Rockwell Automation 1791-I0VX User Manual

Block I/O Cat. No. 1791-IOBX and -IOVX

User Manual

Important User Information

Because of the variety of uses for the products described in this publication, those responsible for the application and use of this control equipment must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards.

The illustrations, charts, sample programs and layout examples shown in this guide are intended solely for example. Since there are many variables and requirements associated with any particular installation, Allen-Bradley does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-Bradley publication SGI–1.1, “Safety Guidelines For The Application, Installation and Maintenance of Solid State Control” (available from your local Allen-Bradley office) describes some important differences between solid-state equipment and electromechanical devices which should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or in part, without written permission of Allen–Bradley Company, Inc. is prohibited.

Throughout this manual we make notes to alert you to possible injury to people or damage to equipment under specific circumstances.

A

TTENTION:

procedures are not followed properly.

A

TTENTION:

or economic loss can occur if procedures are not followed properly.

Attention helps you:

Identify a hazard. Avoid the hazard. Recognize the consequences.

Important: We recommend you frequently backup your application programs on appropriate storage medium to avoid possible data loss.

Tells readers where people may be hurt if

Tells readers where machinery may be damaged

Using This Manual

Preface

Purpose

of Manual

Audience

Vocabulary

Manual Organization

This manual shows you how to use your Block I/O with an Allen-Bradley programmable controller. It helps you:

install program and troubleshoot your module.

You must be able to program and operate an Allen-Bradley programmable controller (PLC) to make efficient use of Block I/O modules.

We assume that you know how to do this in this manual. If you do not, refer to the appropriate PLC programming and operations manual before you attempt to program this module.

In this manual, we refer to:

the block I/O module as the “block” or the “module” the programmable controller as the “controller” or “processor.”

This manual is divided into 4 chapters. The following chart shows each chapter with its corresponding title and brief overview of the topics covered in that chapter.

Chapter Title Topics Covered

1 Introducing Block I/O Description of the module, including general and hardware features 2 Installing the Module Module power requirements, location, and wiring information 3 Configuring your block I/O How to set the configuration switches and address the block I/O. 4 Troubleshooting How to use the indicators to troubleshoot your block I/O module.

How to replace the fuse.

Appendix A Specifications Specifications for the block I/O.

P-1

Preface

Using This Manual

About

Block I/O

Related Publications

Block I/O consists of small, self–contained remote I/O devices complete with power supply, programmable controller interface, input/output connections and signal conditioning circuitry.

This publication covers the 1791–IOBX and –IOVX block I/O modules. The 1791–IOBX has 64 sinking inputs and 64 sourcing outputs; the 1791–IOVX has 64 sourcing inputs and 64 sinking outputs. In all other aspects, they are identical.

For a list of publications with information on Allen-Bradley programmable controller products, consult our publication index (SD499).

P-2

Table of Contents

Introducing

Block I/O

Installing Block I/O

Configuring Y

our Block I/O

Chapter 1

Chapter Objectives

General Description 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

How the Block I/O Fits in a PLC System 1-3. . . . . . . . . . . . . . . . . .

Summary 1-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 2

Chapter Objectives Pre–installation Considerations

Installing the Block I/O 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connecting W

Remote I/O Link Wiring 2-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Extended Node Capability 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Compatibility of 1771 I/O Products with

Extended Node Operation 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fusing 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Summary 2-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

iring 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Chapter 3

Chapter Objectives

Setting the Configuration Switches 3-1. . . . . . . . . . . . . . . . . . . . . . .

Summary 3-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1. . . . . . . . . . . . . . . . . . . . . . . . . .

3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting

Specifications

Chapter 4

Chapter Objectives

Indicators 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Replacing a Fuse

Summary 4-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix A

Specifications A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I

Table of Contents

(This page left intentionally blank.)

II

Introducing Block I/O

Chapter

1

Chapter

Objectives

General Description

In this chapter you will learn what block I/O is, its features, and how it functions.

Block I/O consists of small, self-contained remote I/O devices complete with power supply, programmable controller interface, input/output connections and signal conditioning circuitry.

The 1791-IOBX 24V dc module has 64 sink input channels, and 64 source output channels.

The 1791-IOVX 24V dc module has 64 source input channels, and 64 sink output channels.

Complete specifications for these modules are contained in Appendix A.

The blocks are compatible with PLC-2 programmable controllers, and the SLC used with PLC-2 family programmable controllers, a sub-scanner module is used to communicate with the blocks. When used with PLC-3 and PLC-5 family programmable controllers, they can be connected directly to the controller or to a scanner module. When used with SLC 500 controllers, a 1747-SN remote I/O scanner is used to communicate with the blocks.



, PLC-3, and PLC-5 family



500 modular controllers. When

A

TTENTION:

you must use a 1775-S5 or -SR5 scanner module. Do not use 1775-SR, -S4A or -S4B scanner modules.

Note: The 1791-IOBX and -IOVX block modules are not compatible with the 1747-DSN scanner module.

Connections are made to removable terminal blocks mounted on the sides of the block.

Physical features of the block I/O are shown in Figure 1.1.

When using PLC-3 programmable controllers,

1-1

Chapter 1

Introducing Block I/O

Figure 1.1 Major

Features of the 1791-IOBX and -IOVX Block I/O Modules

(-IOBX shown)

Rack Address

Switch

, Active,

Power

Comm and Fuse

LED Indicators

Removable

Input Terminal

Blocks

87654321

CONFIGURATION

SWITCHES

RACK ADDR

INPUT

DISPLAY

SELECT

OUTPUT

POWER ACTIVE COMM FUSE

1791-IOBX

128

POINT

24V DC DISTRIBUTED

I/O MODULE

64

24VDC SINK INPUTS

64 24VDC SOURCE OUTPUTS

CONFIGURATION SWITCHES

Configuration Switches

(on top of unit)

Input/Output

Status LED

Array

Display Select

Pushbuttons

Removable

Output Terminal

Blocks

Terminal Block

Removal Screws

(same on all 4

terminal blocks)

1-2

GROUP

No.

RIO Wiring Block

+24V dc Power

GROUP No.

Termination

Resistor

Switch

10914-I

Wiring Terminals - The remote I/O field wiring is made to 4 separate removable 37-pin terminal blocks mounted on the sides of the module. Terminal assignments are shown in chapter 3.

A separate nonremovable terminal block is provided for connection of the remote I/O link and external 24V dc power supply.

Chapter 1

P

A

F

Introducing Block I/O

Switch Assemblies - Two DIP switches are provided for setting the I/O configuration and rack address.

The configuration switch lets you select baud rate, last state, processor restart lockout, last rack and I/O group.

The rack addr

ess switch

lets you select the system rack address for the

block.

A third switch is provided for selection of the termination resistor. Status Indicators - Indicators are provided for power, active,

communication and fuse blown indications. An LED array provides input/output status.

Status Indicators - Bi-color LED indicators provide power, active, communication and fuse blown indications. An LED array provides input/output status.

Indicator Indication

ower (green/wht)

ctive (green/red)

Comm (green/wht)

use (red/wht)

On (green) Customer voltage is present Of

f (wht) On (green) CPU operating correctly Of

f (red) On (green) Communication correctly established Of

f (wht) On (red) One of the 4 output fuses is open Of

f (wht)

No customer voltage (less than 2V)

CPU not running

Communication not established

All fuses are intact

The I/O status array is an 8 by 8 array of 64 LEDs capable of displaying the status of 32 inputs and 32 outputs at any one time. Pushbuttons are provided to toggle the display between the lower 32 bits and the upper 32 bits.

How

the Block I/O Fits in a

PLC System

Block I/O is a complete I/O interface that includes the functionality of the I/O rack, adapter, power supply, and I/O modules in a single unit. Simply connect sensors and actuators to the module and use the remote I/O cable to connect the block I/O to your programmable controller (Figure 1.6).

The 1791-IOBX block uses sinking inputs and sourcing outputs.

