message

The simplex protocol control byte (Field 1) and color code (F11JC and F21JC only)

Fields 3, 4, and 5 of the simplex protocol Field 3 determines the display mode Field 4 determines the slave address Field 5 determines the line number These fields are followed by a \OD to produce a carriage return

The contents of these strings must be assigned using the off-line programming software (6200). Control code values are entered into the strings by using a forward slash followed by two hexadecimal digits. (See Appendix B, which has hexadecimal values for all ASCII and extended ASCII characters.)

Table 6.E Strings Representing Control Code Values for This Example

Address LEN STRING TEXT

ST12:0 15 \19Temp 36\03\7F\01\0D ST12:1

ST12:2

ST12:3 ST12:4

5 4

\02\19

Temp \01\7F\01\0D

Note: Messages and attributes are changed by changing the strings or by having the PLC append different pre-determined string numbers to the MSG_SEND string.

6–19

Chapter 6

Slave Mode Operation / Examples

Rung 2:0 A free running timer used to trigger a variable counter and create a delay for message timing. | T4:0 +TON–––––––––––––––+ | +––]/[–––––––––––––––––––––––––––––––––––––––––––––––+TIMER ON DELAY +–(EN)–+ | DN |Timer T4:0| | | |Time base 0.01+–(DN) | | |Preset 100| | | |Accum 28| | | +––––––––––––––––––+ | Rung 2:1 A counter is used to simulate a changing variable value. | T4:0 +CTU–––––––––––––––+ | +––] [–––––––––––––––––––––––––––––––––––––––––––––––+COUNT UP +–(CU)–+ | DN |Counter C5:0| | | |Preset 99+–(DN) | | |Accum 36| | | +––––––––––––––––––+ | Rung 2:2 Creation of output string for DL50. Message sending is initiated by discrete input I:001/00 and controlled by the delay timer. First the variable is converted from an integer to an ASCII string. (AIC) Next the output string is assembled from the separate parts. (ACN) Finally the output string is sent out to the DL50 through CH0. (AWT) | I:001 T4:0 +AIC–––––––––––––––––––––––––+ | +––] [–––] [––––––––––––––––––––––––––––––––––++INTEGER TO STRING CONVERSION++–+ | 00 DN ||Source C5:0.ACC|| | | || 36|| | | ||Destination VARIABLE|| | | |+––––––––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A PRE_TEXT|| | | | |Source B TEXT|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A MSG_SEND|| | | | |Source B VARIABLE|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A MSG_SEND|| | | | |Source B F3_F4_F5|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| |

Ladder Logic

The ladder logic builds a string from all the parts and sends it out to the DL50 via channel 0. Messages sent to the DL50 by the PLC must observe the required inter-message delays described in Table 5.F.

Note: Use a timer to avoid sending continuous messages.

Figure 6.4 Ladder Diagram: Channel 0 Simplex Example

6–20

Chapter 6

Slave Mode Operation / Examples

6–21

Chapter 6

Slave Mode Operation / Examples

PLC-5 Channel 0 Duplex Example

The following example demonstrates how to use the RS232 Channel 0 of supporting members of the Allen-Bradley PLC-5 family to trigger a DL50 Dataliner display, running in Duplex mode with checksum disabled. In this example a counter is used to simulate changing variable data, which could be a motor speed or a temperature. This will demonstrate how variable data can be incorporated into messages.

The program below will display the message “Speed ##” in 4.8-inch amber characters (red on F11J or F21J) in hold mode where ## represents the sample variable.

Speed ##

Channel 0 Configuration

The first step is to configure the PLC channel 0 port to communicate with a DL50 slave. Table 6.F shows the user mode configuration of the PLC. Note that the baud rate should match that being used by the DL50.

Table 6.F Configuring the Channel 0 Port

Channel 0

Channel 1A Channel 1B

Channel 2A Channel 2B

Channel 3A

Diag.file: Remote mode change:

Mode Attention Char.: Baud rate:

Stop bits: Control line:

Echo/delete mode:

Termination 1: Termination 2:

Channel 0 Configuration

NO HANDSHAKING

User Mode

N11

DISABLED

\0x1b

9600

CRT

\0xd \0x0

XON/XOFF: DISABLED System mode char.: S

User mode char.: U Parity: NONE

Bits per character: 8

RTS send delay (20 ms): 0 RTS off delay (20 ms): Append 1: \0xd

Append 2:

USER DH+

UNUSED UNUSED UNUSED

N/A

\0x0

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Chapter 6

Slave Mode Operation / Examples

PLC String Variables

For this example, processor memory file #12 is set up as a string file which contains the parts needed to form a message packet for a DL50 in Duplex mode. Table 6.G has the variables for any Duplex mode communication, and Table 6.H shows the strings for this example.

Table 6.G Variables for Duplex Protocol and Their Functions

Memory

Location

ST12:0 MSG_SEND

ST12:1 VARIABLE

ST12:2 PRE_TEXT ST12:3 TEXT The message text

ST12:4 F3_F4_F5

ST12:5 F6_B123

ST12:6 CHECKSUM

Symbol Description

The message which is built by the PLC and is actually sent out to the DL50 through CH0

The converted integer sample variable being appended to the message

The duplex protocol control byte (Field 1) and color code (F11JC and F21JC only)

Fields 3, 4, and 5 of the duplex protocol Field 3 determines the slave address Field 4 determines the line number Field 5 is \OD to produce a carriage return

The three bytes of field 6 of the duplex protocol. This dield controls the display mode, speed, and relay for each message. Use the Duplex Field 6 Worksheet to determine hex values for desired display operation.

Dummy checksum bytes appended to the end of the message. Their actual value is not important, since the checksum checking must be disabled on the DL50. (Note: These bytes MUST NOT equal 13 or 18 decimal.)

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Chapter 6

Slave Mode Operation / Examples

The contents of these strings must be assigned using the PLC off-line programming software (6200). Control code values are entered into the strings by using a forward slash followed by two hexadecimal digits. See Appendix B, which has hexadecimal values for all ASCII and extended ASCII characters.

Table 6.H Strings Representing Control Code Values for This Example

Address LEN STRING TEXT

ST12:0 19 \02\19Speed 25\FF\01\0D\80\88\80\00\00\00 ST12:1 2 25 ST12:2 2 \02\19 ST12:3 6 Speed ST12:4 3 \FF\01\0D ST12:5 3 \80\88\80 ST12:6 3 \00\00\00 Messages and attributes are changed by changing the strings or by having the

PLC append different pre-determined string numbers to the MSG_SEND string. The hex values for Field 6 can be calculated using the worksheet found in Appendix G.

Ladder Logic

Note: Use a timer to avoid sending continuous messages.

Table 6.I Ladder Diagram: Channel 0 Duplex Example

6–24

Chapter 6

Slave Mode Operation / Examples

Rung 2:2 Creation of output string for DL50. Message sending is initiated by discrete input I:001/00 and controlled by the delay timer. First the variable is converted from an integer to an ASCII string. (AIC) Next the output string is assembled from the separate parts. (ACN) Finally the output string is sent out to the DL50 through CH0. (AWT) | I:001 T4:0 +AIC–––––––––––––––––––––––––+ | +––] [–––] [––––––––––––––––––––––––––––––––––++INTEGER TO STRING CONVERSION++–+ | 00 DN ||Source C5:0.ACC|| | | || 25|| | | ||Destination VARIABLE|| | | |+––––––––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A PRE_TEXT|| | | | |Source B TEXT|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A MSG_SEND|| | | | |Source B VARIABLE|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A MSG_SEND|| | | | |Source B F3_F4_F5|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A MSG_SEND|| | | | |Source B F6_B123|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | | +ACN––––––––––––––––––––+| | | +–––––+STRING CONCATENATE ++ | | | |Source A MSG_SEND|| | | | |Source B CHECKSUM|| | | | |Destination MSG_SEND|| | | | +–––––––––––––––––––––––+| | | |+AWT––––––––––––––––––––+ | | | ++ASCII WRITE +–(EN)+ | | |Channel 0| | | |Source MSG_SEND+–(DN) | | |Control R6:0| | | |String length 0+–(ER) | | |Characters sent 19| | | +–––––––––––––––––––––––+ | Rung 2:3 The counter is reset when it is done. | C5:0 C5:0 | +––] [–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––(RES)–+ | DN | Rung 2:4 | | +––––––––––––––––––––––––––––––––[END OF FILE]–––––––––––––––––––––––––––––––––+ | |

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Chapter 6

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1746-BAS Duplex Example

The following example demonstrates how a 1746-BAS SLC Basic Module can be used to trigger messages on a DL50 display running in Duplex mode. This example prompts the user to enter a message along with its display attributes. The basic program calculates the control bytes, calculates the checksum of the packet, and sends the final packet out to the DL50 through its PRT2 serial port.