1-3

Chapter 1

Introducing Block I/O

In sinking inputs, the dc common is bussed on the block. and the current is sourced from the field device. The sourcing field device switches the hot side of the power supply bus causing current to flow through the sourcing device to the sinking input on the block. Refer to Figure 1.2.

Figure 1.2 Sinking

Input Example

+V

Bus

DC Power Supply

Field Device

-V

Block I/O

Sinking Input

Common

10826-I

Sourcing outputs have the power bussed in the block. When the output is on, current is supplied to the field control device, which sinks the current. The field circuit and the equipment remain at ground potential until the output is turned on. Refer to Figure 1.3.

Note: The outputs must be externally fused to protect the device output against overcurrent or short circuit conditions.

1-4

Figure 1.3 Sourcing

Block I/O

Common

Output Example

+V

Fuse

Field Device

Common

DC Power Supply

-V

Bus

The 1791-IOVX block uses sourcing inputs and sinking outputs.

10827-I

Chapter 1

Introducing Block I/O

In sourcing input modules (Figure 1.4), the +V on dc circuits is bussed on the module supplying (sourcing) the current for each input circuit. The field device switches the circuit to the common (side of the power supply, sinking the circuit and causing current to flow from the module’s input.

Figure 1.4 Sourcing

Input Example

DC Power Supply

-V

+V

Block

I/O

Field Device

Input

dc Common Bus

10917-I

In sinking outputs (Figure 1.5), the current flow is reversed. The dc common is bussed on the module and the current is sourced from the field device being actuated. When an output is turned on, the output switch in the module sinks the circuit, causing current to flow from the +V bus through the field device to the module.

Note: The outputs must be externally fused to protect the device output against overcurrent or short circuit conditions.

Figure 1.5 Sinking

Output Example

Block I/O

Fuse

Field Device

+V

Bus

Common

DC Power Supply

-V

10918-I

1-5

Chapter 1

Introducing Block I/O

Block I/O functions exactly like any Allen-Bradley remote I/O product. Input and output data is scanned asynchronously and transferred back and forth between the block and the controller input and output image table.

You connect the block I/O to your remote I/O link as you would any other device. The block looks like a 1/2 I/O rack to the processor, and uses 4 words of input image table memory and 4 words of output image table memory. The block is addressed directly on the remote I/O link.

Figure 1.6 Block

I/O Connection in a PLC System

Blocks are daisy-chained to a programmable controller or scanner.

,

Programmable Controller, or Scanner

Summary

Block I/O - each block is 1/2 I/O rack.

10915-I

In this chapter you learned what block I/O is, its features and how it functions.

1-6

Installing Block I/O

Chapter

2

Chapter

Pre-installation Considerations

Installing the Block I/O

Objectives

In this chapter you will learn how to mount the block, how to connect the remote I/O link, how to connect the input and output wiring to the block, and how to terminate the remote I/O link.

Before installation, you must determine:

the number of blocks desired the total distance of the installation transmission rate desired

Mounting dimensions for the block I/O module are shown in Figure 2.1. Mount the blocks horizontally with a minimum of 2” between blocks. This air gap is necessary to maintain proper cooling air flow through the block.

2-1

Chapter 2

Installing Block I/O

0.67

(17.105)

Figure 2.1 Mounting and -IOVX)

Dimensions for the Block I/O Module (Cat. No. 1791-IOBX

6.15

(156.21)

4.8 (122.0)

87654321

CONFIGURATION

SWITCHES

RACK ADDR

Dimensions:

6.15W x 13.0H x 1.72D

(156.21W x 334.0H x 43.7D)

Inches

(Millimeters)

12.7

(322.0)

GROUP

POWER

ACTIVE

COMM

FUSE

INPUT OUTPUT

1791-IOBX 128 POINT

24V DC

DISTRIBUTED

I/O MODULE

CONFIGURATION SWITCHES

No.

DISPLAY SELECT

GROUP No.

12.28 (312.0)

13.0 (334.0)

2-2

10916-I

The operating temperature in the air gap between block I/O modules must not exceed 60

o

C (140oF). The dimensions of the air gap required are

shown in Figure 2.2.

Figure 2.2 Clearance

Chapter 2

Installing Block I/O

Required for Block I/O Modules

2

(50.8)

Connecting Wiring

2

(50.8)

2

(50.8)

2

(50.8)

Inches

(Millimeters)

10919-I

Connections to the block I/O module are made to the removable terminal blocks on each side of the module. Input connections are on the left side, and output connections are on the right side. The input terminal blocks are keyed differently than the output blocks to prevent incorrect insertion.

TTENTION:

A

Both input terminal blocks are keyed alike. If removed for wiring, or module replacement, make certain that the terminal blocks are placed in their proper position when reinstalling.

Wiring connections for the 1791-IOBX and -IOVX are shown in Tables

2.A through 2.H.

Catalog Number 1794-IOBX Catalog Number 1794-IOVX

Input Terminal Wiring Input Terminal Wiring

Groups 0 and 1 (TRM1) Table 2.A, page 2-4 Groups 0 and 1 (TRM1) Table 2.E, page 2-8 Groups 2 and 3 (TRM2) Table 2.B, page 2-5 Groups 2 and 3 (TRM2) Table 2.F, page 2-9

Output Terminal Wiring Output Terminal Wiring

Groups 0 and 1 (TRM3) Table 2.C, page 2-6 Groups 0 and 1 (TRM3) Table 2.G, page 2-10 Groups 2 and 3 (TRM4) Table 2.D, page 2-7 Groups 2 and 3 (TRM4) Table 2.H, page 2-11

Remote I/O link wiring connections are shown in Figure 2.3.

2-3

Chapter 2

Numb

Installing Block I/O

T

able 2.A

1791-IOBX

Input T

erminal W

iring for Groups 0 and 1 (TRM1) for PLC

Family Controllers and SLC Processors

Terminal

er

Input Assignment

Group 0

PLC SLC

Terminal

er

Input Assignment

Group 1

PLC SLC

1 Common A Common A 19 Common B Common B 2 Input 00 Input 00 20 Input 00 Input 00 3 Input 01 Input 01 21 Input 01 Input 01 4 Input 02 Input 02 22 Input 02 Input 02 5 Input 03 Input 03 23 Input 03 Input 03 6 Input 04 Input 04 24 Input 04 Input 04 7 Input 05 Input 05 25 Input 05 Input 05 8 Input 06 Input 06 26 Input 06 Input 06

9 Input 07 Input 07 27 Input 07 Input 07 10 Input 10 Input 08 28 Input 10 Input 08 11 Input 11 Input 09 29 Input 11 Input 09 12 Input 12 Input 10 30 Input 12 Input 10 13 Input 13 Input 11 31 Input 13 Input 11 14 Input 14 Input 12 32 Input 14 Input 12 15 Input 15 Input 13 33 Input 15 Input 13 16 Input 16 Input 14 34 Input 16 Input 14 17 Input 17 Input 15 35 Input 17 Input 15 18 N.C. N.C. 36 N.C. N.C.

37 N.C. N.C.

+V

PLC SLC

1

2

INPUT

COM

00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC

COM 00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC

INPUT

COM

00

01

02

03

04

05

06

0

1

07

0

08

09

10

11

12

13

14

15

NC

COM 00

01

02

03

04

05

06

07

08

09

10

11

12

1

13

14

15

NC

2-4

Common

36 37

12490-I

Chapter 2

Numb

Installing Block I/O

T

able 2.B

1791-IOBX

Input T

erminal W

iring for Groups 2 and 3 (TRM2) for PLC

Family Programmable Controllers and SLC Processors

Terminal

er

Input Assignment

Group 2

PLC SLC

Terminal

er

Input Assignment

Group 3

PLC SLC

1 Common C Common C 19 Common D Common D 2 Input 00 Input 00 20 Input 00 Input 00 3 Input 01 Input 01 21 Input 01 Input 01 4 Input 02 Input 02 22 Input 02 Input 02 5 Input 03 Input 03 23 Input 03 Input 03 6 Input 04 Input 04 24 Input 04 Input 04 7 Input 05 Input 05 25 Input 05 Input 05 8 Input 06 Input 06 26 Input 06 Input 06

9 Input 07 Input 07 27 Input 07 Input 07 10 Input 10 Input 08 28 Input 10 Input 08 11 Input 11 Input 09 29 Input 11 Input 09 12 Input 12 Input 10 30 Input 12 Input 10 13 Input 13 Input 11 31 Input 13 Input 11 14 Input 14 Input 12 32 Input 14 Input 12 15 Input 15 Input 13 33 Input 15 Input 13 16 Input 16 Input 14 34 Input 16 Input 14 17 Input 17 Input 15 35 Input 17 Input 15 18 N.C. N.C. 36 N.C. N.C.