Port Setup

The MODE statement in line 10 sets the Basic Module’s port 2 to 9600 baud. If the DL50 is not set at 9600 baud, this statement must be changed to match the DL50 baud rate.

This Basic program can use either RS232 or RS485 communications. The Basic Module’s port type can be configured using the jumpers on the 1746-BAS module. Refer to the Basic Module Design and Integration Manual (Pub. #1746-ND005) for more information on the port configuration.

Program Variables

Table 6.J lists the variables which control the messages being sent to the DL50 by the Basic Module. These can be changed to obtain the desired message attributes.

First the message text is stored in string $(0) and the attribute strings are set to the desired values. Next the subroutine starting on line 5000 is called. This subroutine calculates the control bytes and the checksum, then sends the message out in the proper duplex packet form.

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Chapter 6

Slave Mode Operation / Examples

Table 6.J Duplex.BAS V ariables List

$(0) TEXT String Location of Message Text CTBT Control Byte

VALUE FUNCTION

1 Append to buffer 2 Append to buffer and display 3 Clear line(s). Send no F2. 4 Abandon running message and reset buffer

12 Initialize for bootstrap

DSPEED Display Speed

VALUE FUNCTION

0 Fastest 1 Fast 2 Slow 3 Slowest

HEIGHT Character Height

VALUE FUNCTION

0 2.1 inch 1 4.8 inch

LINO Line Number

VALUE FUNCTION

1 Line 1 2 Line 2

3, 4 Reserved

30 Clear all lines

MDE Display Mode

0-22 Decimal

RELAY Relay Status

VALUE FUNCTION

0Off 1On

CLR Color Code

VALUE COLOR

0 Red 1 Amber 2 Green

6–27

Chapter 6

Slave Mode Operation / Examples

1 REM DL50 DUPLEX FOR 1746-BAS 10 MODE(PRT2,9600,N,8,,,) 15 STRING 3000,254 20 CTBT = 2 :REM DEFAULT CONTROL BYTE 25 SLADD = 255 :REM DEFAULT SLAVE ADDRESS 30 TD = 10 :REM DEFAULT TIME DELAY 35 LINO = 1 :REM DEFAULT LINE NUMBER 40 DSPEED = 0 :REM DEFAULT DISPLAY SPEED 45 MDE = 0 :REM DEFAULT DISPLAY MODE 50 RELAY = 0 :REM DEFAULT RELAY MODE 55 HEIGHT = 0 :REM DEFAULT CHARACTER HEIGHT 60 CLR = 0 :REM DEFAULT COLOR CODE 65 TMOUT = 100 :REM DEFAULT TIMEOUT 70 RTMOUT = 100 :REM RESPONSE TIMEOUT 100 REM *************START USER PROGRAM 110 INPUT “ENTER MESSAGE TEXT”$(0) 120 INPUT “ENTER DISPLAY MODE”MDE 130 INPUT “ENTER RELAY STATUS”RELAY 140 INPUT “ENTER LINE NUMBER”LINO 150 INPUT “ENTER HEIGHT CODE”HEIGHT 160 INPUT “ENTER COLOR CODE”CLR 170 INPUT “ENTER DISP SPEED”DSPEED 180 GOSUB 5000 :REM SEND MESSAGE 190 GOTO 110 200 END 4999 REM *************END USER PROGRAM 5000 REM CREATE AND SEND OUTPUT ROUTINE 5010 GOSUB 5100 :REM ASSIGN FIELD 6 BYTE 1 5020 GOSUB 5200 :REM ASSIGN FIELD 6 BYTE 2 5030 GOSUB 5300 :REM ASSIGN FIELD 6 BYTE 3 5040 GOSUB 5400 :REM CALCULATE CHECKSUM 5050 GOSUB 5700 :REM SEND OUTPUT 5060 GOSUB 5900 :REM GET DL50 RESPONSE 5070 RETURN 5080 END 5100 REM ASSIGN FIELD 6 BYTE 1 5110 SPV=2**5*DSPEED 5120 MV=MDE 5130 F6=128+SPV+MV 5140 RETURN 5150 END 5200 REM ASSIGN FIELD 6 BYTE 2 5210 RLV = 2**6*RELAY 5220 HTV = 2**3*HEIGHT 5230 F62=128+RLV+HTV 5240 RETURN 5250 END

DL50 Response Variables

If the message is sent to a slave address other than 255, the DL50 will send back a reply packet. The subroutine which starts on line 5900 stores these reply bytes into the integer array RESP() and prints them to the console device.