37 N.C. N.C.

+V

1

2

PLC SLC

COM

NC

00

02

04

06

10

12

14

16

COM 00

02

04

06

10

12

14

16

01

03

05

07

11

13

15

17

01

03

05

07

11

13

15

GROUP

17

NC

COM

00

01

02

03

04

05

06

07

08

09

10

11

12

13

2

14

2

15 NC COM

00

01

02

03

04

05 06

07 08

09 10

11 12

13

No.

3

GROUP No.

14

15

NC

3

NC

Common

36 37

12490-I

2-5

Chapter 2

Numb

Installing Block I/O

T

able 2.C

1791-IOBX

Output T

erminal W

iring for Groups 0 and 1 (TRM3) for PLC

Family Programmable Controllers

Terminal

er

Output Assignment

Group 1

PLC SLC

Terminal

Output Assignment

er

PLC SLC

Group 0

1 N.C. N.C. 20 Common A Common A 2 Common B Common B 21 Output 17 Output 15 3 Output 17 Output 15 22 Output 16 Output 14 4 Output 16 Output 14 23 Output 15 Output 13 5 Output 15 Output 13 24 Output 14 Output 12 6 Output 14 Output 12 25 Output 13 Output 11 7 Output 13 Output 11 26 Output 12 Output 10 8 Output 12 Output 10 27 Output 11 Output 09

9 Output 11 Output 09 28 Output 10 Output 08 10 Output 10 Output 08 29 Output 07 Output 07 11 Output 07 Output 07 30 Output 06 Output 06 12 Output 06 Output 06 31 Output 05 Output 05 13 Output 05 Output 05 32 Output 04 Output 04 14 Output 04 Output 04 33 Output 03 Output 03 15 Output 03 Output 03 34 Output 02 Output 02 16 Output 02 Output 02 35 Output 01 Output 01 17 Output 01 Output 01 36 Output 00 Output 00 18 Output 00 Output 00 37 VDC A VDC A 19 VDC B VDC B

OUTPUT

0

1

+VDC

05

07

09

11

13

15

COM NC

PLCSLC

3637

+VDC

OUTPUT

+VDC

00

L

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

COM

00

L

01

02

03

04

06

08

10

12

14

00

L

01

02

03

04

05

06

07

10

11

12

13

14

15

0

16

17

COM

+VDC

00

L

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

COM

1

NC

1

2

Field Device

Common

12491-I

2-6

T

Numb

able 2.D

1791-IOBX

Output T

Family Programmable Controllers

Terminal

er

Group 3

PLC SLC

Terminal

1 N.C. N.C. 20 Common C Common C

2 Common D Common D 21 Output 17 Output 15

3 Output 17 Output 15 22 Output 16 Output 14

4 Output 16 Output 14 23 Output 15 Output 13

5 Output 15 Output 13 24 Output 14 Output 12

6 Output 14 Output 12 25 Output 13 Output 11

7 Output 13 Output 11 26 Output 12 Output 10

8 Output 12 Output 10 27 Output 11 Output 09

9 Output 11 Output 09 28 Output 10 Output 08 10 Output 10 Output 08 29 Output 07 Output 07 11 Output 07 Output 07 30 Output 06 Output 06 12 Output 06 Output 06 31 Output 05 Output 05 13 Output 05 Output 05 32 Output 04 Output 04 14 Output 04 Output 04 33 Output 03 Output 03 15 Output 03 Output 03 34 Output 02 Output 02 16 Output 02 Output 02 35 Output 01 Output 01 17 Output 01 Output 01 36 Output 00 Output 00 18 Output 00 Output 00 37 VDC C VDC C 19 VDC D VDC D

Output Assignment

er

PLC SLC

Group 2

erminal W

Chapter 2

Installing Block I/O

iring for Groups 2 and 3 (TRM4) for PLC

PLCSLC

3637

+VDC

00

L

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

2

COM

+VDC

00

L

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

2

3

COM NC

+VDC

00

L 01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

2

COM

+VDC

00

L 01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

2

3

COM

NC

1

2

+VDC

Field Device

Common

12491-I

2-7

Chapter 2

nal

N

nal

N

Installing Block I/O

T

able 2.E 1791-IOVX Family Programmable Controllers

Input Assignment

Terminal

umber

Group 0

Terminal

umber

PLC SLC

1 VDC A VDC A 19 VDC B VDC B 2 Input 00 Input 00 20 Input 00 Input 00 3 Input 01 Input 01 21 Input 01 Input 01 4 Input 02 Input 02 22 Input 02 Input 02 5 Input 03 Input 03 23 Input 03 Input 03 6 Input 04 Input 04 24 Input 04 Input 04 7 Input 05 Input 05 25 Input 05 Input 05 8 Input 06 Input 06 26 Input 06 Input 06

9 Input 07 Input 07 27 Input 07 Input 07 10 Input 10 Input 08 28 Input 10 Input 08 11 Input 11 Input 09 29 Input 11 Input 09 12 Input 12 Input 10 30 Input 12 Input 10 13 Input 13 Input 11 31 Input 13 Input 11 14 Input 14 Input 12 32 Input 14 Input 12 15 Input 15 Input 13 33 Input 15 Input 13 16 Input 16 Input 14 34 Input 16 Input 14 17 Input 17 Input 15 35 Input 17 Input 15 18 N.C. N.C. 36 N.C. N.C.

Input Assignment

Group 1

PLC SLC

37 N.C. N.C.

Input T

erminal W

iring for Groups 0 and 1 (TRM1) for PLC

PLC SLC

+VDC

1

2

INPUT

+VDC 00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC

+VDC

00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC

0

1

INPUT

+VDC 00

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

NC

+VDC

00

01

02

03

04

05

06

07

08

09

10

11

12

13

14

NC

0

15

1

36 37

12493-I

2-8

T

nal

N

nal

N

able 2.F

1791-IOVX

Input T

erminal W

iring for Groups 2 and 3 (TRM2) for PLC

Family Programmable Controllers

Chapter 2

Installing Block I/O

Terminal

umber

Input Assignment

Group 2

PLC SLC

Terminal

umber

Input Assignment

Group 3

PLC SLC

1 VDC C VDC C 19 VDC D VDC D

2 Input 00 Input 00 20 Input 00 Input 00

3 Input 01 Input 01 21 Input 01 Input 01

4 Input 02 Input 02 22 Input 02 Input 02

5 Input 03 Input 03 23 Input 03 Input 03

6 Input 04 Input 04 24 Input 04 Input 04

7 Input 05 Input 05 25 Input 05 Input 05

8 Input 06 Input 06 26 Input 06 Input 06

9 Input 07 Input 07 27 Input 07 Input 07 10 Input 10 Input 08 28 Input 10 Input 08 11 Input 11 Input 09 29 Input 11 Input 09 12 Input 12 Input 10 30 Input 12 Input 10 13 Input 13 Input 11 31 Input 13 Input 11 14 Input 14 Input 12 32 Input 14 Input 12 15 Input 15 Input 13 33 Input 15 Input 13 16 Input 16 Input 14 34 Input 16 Input 14 17 Input 17 Input 15 35 Input 17 Input 15 18 N.C. N.C. 36 N.C. N.C.