Figure 6.5 Basic Program: T o Trigger Messages on a DL50 Display

6–28

(More on next page)

Chapter 6

Slave Mode Operation / Examples

5300 REM ASSIGN FIELD 6 BYTE 3 5310 F63=129 5320 RETURN 5330 END 5400 REM CHECKSUM CALCULATION 5410 TCSUM=0:CHD=0:CSUM=0 5420 PUSH 0 :REM GET LENGTH $(0) 5430 CALL 68 5440 POP SL 5450 BAD=0 5460 IF SL=0 THEN GOTO 5500 5470 FOR POSIT = 1 TO SL STEP 1 5480 TCSUM=TCSUM+ASC($(0),POSIT) 5490 NEXT POSIT 5500 CSUM=CTBT+CLR+24+TCSUM+SLADD+LINO 5510 CSUM=CSUM+13+F6+F62+F63 5520 CHH=INT(CSUM/256) 5530 CHL=CSUM–(256*CHH) 5540 IF CHL=13 .OR. CHL=18 THEN CHD=1:BAD=1 5550 IF CHH=13 .OR. CHH=18 THEN CHD=CHD+127:BAD=1 5560 IF BAD=1 THEN GOTO 5420 5570 RETURN 5580 END 5700 REM SEND OUTPUT SUBROUTINE 5710 PRINT# CHR(CTBT),CHR(CLR+24),$(0), 5720 PRINT# CHR(SLADD),CHR(LINO),CHR(13), 5730 PRINT# CHR(F6),CHR(F62),CHR(F63), 5740 PRINT# CHR(CHD),CHR(CHH),CHR(CHL), 5750 DLY=TMOUT:GOSUB 5800 :REM TIME DELAY 5760 RETURN 5770 END 5800 REM TIME DELAY SUBROUTINE 5805 FOR I = 1 TO DLY 5810 NEXT I 5820 RETURN 5830 END 5900 REM GET DL50 RESPONSE 5910 REM WAIT FOR DL50 RESPONSE 5920 IF SLADD=255 THEN RETURN 5930 J = 0 5940 PUSH1:CALL 36 : REM GET INPUT BUFFER LENGTH 5950 POP BL 5960 J = J + 1 5970 IF J > RTMOUT THEN GOTO 6030 5980 IF BL < 5 THEN GOTO 5940 ELSE 5990 5990 FOR I = 1 TO BL STEP 1 6000 RESP(I) = GET# 6010 PRINT RESP(I) 6020 NEXT I 6030 PUSH 1 :REM CLEAR INPUT BUFFER 6040 CALL 37 6050 RETURN 6060 END

6–29

Chapter

Chapter Objectives

Bootstrap Mode

A–B

Bootstrap Mode

This chapter describes how to operate the DL50 in the bootstrap mode. The bootstrap mode allows the DL50 to receive firmware revisions.

The bootstrap mode is entered by sending a Ctrl-L (Decimal 12) control byte as described in Table 5.B (Simplex Protocol) or Table 5.G (Duplex Protocol). Use the bootstrap mode to update or correct any anomalies in the DL50 firmware.

The following is required to update the DL50 firmware:

• A personal computer with DOS 3.0 or greater and an RS-232 port.

• A firmware update kit from Allen-Bradley (Catalog No. 2706–NR4)

which will contain a diskette and an instruction sheet.

• The addresses of all slave devices on the RS-485 network (if used).

• If there are devices on a network that have the same slave address, you

will need the serial numbers of the devices.

• If the firmware updates are done through the RS-485 port, you will need

an RS-485 to RS-232 converter.

How to Tell if Firmware Is Corrupted

If the DL50s on the link are driven by another master (such as a DL20, DL40, or other computer), then the master must be disabled before the firmware update can occur.

Upon power up, the DL50 performs a self test as described in Chapter 3. If the DL50 fails the Firmware Checksum test, the DL50 will alternately display the following two messages:

BAD CODE CHECKSUM Waiting for host . . .

Slave Addr: AAA Sub-Addr: SSSSSSSSSS

Where: AAA = three digit slave address

SSSSSSSSSS = DL50 Serial Number

At this point, the DL50 will remain idle waiting for the host to send a bootstrap command.

7–1

Chapter 7

Bootstrap Mode

Note: If operated under normal operating conditions, it is unlikely that the DL50 firmware will be corrupted.

Updating Firmware

The instruction sheet accompanying the firmware diskette provides complete instructions on updating the DL50 firmware. The firmware diskette is an easy-to-use menu driven package. You do not require any previous programming experience to update the firmware.

7–2

Chapter

Chapter Objectives

Troubleshooting Chart

Problem Probable Cause(s) Corrective Action(s)

DL50 does not power-up.

DL50 does not display messages properly or no messages are displayed.

Display characters are not proper size.

A–B

Troubleshooting and Maintenance

This chapter describes how to identify the most common problems that may occur when operating DL50 displays. This chapter describes how to use the diagnostics mode and circuit board LEDs as an aid in troubleshooting.

This chapter also provides instructions on cleaning the display window.

Table 8.A Troubleshooting

1. Power source not providing power.

2. Power source is not correctly attached to DL50.

3. Blown fuse.

4. Defective power supply (refer to Using LED Indicators and Diagnostic Mode).

1. Communications lines are not properly connected.

2. DL50 is not properly configured.

3. DL50 was not restarted after configuration changes.

4. Incorrect protocol used.

5. Improper message format.

6. Faulty processor board, display board, or power supply.

7. Incorrect jumper setting.

8. No Ctrl–R command sent.

1. Line number is set incorrectly.

2. Improper DIP switch setting for character height.

1. Verify presence of 100-240 VAC, 50-60 Hz.

2. Verify power connections as shown in Chapter 4.

3. Replace fuse.

4. Replace power supply as described in this chapter.

1. Verify communication line connections as shown in Chapter 4.

2. Verify the DIP switch settings as described in Chapter 3.

3. Cycle power to the DL50 or press the Restart switch.

4. Verify that your protocol matches the DIP switch setting.

5. Make sure your messages are properly formatted as described in Chapter 5. Use sample messages provided in Chapter 6 as a means of testing the display.

6. Check status of circuit board LEDs as described in next section of this chapter.

7. Set J-1 on processor board to the position indicated in the diagram on the inside back cover of the manual.

8. In duplex mode, send Ctrl-R before each new data packet.

1. Verify that correct line number is provided, refer to Chapter 5.

2. Verify character size DIP switch setting, refer to Chapter 3.

8–1

Chapter 8

Troubleshooting and Maintenance

Troubleshooting

(Continued)

Problem

Displayed messages are not full brightness.

Messages “BAD CODE CHECKSUM Waiting

for host

” and“Slave Addr: XXX” are displayed

alternately.

Sections of messages are not displayed.

Large text message on a Catalog No. 2706-F11J, -F11JC DL50 from a DL20 / DL40 master is incomplete.

No message or long delay before large text message from a DL20 / DL40 master is displayed on a Catalog No. 2706-F11J, -F11JC DL50.

Table 8.A Troubleshooting (cont’d)

Probable Cause(s) Corrective Action(s)

1. DL50 has entered reduced brightness mode. Refer to Chapter 2 for a description of this mode.

2. Dirty display window.

1. Corrupted firmware.

2. Dipswitch S3-8 set incorrectly.

1. Loose connections.

2. Faulty display board.

1. Wait time on master is insufficient for a complete scroll.

2. Scroll attribute of DL20/DL40 is set to YES.

1. Scroll attribute of DL20/DL40 is set to YES.

1. Check that the ambient temperature is within specification provided in Chapter 10. Lower ambient temperature if possible.

2. Clean window as described in this chapter.

1. Use bootstrap mode and firmware diskette to re-install firmware. Refer to Chapter 7 for instructions.

2. Set dipswitch S3-8 to OFF position.

1. Use the wiring diagrams in Appendix F to check for loose connections.

2. Use the display test to check the operation of the LEDs. Have qualified service personnel replace faulty display boards. Refer to Table 8.B.

1. Set master wait time for at least 4 seconds.

2. Turn off scroll attribute.

1. Turn off scroll attribute.

8–2

Chapter 8

Troubleshooting and Maintenance

Using LED Indicators and Diagnostic Mode

To aid in troubleshooting, LED indicators are provided on the Power Supply Board and Processor Board (refer to Figure 8.1). Use the diagnostics mode to further isolate problems.

Figure 8.1 Fault Isolation LEDs

AC Power LED

RESET

DC Power LEDs

The Processor Board has two LEDs indicating that the proper DC power is applied to the board. The Processor Board also has an LED indicating that AC power is applied. Use these LEDs in conjunction with the diagnostic mode to isolate faulty components.