37 N.C. N.C.

+VDC

1

2

PLC SLC

+VDC 00

01

02

03

04

05

06

07

10

11

12

13

14

2

15

16

17

NC

+VDC

00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC

3

NC

+VDC 00

02

04

06

08

10

12

14

NC

+VDC

00

02

04

06

08

10

12

14

NC

01

03

05

07

09

11

2

13

15

01

03

05

07

09

11

13

15

3

NC

36 37

12493-I

2-9

Chapter 2

Numb

Installing Block I/O

T

able 2.G

1791-IOVX

Output T

erminal W

iring for Groups 0 and 1 (TRM3) for PLC

Family Programmable Controllers

Terminal

er

Output Assignment

Group 1

PLC SLC

Terminal

Output Assignment

Group 0

er

PLC SLC

1 N.C. N.C. 20 Common A Common A 2 Common B Common B 21 Output 17 Output 15 3 Output 17 Output 15 22 Output 16 Output 14 4 Output 16 Output 14 23 Output 15 Output 13 5 Output 15 Output 13 24 Output 14 Output 12 6 Output 14 Output 12 25 Output 13 Output 11 7 Output 13 Output 11 26 Output 12 Output 10 8 Output 12 Output 10 27 Output 11 Output 09

9 Output 11 Output 09 28 Output 10 Output 08 10 Output 10 Output 08 29 Output 07 Output 07 11 Output 07 Output 07 30 Output 06 Output 06 12 Output 06 Output 06 31 Output 05 Output 05 13 Output 05 Output 05 32 Output 04 Output 04 14 Output 04 Output 04 33 Output 03 Output 03 15 Output 03 Output 03 34 Output 02 Output 02 16 Output 02 Output 02 35 Output 01 Output 01 17 Output 01 Output 01 36 Output 00 Output 00 18 Output 00 Output 00 37 VDC A VDC A 19 VDC B VDC B

SLC PLC

OUTPUT

+VDC

00

L

01

02

03

04

05

06

07

08

09

10

11

12

13

14

0

15

-COM

+VDC

00

L

01

02

03

04

05

06

07

08

09

10

11

12

13

14

1

15

-COM

NC

OUTPUT

+VDC

01

03

05

07

11

13

15

0

17

-COM

+VDC

01

03

05

07

11

13

15

1

17

-COM

NC

3637

00

L

02

04

06

10

12

14

16

00

L

02

04

06

10

12

14

16

+VDC

Field Device

Common

2

1

12494-I

2-10

T

Numb

R

able 2.H

1791-IOVX

Output T

erminal W

iring for Groups 2 and 3 (TRM4) for PLC

Family Programmable Controllers

Chapter 2

Installing Block I/O

Terminal

er

Output Assignment

Group 3

PLC SLC

Terminal

Output Assignment

Group 2

er

PLC SLC

1 N.C. N.C. 20 Common C Common C

2 Common D Common D 21 Output 17 Output 15

3 Output 17 Output 15 22 Output 16 Output 14

4 Output 16 Output 14 23 Output 15 Output 13

5 Output 15 Output 13 24 Output 14 Output 12

6 Output 14 Output 12 25 Output 13 Output 11

7 Output 13 Output 11 26 Output 12 Output 10

8 Output 12 Output 10 27 Output 11 Output 09

9 Output 11 Output 09 28 Output 10 Output 08 10 Output 10 Output 08 29 Output 07 Output 07 11 Output 07 Output 07 30 Output 06 Output 06 12 Output 06 Output 06 31 Output 05 Output 05 13 Output 05 Output 05 32 Output 04 Output 04 14 Output 04 Output 04 33 Output 03 Output 03 15 Output 03 Output 03 34 Output 02 Output 02 16 Output 02 Output 02 35 Output 01 Output 01 17 Output 01 Output 01 36 Output 00 Output 00 18 Output 00 Output 00 37 VDC C VDC C 19 VDC D VDC D

SLC PLC

+VDC

00

L 01

02

03

04

05

06

07

08

09

10

11

12

13

14

2

15

-COM

+VDC

00

L 01

02

03

04

05

06

07

08

09

10

11

2

3

12

13

14

15

-COM

NC

3637

+VDC

00

L 01

02

03

04

05

06

07

10

11

12

13

14

15

16

2

17

-COM

+VDC

00

L 01

02

03

04

05

06

07

10

11

12

13

2

3

14

15

16

17

-COM

NC

Field Device

+VDC

T

able 2.I

Wiring

Block Designations

Connector Designation Description

1 (BLU) Blue wire - RIO 2 (CLR) Clear wire - RIO Shield Shield - RIO

emote I/O Connector

Chassis GND

Chassis Ground 24VDC RET +24V ground 24VDC +24V dc

Input Terminals 1 thru 37 See Tables Output Terminals 1 thru 37 See Tables

2

1

Common

12494-I

2-11

Chapter 2

Installing Block I/O

Power Supply Requirements

An external 24V dc (+10/-25%) power supply is required to power the block. Total current required to power the block is equal to 300mA.

In addition, the external power supply should have current limiting capabilities. The voltage range must not exceed 18.0-26.4V dc.

Wiring Requirements

Wiring cable requirements are shown in Table 2.J.

T

able 2.J

Acceptable Wiring Cables for Block I/O Connection

Use Cable Type With

Remote I/O Link Belden 9463

Input and Output wiring

Up to 14AWG (2mm with 3/64 inch (1.2mm) insulation

Figure 2.3 Remote

GROUP

No.

2

(CLR)

I/O Link W

Shield

1

(BLU)

iring

Chassis

GND

24VDC

RET

2)

Stranded

24VDC

PLC-2, PLC-3, PLC-5 family programmable controllers and SLC controllers

All

GROUP No.

TERMINATION RESISTOR

-

150 OHM

-OFF

- 82 OHM

2-12

2

1

(CLR)

Connection Clear

wire X

(BLU)

Shield

Blue wire X

Shield wire X

10928-I

Chapter 2

Installing Block I/O

Remote

I/O Link W

iring

Blocks must be wired in series as shown in Figure 2.4. Do not attempt to wire any block in parallel.

The number of blocks used depends not only on the user requirements but also on the system used.

Figure 2.4 Series

Connection for Block I/O Using PLC-2, PLC-3 or PLC-5 Family

Programmable Controllers

To Programmable Controller or I/O Scanner Module

1 I/O Rack

Install terminating resistor on last block.

1 I/O Rack

10929-I

2-13

Chapter 2

Installing Block I/O

Termination Resistor

A termination resistor must be used on the last block in the series. A 150 ohm and 82 ohm termination resistors are built into the unit. To select the termination resistor, position the switch to the desired position as shown in Figure 2.5.

Figure 2.5 Installing

the T

ermination Resistor

Extended

Node Capability

2

(CLR)

Shield

1

(BLU)

24VDC

Chassis

GND

Position across 1 and 2 as follows:

150 ohm - position switch at top; 82 ohm - position switch at bottom; OFF - no resistor - position switch in middle.

24VDC

RET

switch to connect termination resistor

TERMINATION RESISTOR

150 OHM

-

-OFF

- 82 OHM

10930-I

If this is the last remote I/O adapter on the RIO link in a PLC system, you must use a terminating resistor to terminate both ends of the remote I/O link (scanner end and last block end). The size of the terminator is determined by the system configuration.

Older configurations can use a 150 ohm resistor at both ends. With newer devices that can support it, you can use an 82 ohm termination resistor at both ends. The 82 ohm terminators provide “extended node” capability which allows you to have up to 32 physical devices on the RIO link. (The number of logical racks capable of being addressed by the scanner is not affected.)

2-14

A

TTENTION:

Devices that are operating at 230.4K baud must

have 82 ohm terminators in place for proper operation.

Chapter 2

2.4A

Installing Block I/O

Compatibility

of 1771 I/O Products with Extended Node Operation

Certain products are not compatible with extended node capabilities obtained with the use of 82 ohm terminators. The following table lists those products that are not compatible.

Device Series

Scanners -1771-SN All

1772-SD All 1772-SD2 All

1

1775-SR 1775-S4A 1775-S4B

Adapters - 1771-AS All

1771-ASB Series A 1771-DCM All

Miscellaneous - 1771-AF All

1771-AF1 All

1

When

using PLC-3 programmable controllers, you must use a 1775-S5 or -SR5 scanner module. or -S4B scanner modules.

1 1

Do not use

All All All

1775-SR, -S4A

Fusing

Summary

1791 high-density block I/O modules (64 and 128 input/output) have internal fusing. Each group of 16 output points is protected by a 5.0A fuse. These fuses protect the user output devices. They do not protect each individual output from overload. It is recommended that individual outputs be fused externally to protect the individual output circuit.

Catalog Number Voltage

1791-IOBX

1791-IOVX

24V dc

Maximum Output Rating at:

o

C 60oC

30

300mA per point

2.4A continuous per 16 point group

continuous per 16 point group

maximum surge current 1.0A for 25ms

1 pulse per second maximum

Maximum Surge Current

Consult the factory for fuse recommendations.

In this chapter you learned how to physically mount your block I/O, make power wiring connections, how to make the input/output wiring connections to the block, and how to terminate the remote I/O link.

2-15

Chapter 2

Installing Block I/O

(This page left intentionally blank.)

2-16

Chapter

Configuring Your Block I/O

3

Chapter

Objectives

Setting the Configuration Switches

In this chapter you will learn how to configure your block I/O when used with PLC family programmable controllers. This includes the following:

setting the configuration switches addressing the block I/O

To learn how to configure your block I/O when used with SLC 500 processors, refer to the publication for the 1747-SN Remote I/O Scanner Module.

Each block I/O module has multiple-position switches for setting:

transmission (baud) rate - used to set the communication rate chosen

for the remote I/O link

last state - when last state is enabled, a processor reset will keep the

outputs in their present (last) state; when last state is disabled, the outputs will reset

pr

ocessor r

the programmable controller cannot automatically start up the module’s communications if the power has been cycled to either the module or the programmable controller. Press Input and Output pushbuttons simultaneously to reset PRL.

estart lockout (PRL) - when PRL is enabled (switch 4 on),

last rack - used to identify if the module contains the highest numbered

I/O group for the associated rack number

I/O group address - used to identify which module group (0-3 or 4-7)

the module should assign to its inputs/outputs

rack address - used to select the rack address of the module

RIO termination resistor - used to connect an internal resistor

(82 ohm, 150 ohm, or no resistor) across LINE 1 and 2 on the remote I/O terminals

These switches are all accessible on the front or top of the module, as shown in Figure 3.1.

3-1

Chapter 3

Configuring Your Block I/O

Figure 3.1 Switch

Setting Locations (1791-IOBX shown)

Configuration Switch

Rack Address Switch

Termination Resistor Switch

COM 00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC COM

00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17 NC NC

COM 00

01

02

03 04

05 06

07 10

11 12

13 14

15 16

17 NC

COM 00

01

02

03

04

05 06

07 10

11 12

13 14

15 16

17 NC NC

87654321

CONFIGURATION

SWITCHES

RACK ADDR

POWER ACTIVE COMM FUSE

INPUT

1791-IOBX

128

24V DC DISTRIBUTED

I/O MODULE

64 24VDC SINK INPUTS

64 24VDC SOURCE OUTPUTS

CONFIGURATION SWITCHES

BAUD

GROUP

RATE

57.6K BPS

115.2KBPS

230.4KBPS UNUSED

PRL

NO OFF YES ON

No.

1 2

OFF OFF ON OFF OFF ON ON ON

LAST RACK

4

NO OFF YES ON

DISPLAY

SELECT

POINT

5

OUTPUT

LAST STATE

LATCH RESET

NOT USED

GROUP

Termination

I/O

0 to 3 4 to 7

3

OFF ON

7 8

6

OFF ON

Resistor

150 Ohm Off 82 Ohm

GROUP No.

+VDC

03 05 07 11 13 15 17

COM

+VDC

03 05 07

11 13 15 17

COM

+VDC

03 05 07 11 13 15 17

+VDC

03 05 07

11 13 15 17

COM

L

01

02 04 06 10 12 14 16

00 L

01

02 04 06 10 12 14 16

NC

00

01

02 04 06 10 12 14 16

COM

00

01

02 04 06 10 12 14 16

NC

00

3-2

10931-I

Rack Address Switch

(Refer to Table 3.A)

ON

134256

Figure 3.2 Configuration

Chapter 3

Configuring Your Block I/O

Switch Settings (PLC designations shown)

COM

00 02 04 06 10 12 14

01 03

05

RACK ADDR

07 11 13 15

8

87654321

CONFIGURATION

SWITCHES

Configuration Switch (Top View of Switch)

7

654321

ON

+VDC

03 05 07 11 13 15

00

L 01

02 04 06 10 12 14

Not Used -

set to off

Group

L RACK

I/O

0 to 3 4 to 7

AST

7 8

6

OFF ON

5

NO OFF YES ON

Last Rack Switch 5

PLC-2

- When module

OFF

numbered I/O group for the associated rack number

ON

- When module

numbered I/O group for the associated rack number

PLC-3

switch must always be set to “OFF

This

PLC-5

This switch not used.

does not

contain the highest

does

contain the highest

.”

3

OFF ON

OFF ON OFF ON

1 2

OFF OFF ON ON

Last

State Switch 3

CAUTION:

BAUD

R

ATE

57.6kbps

115.2kbps

230.4kbps Unused

LAST

STATE

Latch Reset

Set switch 3 to the ON position to deenergize outputs wired to this module when a fault is detected. If switch 3 is set to the OFF position, outputs connected to this module remain in their last state when a fault

. .

Disabled OFF Enabled ON

PRL

4

Processor Restart Lockout (PRL) Switch 4

occurs and machine motion may continue after fault detection.

-

When PRL is enabled (on), the programmable controller cannot automatically start up the module’

s communications if the power has been cycled to either the module or the programmable controller

10932-I

3-3

Chapter 3

Rack

Configuring Your Block I/O

T

able 3.A

Rack

Address Switch Settings

1747-SN Number

Rack Rack 1 Rack 2 Rack 2 Rack 1 Rack 1 Rack 1 Rack 2 Rack 3 Rack 3 Rack 2 Rack 2 Rack 2 Rack 3 Rack 4 Rack 4 Rack 3 Rack 3 Rack 3

1771-SN Number

0

Rack 1 Rack 1

Rack 5 Rack 5 Rack 4 Rack 4 Rack 4 Rack 6 Rack 6 Rack 5 Rack 5 Rack 5 Rack 7 Rack 7 Rack 6 Rack 6 Rack 6

PLC-2

Number

PLC-5

Number

Not V

Rack 7 Rack 7 Rack 7 Rack 10 Rack 10 Rack 10 Rack 1 Rack 12 Rack 12 Rack 12 Rack 13 Rack 13 Rack 13 Rack 14 Rack 14 Rack 14 Rack 15 Rack 15 Rack 15 Rack 16 Rack 16 Rack 16 Rack 17 Rack 17 Rack 17 Rack 20 Rack 20 Rack 20 Rack 21 Rack 21 Rack 21 Rack 22 Rack 22 Rack 22 Rack 23 Rack 23 Rack 23 Rack 24 Rack 24 Rack 24 Rack 25 Rack 25 Rack 25 Rack 26 Rack 26 Rack 26 Rack 27 Rack 27 Rack 27

PLC-5/250

Number

alid

1

Number

Rack 0 Rack 0

Rack 1

1

Rack 30 Rack 30 Rack 31 Rack 31 Rack 32 Rack 32 Rack 33 Rack 33 Rack 34 Rack 34 Rack 35 Rack 35 Rack 36 Rack 36 Rack 37 Rack 37

PLC-3

Rack Address Switch Position

6 5 4 3 2 1

0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 1 1 0 0 0 0 1 1 1 0 0 1 0 0 0