8–3

Chapter 8

Troubleshooting and Maintenance

The general guidelines for using the LEDs to isolate faults are:

1. If the DL50 appears to have a fault or if the STATUS LED on the front panel is flashing, the DL50 should be opened for diagnostics.

ATTENTION:

Loosen the screws securing the front cover latches of the DL50. There are 6 door latches on the small display (Catalog No. 2706-F11J, -F11JC) and 10 latches on the large display (Catalog No. 2706-F21J, -F21JC).

Note: Loosen, do not remove, screws to turn latches.

Disconnect power before servicing. Failure to follow this warning could result in electrical shock.

ATTENTION:

Carefully turn the latches away from the door. After all of the latches have been turned, the front cover can be lowered.

2. Set the Mode Select DIP switches to select Diagnostics (refer to Figure 3.2, DIP switch S2-7 ON). Press the RESET button or cycle the power. Observe the front panel display.

In the diagnostics mode, the DL50 will run the following tests:



  

 

 

  

 

The next step allows the front cover to open downward. Make sure there is adequate clearance. Failure to provide proper clearance may cause damage to the display.

8–4

 

The DL50 will continuously repeat the diagnostic tests until a different operating mode is selected (DIP switches) and the RESET button is pressed or power is cycled.

Chapter 8

Troubleshooting and Maintenance

As each test is being made, the DL50 displays the name of the test. After each test the DL50 displays the results. The results are also sent out to the RS-232 port.

P Confidence Test

This test checks the ability to read/write to the processor’s internal registers. If this test fails, the processor board needs replacement. Refer to Replacement Parts List, Table 8.B.

RAM Test

This test writes to RAM and verifies the write. If this test fails, the processor board needs replacement. Refer to Replacement Parts List, Table 8.B.

ROM Test

Performs a checksum and compares the checksum against the stored checksum. If this test fails, use the bootstrap mode to reload firmware.

Processor Board Power Test

Verifies that the proper voltages are present at the processor board. Refer to next section for instructions on how to use the diagnostic LEDs to verify correct voltages at the processor board.

Serial Test

In this test the DL50 prompts the user to enter text from a terminal. Any text received within 10 seconds is displayed on the DL50. After 10 seconds, the test is terminated. If this test fails, check communications connections.

Display Test

This test displays test patterns. Use this test to isolate faulty display boards. Faulty red display boards can be replaced, refer to Replacement Parts List, see Table 8.B. Faulty tricolor displays must be returned to the factory for repair.

8–5

Rockwell Automation 2706-F11J, 2706-F11JC, 2706-F21J, 2706-F21JC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Important User Information

Table of Contents

Using This Manual

Introduction to the DL50

Configuring the DL50

Installing the DL50

Serial Communications

Slave Mode Operation / Examples

Bootstrap Mode

Troubleshooting and Maintenance

Specifications

Display Descriptions

ASCII Character Set

Dimensions

Serial Address Settings

Internal Wiring Diagrams

Checksum Calculations

Character Attribute Worksheet

European Union Directive Compliance

Glossary

Index

Chapter Objectives

Overview of this Manual

Intended Audience

Conventions Used

Attention Symbol

CE Directives

Related Publications

Chapter Objectives

Overview

Features

Character Number and Size

Major Components

Descriptions

Operating Modes

Communication Examples

Chapter Objectives

DIP Switch Locations

DIP Switch Functions

Setting Switches

Selecting Slave Address

Selecting Protocol

Selecting Baud Rate

Selecting Operating Mode

Enabling/Disabling Checksum

Selecting Display Type

Selecting Default Display Color

DL50 Reset

Chapter Objectives

Mounting Dimensions

Mounting Methods

Surface Mounting

Chain Suspension

Wiring Recommendations

European Union Directive Compliance

Grounding Recommendations

Connecting Power

Annunciation Relay Connections

RS-232 Connections

RS-485 Connections

Connection to Personal Computers

Connection to Allen-Bradley Programmable Controllers

Peripheral Communications Module Catalog No. 1771-GA

ASCII I/O Module Catalog No. 1771-DA

Flexible Interface Module Catalog No. 2760-RB

Chapter Objectives

Protocols

Host Device Compatibility

Simplex Protocol

Duplex Protocol

Chapter Objectives

Slave Mode Operation

Example Messages

Programming Examples

Chapter Objectives

Bootstrap Mode