Rack 1

1 0 0 1 0 0 1

0 0 1 0 1 0 0 0 1 0 1 1 0 0 1 1 0 0 0 0 1 1 0 1 0 0 1 1 1 0 0 0 1 1 1 1 0 1 0 0 0 0 0 1 0 0 0 1 0 1 0 0 1 0 0 1 0 0 1 1 0 1 0 1 0 0 0 1 0 1 0 1 0 1 0 1 1 0 0 1 0 1 1 1 0 1 1 0 0 0 0 1 1 0 0 1 0 1 1 0 1 0 0 1 1 0 1 1 0 1 1 1 0 0 0 1 1 1 0 1 0 1 1 1 1 0

0 1 1 1 1 1 Rack 40 Rack 41 Rack 42 Rack 43 Rack 44 Rack 45 Rack 46 Rack 47 Rack 50 Rack 51 Rack 52 Rack 53 Rack 54 Rack 55 Rack 56 Rack 57 Rack 60 Rack 61 Rack 62

1 0 0 0 0 0

1 0 0 0 0 1

1 0 0 0 1 0

1 0 0 0 1 1

1 0 0 1 0 0

1 0 0 1 0 1

1 0 0 1 1 0

1 0 0 1 1 1

1 0 1 0 0 0

1 0 1 0 0 1

1 0 1 0 1 0

1 0 1 0 1 1

1 0 1 1 0 0

1 0 1 1 0 1

1 0 1 1 1 0

1 0 1 1 1 1

1 1 0 0 0 0

1 1 0 0 0 1

1 1 0 0 1 0

3-4

Chapter 3

Configuring Your Block I/O

1747-SN

Rack

Number

Rack address 77 is an illegal configuration. PLC-5/1 PLC-5/15 and PLC-5/20 processors can scan racks 01-03. PLC-5/25 and PLC-5/30 processors can scan racks 01-07. PLC-5/40 and PLC-5/40L processors can scan racks 01-17. PLC-5/60 and PLC-5/60L processors can scan racks 01-27. PLC-5/250 processors can scan racks 00-37. PLC-3 processors can scan racks 00-76.

1771-SN

Rack

Number

1 processors can scan rack 03.

PLC-2

Rack

Number

PLC-5

Rack

Number

Each block uses 4 words of output image table memory and 4 words of input image table memory. Each block occupies 1/2 rack of data table, with 2 blocks comprising 1 logical rack. Image table usage for one assigned rack number is shown in Figure 3.3. An example of image table usage is shown in Figure 3.4.

PLC-5/250

Rack

Number

PLC-3

Rack

Number

Rack

63 Rack 64 Rack 65 Rack 66 Rack 67 Rack 70 Rack 71 Rack 72 Rack 73 Rack 74 Rack 75 Rack 76

Not V

alid 1 1 1 1 1 1

Rack Address Switch Position

1 1 0 0 1 1 1 1 0 1 0 0 1 1 0 1 0 1 1 1 0 1 1 0 1 1 0 1 1 1 1 1 1 0 0 0 1 1 1 0 0 1 1 1 1 0 1 0 1 1 1 0 1 1 1 1 1 1 0 0 1 1 1 1 0 1 1 1 1 1 1 0

123456

1

Rack 1

2 1791-IOBX or 1791-IOVX per rack 1st 1/2 rack = module group 0-3 2nd 1/2 rack = module group 4-7

Figure 3.3 I/O

2

1791-IOVX1791-IOBX

Image T

able for One Assigned Rack Number

Block 1

Inputs

Block 2

Inputs

Block 1

Outputs

Block 2

Outputs

0 1 2 3 4 5 6 7

Input Image

710

Output Image

710

017

10933-I

3-5

Chapter 3

Exampl

Configuring Your Block I/O

Figure 3.4 Input Table Usage Example for One Starting I/O Group with 1791-IOBX and -IOVX

Starting

I/O Group

0

(Configuration Switch 6 = OFF)

110 111

112 113

010 011

012 013

T

ype of I/O

1 = Input 0 = Output

I/O Rack Number

17 16 15 14 13 12 17 16 15 14 13 12

e

11100

I/O Bit

I/O Group Number

111076543210 11107654321

0

Input

0

Output Image

0

Image

Starting

I/O Group

4

(Configuration Switch 6 = ON)

114 115

116 117

014 015

016 017

17 16 15 14 13 12 17 16 15 14 13 12

17 16 15 14 13 12

111076543210 11107654321

0

111076543210 11107654321

0

111076543210 11107654321

0

111076543210 11107654321

0

Input

Image

Output Image

10934-I

3-6

T

able 3.B

1791-IOBX

Chapter 3

Configuring Your Block I/O

Input T

erminal Addressing for Groups 0 and 1 (TRM1)

Terminal

Number

Input

Assignment

Group 0

Program Address

Terminal

Number

Input

Assignment

Group 1

1 Common A 19 Common B 2 Input 00 1XY00 20 Input 00 1X(Y+1)00 3 Input 01 1XY01 21 Input 01 1X(Y+1)01 4 Input 02 1XY02 22 Input 02 1X(Y+1)02 5 Input 03 1XY03 23 Input 03 1X(Y+1)03 6 Input 04 1XY04 24 Input 04 1X(Y+1)04 7 Input 05 1XY05 25 Input 05 1X(Y+1)05 8 Input 06 1XY06 26 Input 06 1X(Y+1)06

9 Input 07 1XY07 27 Input 07 1X(Y+1)07 10 Input 10 1XY10 28 Input 10 1X(Y+1)10 11 Input 11 1XY11 29 Input 11 1X(Y+1)11 12 Input 12 1XY12 30 Input 12 1X(Y+1)12 13 Input 13 1XY13 31 Input 13 1X(Y+1)13 14 Input 14 1XY14 32 Input 14 1X(Y+1)14 15 Input 15 1XY15 33 Input 15 1X(Y+1)15 16 Input 16 1XY16 34 Input 16 1X(Y+1)16 17 Input 17 1XY17 35 Input 17 1X(Y+1)17 18 N.C. 36 N.C.

37 N.C.

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

2

1

INPUT

COM

00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

NC

COM

00

02

04

06

10

12

14

16

NC

0

17

01

03

05

07

11

13

15

1

17

NC

36 37

10935-I

3-7

Chapter 3

Configuring Your Block I/O

T

able 3.C

1791-IOBX Input Terminal Addressing for Groups 2 and 3 (TRM2)

Terminal

Number

Input

Assignment

Group 2

Program Address

Terminal

Number

1 Common C 19 Common D

2 Input 00 1X(Y+2)00 20 Input 00 1X(Y+3)00

3 Input 01 1X(Y+2)01 21 Input 01 1X(Y+3)01

4 Input 02 1X(Y+2)02 22 Input 02 1X(Y+3)02

5 Input 03 1X(Y+2)03 23 Input 03 1X(Y+3)03

6 Input 04 1X(Y+2)04 24 Input 04 1X(Y+3)04

7 Input 05 1X(Y+2)05 25 Input 05 1X(Y+3)05

8 Input 06 1X(Y+2)06 26 Input 06 1X(Y+3)06

9 Input 07 1X(Y+2)07 27 Input 07 1X(Y+3)07 10 Input 10 1X(Y+2)10 28 Input 10 1X(Y+3)10 11 Input 11 1X(Y+2)11 29 Input 11 1X(Y+3)11 12 Input 12 1X(Y+2)12 30 Input 12 1X(Y+3)12 13 Input 13 1X(Y+2)13 31 Input 13 1X(Y+3)13 14 Input 14 1X(Y+2)14 32 Input 14 1X(Y+3)14 15 Input 15 1X(Y+2)15 33 Input 15 1X(Y+3)15 16 Input 16 1X(Y+2)16 34 Input 16 1X(Y+3)16 17 Input 17 1X(Y+2)17 35 Input 17 1X(Y+3)17 18 N.C. 36 N.C.

37 N.C.

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Input

Assignment

Group 3

Program Address

2

1

COM 00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

NC

COM 00

02

04

06

10

12

14

16

17

01

03

05

07

11

13

15

17

2

GROUP

2

3

No.

3-8

NC

36 37

10936-I

T

able 3.D

1791-IOBX

Output T

Chapter 3

Configuring Your Block I/O

erminal Addressing for Groups 0 and 1 (TRM3)

Terminal

Number

Output

Assignment

Group 1

Program Address

Terminal

Number

Output

Assignment

Group 0

1 N.C. 20 Common A

2 Common B 21 Output 17 0XY17

3 Output 17 0X(Y+1)17 22 Output 16 0XY16

4 Output 16 0X(Y+1)16 23 Output 15 0XY15

5 Output 15 0X(Y+1)15 24 Output 14 0XY14

6 Output 14 0X(Y+1)14 25 Output 13 0XY13

7 Output 13 0X(Y+1)13 26 Output 12 0XY12

8 Output 12 0X(Y+1)12 27 Output 11 0XY11

9 Output 11 0X(Y+1)11 28 Output 10 0XY10 10 Output 10 0X(Y+1)10 29 Output 07 0XY07 11 Output 07 0X(Y+1)07 30 Output 06 0XY06 12 Output 06 0X(Y+1)06 31 Output 05 0XY05 13 Output 05 0X(Y+1)05 32 Output 04 0XY04 14 Output 04 0X(Y+1)04 33 Output 03 0XY03 15 Output 03 0X(Y+1)03 34 Output 02 0XY02 16 Output 02 0X(Y+1)02 35 Output 01 0XY01 17 Output 01 0X(Y+1)01 36 Output 00 0XY00 18 Output 00 0X(Y+1)00 37 VDC A 19 VDC B

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

OUTPUT

+VDC

0

+VDC

1

03

05

07

11

13

15

17

L 01

03

05

07

11

13

15

17

COM

NC

L 01

COM

00

02

04

06

10

12

14

16

3637

00

02

04

06

10

12

14

16

2

1

10937-I

3-9

Chapter 3

Configuring Your Block I/O

T

able 3.E

1791-IOBX Output Terminal Addressing for Groups 2 and 3 (TRM4)

Terminal

Number

Output

Assignment

Group 3

Program Address

Terminal

Number

Output

Assignment

Group 2

1 N.C. 20 Common C

2 Common D 21 Output 17 0X(Y+2)17

3 Output 17 0X(Y+3)17 22 Output 16 0X(Y+2)16

4 Output 16 0X(Y+3)16 23 Output 15 0X(Y+2)15

5 Output 15 0X(Y+3)15 24 Output 14 0X(Y+2)14

6 Output 14 0X(Y+3)14 25 Output 13 0X(Y+2)13

7 Output 13 0X(Y+3)13 26 Output 12 0X(Y+2)12

8 Output 12 0X(Y+3)12 27 Output 11 0X(Y+2)11

9 Output 11 0X(Y+3)11 28 Output 10 0X(Y+2)10 10 Output 10 0X(Y+3)10 29 Output 07 0X(Y+2)07 11 Output 07 0X(Y+3)07 30 Output 06 0X(Y+2)06 12 Output 06 0X(Y+3)06 31 Output 05 0X(Y+2)05 13 Output 05 0X(Y+3)05 32 Output 04 0X(Y+2)04 14 Output 04 0X(Y+3)04 33 Output 03 0X(Y+2)03 15 Output 03 0X(Y+3)03 34 Output 02 0X(Y+2)02 16 Output 02 0X(Y+3)02 35 Output 01 0X(Y+2)01 17 Output 01 0X(Y+3)01 36 Output 00 0X(Y+2)00 18 Output 00 0X(Y+3)00 37 VDC C 19 VDC D

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

GROUP

2

No.

2

3

+VDC

L

03

05

07

11

13

15

17

+VDC

L

01

03

05

07

11

13

15

17

COM

NC

3637

00

01

02

04

06

10

12

14

16

COM

00

02

04

06

10

12

14

16

3-10

2

1

10938-I

T

able 3.F

1791-IOVX

Chapter 3

Configuring Your Block I/O

Input T

erminal Addressing for Groups 0 and 1 (TRM1)

Terminal

Number

Input

Assignment

Group 0

Program Address

Terminal

Number

Input

Assignment

Group 1

1 VDC A 19 VDC B

2 Input 00 1XY00 20 Input 00 1X(Y+1)00

3 Input 01 1XY01 21 Input 01 1X(Y+1)01

4 Input 02 1XY02 22 Input 02 1X(Y+1)02

5 Input 03 1XY03 23 Input 03 1X(Y+1)03

6 Input 04 1XY04 24 Input 04 1X(Y+1)04

7 Input 05 1XY05 25 Input 05 1X(Y+1)05

8 Input 06 1XY06 26 Input 06 1X(Y+1)06

9 Input 07 1XY07 27 Input 07 1X(Y+1)07 10 Input 10 1XY10 28 Input 10 1X(Y+1)10 11 Input 11 1XY11 29 Input 11 1X(Y+1)11 12 Input 12 1XY12 30 Input 12 1X(Y+1)12 13 Input 13 1XY13 31 Input 13 1X(Y+1)13 14 Input 14 1XY14 32 Input 14 1X(Y+1)14 15 Input 15 1XY15 33 Input 15 1X(Y+1)15 16 Input 16 1XY16 34 Input 16 1X(Y+1)16 17 Input 17 1XY17 35 Input 17 1X(Y+1)17 18 N.C. 36 N.C.

37 N.C.

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

2

1

INPUT

+VDC

00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

NC

+VDC

00

02

04

06

10

12

14

16

NC

0

17

01

03

05

07

11

13

15

1

17

NC

36 37

10939-I

3-11

Chapter 3

Configuring Your Block I/O

T

able 3.G

1791-IOVX Input T

erminal Addressing for Groups 2 and 3 (TRM2)

Terminal

Number

Input

Assignment

Group 2

Program Address

Terminal

Number

Input

Assignment

Group 3

1 VDC C 19 VDC D

2 Input 00 1X(Y+2)00 20 Input 00 1X(Y+3)00

3 Input 01 1X(Y+2)01 21 Input 01 1X(Y+3)01

4 Input 02 1X(Y+2)02 22 Input 02 1X(Y+3)02

5 Input 03 1X(Y+2)03 23 Input 03 1X(Y+3)03

6 Input 04 1X(Y+2)04 24 Input 04 1X(Y+3)04

7 Input 05 1X(Y+2)05 25 Input 05 1X(Y+3)05

8 Input 06 1X(Y+2)06 26 Input 06 1X(Y+3)06

9 Input 07 1X(Y+2)07 27 Input 07 1X(Y+3)07 10 Input 10 1X(Y+2)10 28 Input 10 1X(Y+3)10 11 Input 11 1X(Y+2)11 29 Input 11 1X(Y+3)11 12 Input 12 1X(Y+2)12 30 Input 12 1X(Y+3)12 13 Input 13 1X(Y+2)13 31 Input 13 1X(Y+3)13 14 Input 14 1X(Y+2)14 32 Input 14 1X(Y+3)14 15 Input 15 1X(Y+2)15 33 Input 15 1X(Y+3)15 16 Input 16 1X(Y+2)16 34 Input 16 1X(Y+3)16 17 Input 17 1X(Y+2)17 35 Input 17 1X(Y+3)17 18 N.C. 36 N.C.

37 N.C.

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

2

1

+VDC

00

01

02

03

04

05

06

07

10

11

12

13

14

15

17

03

05

07

11

13

15

17

NC

2

GROUP

3

No.

16

NC

+VDC

00

01

02

04

06

10

12

14

16

NC

3-12

36 37

10940-I

T

able 3.H

Terminal

Number

Output

Assignment

Group 1

Program Address

1791-IOVX

Terminal

Number

Output T

Output

Assignment

Group 0

erminal Addressing for Groups 0 and 1 (TRM3)

1 N.C. 20 Common A

2 Common B 21 Output 17 0XY17

3 Output 17 0X(Y+1)17 22 Output 16 0XY16

4 Output 16 0X(Y+1)16 23 Output 15 0XY15

5 Output 15 0X(Y+1)15 24 Output 14 0XY14

6 Output 14 0X(Y+1)14 25 Output 13 0XY13

7 Output 13 0X(Y+1)13 26 Output 12 0XY12

8 Output 12 0X(Y+1)12 27 Output 11 0XY11

9 Output 11 0X(Y+1)11 28 Output 10 0XY10 10 Output 10 0X(Y+1)10 29 Output 07 0XY07 11 Output 07 0X(Y+1)07 30 Output 06 0XY06 12 Output 06 0X(Y+1)06 31 Output 05 0XY05 13 Output 05 0X(Y+1)05 32 Output 04 0XY04 14 Output 04 0X(Y+1)04 33 Output 03 0XY03 15 Output 03 0X(Y+1)03 34 Output 02 0XY02 16 Output 02 0X(Y+1)02 35 Output 01 0XY01 17 Output 01 0X(Y+1)01 36 Output 00 0XY00 18 Output 00 0X(Y+1)00 37 VDC A 19 VDC B

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

Chapter 3

Configuring Your Block I/O

37

OUTPUT

+VDC

00

L

01

02

03

04

05

06

07

10

11

12

13

14

15

17

+VDC

01

03

05

07

11

13

15

17

-COM

NC

16

-COM

00

L

02

04

06

10

12

14

16

0

1

36

12

10941-I

3-13

Chapter 3

Configuring Your Block I/O

T

able 3.I

1791-IOVX Output Terminal Addressing for Groups 2 and 3 (TRM4)

Terminal

Number

Output

Assignment

Group 3

Program Address

Terminal

Number

Output

Assignment

Group 2

1 N.C. 20 Common C

2 Common D 21 Output 17 0X(Y+2)17

3 Output 17 0X(Y+3)17 22 Output 16 0X(Y+2)16

4 Output 16 0X(Y+3)16 23 Output 15 0X(Y+2)15

5 Output 15 0X(Y+3)15 24 Output 14 0X(Y+2)14

6 Output 14 0X(Y+3)14 25 Output 13 0X(Y+2)13

7 Output 13 0X(Y+3)13 26 Output 12 0X(Y+2)12

8 Output 12 0X(Y+3)12 27 Output 11 0X(Y+2)11

9 Output 11 0X(Y+3)11 28 Output 10 0X(Y+2)10 10 Output 10 0X(Y+3)10 29 Output 07 0X(Y+2)07 11 Output 07 0X(Y+3)07 30 Output 06 0X(Y+2)06 12 Output 06 0X(Y+3)06 31 Output 05 0X(Y+2)05 13 Output 05 0X(Y+3)05 32 Output 04 0X(Y+2)04 14 Output 04 0X(Y+3)04 33 Output 03 0X(Y+2)03 15 Output 03 0X(Y+3)03 34 Output 02 0X(Y+2)02 16 Output 02 0X(Y+3)02 35 Output 01 0X(Y+2)01 17 Output 01 0X(Y+3)01 36 Output 00 0X(Y+2)00 18 Output 00 0X(Y+3)00 37 VDC C 19 VDC D

Where: X = Rack Number (1, 2, 3 ...)

Y = Module Group (0-7)

Program Address

GROUP

2

No.

2

3

+VDC

01

03

05

07

11

13

15

17

-COM

+VDC

01

03

05

07

11

13

15

17

-COM

NC

3637

00

L

02

04

06

10

12

14

16

00

L

02

04

06

10

12

14

16

Summary

3-14

2

1

10942-I

In this chapter you learned how to set the configuration switches and the rack addresses for input and output terminals.

Troubleshooting

Chapter

4

Chapter

Objectives

Indicators

In this chapter you will learn about the indicators on the block I/O module, and how to use them to troubleshoot the unit.

Each block I/O module has indicators (Figure 4.1) which provide indication of specific functions. Each module has the following:

Status Indicators - Indicators are provided for power, active, communication and fuse blown indications. An LED array provides input/output status.

POWER Indicator -

- green -on continuously if customer voltage is present; off if power is not applied or there is an internal power supply problem.

ACTIVE Indicator -

- red if the CPU is not running; green if the CPU is operating correctly.

COMM Indicator - indicates the status of the RIO link.

- green when communication is correctly established; off when communication is not established; flashing when programmable controller is in PROG mode.

FUSE Indicator - indicates the status of the 4 output fuses.

- off if all 4 fuses are intact; red if any one of the fuses opens.

The I/O status array is an 8 by 8 array of 64 LEDs capable of displaying the status of 32 inputs and 32 outputs at any one time. Pushbuttons are provided to toggle the display between the lower 32 bits and the upper 32 bits.

Refer to Table 4.A below for status indications reported by the indicators.

4-1

Chapter 4

Troubleshooting

Figure 4.1 Indicators shown)

on the 1791-IOBX and -IOVX Block I/O Modules (PLC labels

POWER ACTIVE

COMM

FUSE

INPUT

0:1 2:3

COM 00

01

02

03

04

05

06

07

10

11

12

13

14

15

16

17

NC COM

00

01

02

03

04

05

06

07

10

11

12

LED

RACK ADDR

87654321

POWER ACTIVE COMM FUSE

0:1 2:3GROUP

CONFIGURATION

SWITCHES

DISPLAY

SELECT

INPUT

OUTPUT

+VDC

03 05 07 11 13 15 17

COM

+VDC

03 05 07

11

00

01

02 04 06 10 12 14 16

00

01

02 04 06 10

4-2

00 01 02 03 04 05 06 07

INPUT

10 11 12 13 14 15 16 17

DISPLAY SELECT

10

00

11

01

12

02

13

03

14

04

15

05

16

06

17

07

OUTPUT

10

00

10

00

11

01

11

01

12

02

12

02

13

03

13

03

14

04

14

04

15

05

15

05

16

06

16

06

17

07

17

07

indicates LED off - lower 32 bits are displayed indicates LED on - upper 32 bits are displayed

Press Input and Output pushbuttons simultaneously to reset Processor Restart Lockout.

10943-I

Chapter 4

P WER

ACTIVE

FUSE

Troubleshooting

T

able 4.A

Troubleshooting

Indication Probable Cause Corrective Action

Chart

POWER (green)

COMM (green)

(green)

ACTIVE (green/red)

FUSE (red)

Green I/O status on/off

Off

Solid green

Off

Flashing green

Green

Red

Off

Normal indication None required

No 24V dc power connected, or hardware fault. Check 24V dc power to block

Normal indication - module is communicating with the programmable controller

No communication with adapter, scanner etc.

Reset command (or output disable bit for SLC) has been issued by processor, scanner or adapter. SLC or programmable controller not in run mode.

Normal indication None

Internal CPU fault Return module for repair

One or more fuses are open Replace blown fuse

Normal indication None required

None required

Check that power LED is on. Make sure that proper number of blocks are configured.

Check program. Correct as necessary. Place in run mode.

Replacing

a Fuse

The block I/O module has one fuse for each group of outputs. To replace a fuse, proceed as follows.

1. Remove power to the block I/O module.

TTENTION:

A

Remove power to the block I/O module before

attempting to replace the fuse.

Failure to remove power from the block I/O module could cause injury or equipment damage due to possible

unexpected operation.

Failure to remove power from the module could cause module damage, degradation of performance or injury.

2. Remove the 5 screws securing the cover to the block I/O module.

3. Locate and remove the blown fuse.

4-3

Chapter 4

Troubleshooting

4. Replace the blown fuse with a 5.0A slow blow fuse.

5. Reinstall cover and secure with 5 screws removed in step 2.

6. Reapply power to the module.

Summary

In this chapter you learned what the LED indicators represent, and how to interpret them.

4-4

Specifications

General Specifications

Appendix

A

External power

Power Dissipation 25.2 Watts (maximum); 15.2 Watts (typical) Thermal Dissipation 86.2 BTU/hr (maximum); 51.9 BTU/hr (typical) Remote I/O Isolation 850V dc (transformer) for 1 second

Interconnect cable length PLC or SLC

Cable requirements RIO – Belden 9463

Dimensions

Conductors Wire Size

Rockwell Automation 1791-I0VX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual