Micromod 1732N, 1733N User Manual

ICN Mini Link/External User’s Guide

1733N Model A – Mini Link/EXT (Version 1)
1732N Model A – ICN Interface Board (Version 1)

MicroMod Automation, Inc.

The Company

MicroMod Automation is dedicated to improving customer efficiency by providing the most cost-effective, application-specific process solutions
available. We are a highly responsive, application-focused company with years of expertise in control systems design and implementation.

We are committed to teamwork, high quality manufacturing, advanced technology and unrivaled service and support.

The quality, accuracy and performance of the Company's products result from over 100 years experience, combined with a continuous
program of innovative design and development to incorporate the latest technology.

Use of Instructions

Ì Warning. An instruction that draws attention to the risk of
injury or death.

 Note. Clarification of an instruction or additional

information.

q Caution. An instruction that draws attention to the risk of
the product, process or surroundings.

Although Warning hazards are related to personal injury, and Caution hazards are associated with equipment or property damage, it
must be understood that operation of damaged equipment could, under certain operational conditions, result in degraded process
system performance leading to personal injury or death. Therefore, comply fully with all Warning and Caution notices.

Information in this manual is intended only to assist our customers in the efficient operation of our equipment. Use of this manual for
any other purpose is specifically prohibited and its contents are not to be reproduced in full or part without prior approval of MicroMod
Automation, Inc.

Licensing, Trademarks and Copyrights

MOD 30 and MOD 30ML are trademarks of MicroMod Automation, Inc.
MODBUS is a trademark of Modicon Inc.

Health and Safety

To ensure that our products are safe and without risk to health, the following points must be noted:

The relevant sections of these instructions must be read carefully before proceeding.

1. Warning Labels on containers and packages must be observed.

2. Installation, operation, maintenance and servicing must only be carried out by suitably trained personnel and in accordance with the information
given or injury or death could result.

3. Normal safety procedures must be taken to avoid the possibility of an accident occurring when operating in conditions of high

4. pressure and/or temperature.

5. Chemicals must be stored away from heat, protected from temperature extremes and powders kept dry. Normal safe handling procedures must be
used.

6. When disposing of chemicals, ensure that no two chemicals are mixed.

Safety advice concerning the use of the equipment described in this manual may be obtained from the Company address on the back
cover, together with servicing and spares information.

i Information. Further reference for more detailed
information or technical details.

All software, including design, appearance, algorithms and source

codes, is copyrighted by MicroMod Automation, inc. and is owned by

MicroMod Automation or its suppliers.

IB-23C004

CONTENTS

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CONTENTS

Page

SECTION 1 - INTRODUCTION

1.1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 EXPLANATION OF SERIAL AND CATALOG NUMBER . . . . . . . . . . . . . . . . . . 1-3

1.3 PRODUCT DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.3.1 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1.3.2 1732N ICN Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1.4 TECHNICAL SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1.5 RELATED DOCUMENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

SECTION 2 - INSTALLATION

2.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 SERIAL PORT CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.3 JUMPER SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3.1 Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2.3.2 ICN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.3 LOCATING MINI LINK/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

SECTION 3 - TROUBLESHOOTING THE MINI LINK

3.1 NO RESPONSE FROM LINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 PARITY, FRAMING OR OVERRUN ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.3 NO RESPONSE FROM THE FIELD INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . . 3-1

APPENDIX A - JUMPERS AND SWITCHES
APPENDIX B - CONNECTOR DESCRIPTIONS

ILLUSTRATIONS

Figure Page

1-1 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2-1 Mounting Dimensions, 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

A-1 Switch and Jumper Locations for 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . A-1

A-2 Switch and Jumper Locations for ICN0 and ICN1 Interface Boards . . . . . . . . . . . A-2

TABLES

Table Page

2-1 External Mini Link Serial Port A Baud Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-2 External Mini Link Serial Port B Baud Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

A-1 Listing of Jumpers and Switches for 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . A-1

A-2 Listing of Jumpers and Switches for ICN0 and ICN1 Interface Boards . . . . . . . . . A-2

B-1 Mini Link/EXT RS-232 Port A (DB9) Connector Pinout . . . . . . . . . . . . . . . . . . . B-1

B-2 Mini Link/EXT RS-232 Port B (DB25) Connector Pinout . . . . . . . . . . . . . . . . . . . B-1

B-3 Mini Link/EXT ICN0 and ICN1 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . B-1

i

IB-23C004

CONTENTS

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ii

1.1 DESCRIPTION

The 1733N Mini Link/EXT (External) with 1732N ICN Interface Board, Figure 1-1, provides
a general purpose serial interface to MOD 30 and MODCELL instruments via the
Instrument Communications Network (ICN). The 1733N Mini Link/EXT supports one ICN
and the 1732N ICN Interface Board supports a second ICN. The External Mini Link
provides intelligent buffers that enable the operation of higher level devices (such as
personal or other computers) by:

• Assembling display and tuning information for a number of instruments and storing the
data in block format. This relieves the host from executing individual requests and
improves the efficiency of the communications.

• Permitting the host device to download and upload instrument configuration
information. This enables instrument configuration to be performed at a central
location using a personal computer that can easily display, manipulate and document
data.

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INTRODUCTION

SECTION 1

INTRODUCTION

• Permitting limited peer-to-peer communications between ICNs.

• Providing diagnostic checks for message validity resulting in secure general purpose
serial interfaces to the ICN.

• Off-loading trend functions when supported by the host application software.

Figure 1-1. 1733N Mini Link/EXT

1-1

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INTRODUCTION

Physically the Mini Link/EXT is a standalone interface box with two serial port connections
for host PC communications and up to two network connections for ICN communications
to MOD 30 and MODCELL instruments. The base configuration consists of:

• Two Serial Ports
The two RS-232C serial ports (one DB9 and one DB25) have individually configurable
baud rates in the range of 300 to 19200 bps. The standard protocol is: Parity - None,
Data Length - 8 bits, Stop Bits - 1. The second serial port could be used to provide
redundant control of the instrument system.

• One Instrument Communications Network Controller
The base ICN Controller is accessed via a two-wire or three-wire connection at the
rear of the box using the three screw terminal block at the connection marked "ICN0".
Communication can be maintained between the personal computer and up to 15 field
instruments.

• Optical Isolation Between Instruments and Personal Computer
The optical isolation feature is jumper-selectable (see Section 2.3, Jumper Settings)
and provides a minimum of 3000 Vdc electrical insulation between the Instrument
Communications Network and the personal computer. THIS FEATURE IS NOT
FACTORY SET.

• External Pushbutton Reset
A 750ms reset pulse can be issued to the External Mini Link by pressing the reset
button located at the rear of the box. The button is prominently labeled "RESET".

• Front Panel Indicators
The front panel of the External Mini Link is divided into two sections labled ICN0 and
ICN1. Each section has three LED indicators as described below:

ENABLED When lit, this LED indicates that the circuit controlling the instru-

ment communications through the corresponding ICN is active and
responding properly to the main processor.

RCV This LED flashes during instrument to Mini Link/EXT digital com-

munications.

SEND This LED flashes during Mini Link/EXT to instrument digital com-

munications.

The 1733N Mini Link/EXT can be enhanced with a 1732N ICN Interface Board to provide
communications access to an additional 15 field instruments. This daughter board is
mounted to the External Mini Link board and is accessed via a two- or three-wire
connection at the rear of the box using the three-screw terminal block at the connection
marked "ICN1".

1-2

1.2 EXPLANATION OF SERIAL AND CATALOG NUMBER

The products described in this book have numbers that help identify specific features.
The general format of these numbers is described below. Specific product descriptions
follow in Section 1.3.

The serial number stamped on the product data plate consists of the catalog number and,
in some cases, a sequential identification number. The serial number, which is described
below, contains a series of single and multiple-character codes. These codes provide
specific information concerning various electrical and/or structural options. Certain
combinations are not allowed. Options and combinations are subject to change.

Sample Serial No. 1733N Z 10 1 01 A – 555

Base Number
Unused

Catalog
Number

Electrical Code
ICN Interface
Firmware
Model/Design Level

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INTRODUCTION

Sequential Identification Number

1.3 PRODUCT DESCRIPTIONS

The following product is maintained at the serial and catalog number level. The
descriptions included in this section give a brief overview of its functions and features.

1.3.1 1733N Mini Link/EXT (External)

The 1733N Mini Link/EXT is a serial interface box for communications between a personal
computer and the ICN. The central processor for the External Mini Link is the 63B09E
using an 8-bit bus and a 2 mHz dual phase clock. The processor board checks message
protocol and handles all data transfers between the ICN interface boards and intelligent
devices connected to the serial I/O board. Each ICN interface board services direct
communication with one ICN (up to 15 instruments).

The processor board keeps track of all message requests and responses. A request to
the processor board for foreground (display) data from a host device results in the data
being retrieved from the instrument ICN interface board which is automatically updated
every 250 msec. This permits the data to be sent immediately to the host. A request
from a host device for the background (tuning) data of an instrument is acknowledged with
a "wait and acknowledge" response. The instrument ICN interface board retrieves the
requested background data from the instrument and passes it to the processor board.
When all of the data for the deferred request is received by the processor board, it is
immediately transmitted to the host.

1-3

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INTRODUCTION

Catalog Number Description for 1733N

BASE NUMBER 1733N Mini Link/EXT
UNUSED Z Unused Character
ELECTRICAL CODE 10 General Purpose
ICN INTERFACE 1 One ICN

VERSION 01 Version 1
MODEL A 1st design level
Sample Number 1733NZ10101A (Product is serialized)

1.3.2 1732N ICN Interface Board

The ICN Interface Board is an ICN controller card only and is used to add a second ICN to
the 1733N when the option board was not originally specified. The central processor is
the 63B09E using an 8-bit bus and a 2 mHz dual phase clock.

2 Two ICNs

Catalog Number Description for 1732N

BASE NUMBER 1732N ICN Interface Board
UNUSED Z Unused Character
ELECTRICAL CODE 10 General Purpose
UNUSED 0 Unused Character
FIRMWARE VERSION 01 Version 1
MODEL A 1st design level
Sample Number 1732NZ10001A

1-4

1.4 TECHNICAL SUMMARY

POWER REQUIREMENTS

Input: 85 - 250 Vrms Universal Input
Output: 5V, 2A
Power Dissipation: 15W@125V
Switching Frequency: 30kHz
Detachable Power Cord (supplied cord may not be suitable for all input conditions)

North American Color Coding
Rated 105°C, 125V
Passes VW-1 Vertical Wire Flame Test
NEMA 5-15P Molded Vinyl Grounding Plug
UL/CSA Approved
Length: 6'7" (2 meters)

PHYSICAL CHARACTERISTICS

Dimensions

1733NZ10101A Length: 9.975 inches(253.35mm)

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INTRODUCTION

Width: 6.30 inches (160.02 mm)
Height: 2.75 inches (69.85 mm)

I/O Ports

Serial Port 1: J1, DB9 female
Serial Port 2: J2, DB25 female
ICN0: J3, 2-wire communications, ground
ICN1: J4, 2-wire communications, ground

ICN Connections: 18 AWG (1mm), twisted pair wire (an additional 18 AWG wire is

required to use the isolation feature as described in Section 2.3.2.).
Switches and Jumpers: See Appendix A
Microprocessor

Link Processor: 63B09E, 8 bit, 2 mHz dual phase clock
ICN Processor: 63B09E, 8 bit, 2 mHz dual phase clock

COMMUNICATIONS

Serial Port Transmission Standard: RS-232C
Serial Port Parity: None (not configurable)
Serial Port Baud Rates: 19200, 9600, 4800, 2400, 1200, 600, 300
ICN Baud Rates: 62500*, 31250

* Software support for this baud rate is currently unavailable.

1-5

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INTRODUCTION

PERFORMANCE CHARACTERISTICS

Absolute Maximum Ratings*

Temperature Under Bias: 0°C to +60°C ( 32°F to 140°F)
Storage Temperature: –40°C to +85°C (–40°F to 185°F)
Power Dissipation: 15W at 120V

Ambient Temperature Specifications

Operating: +4°C to +49°C +(40°F to +120°F)
Storage: -40°C to +74°C (–40°F to +165°F)

Relative Humidity

5 to 90% RH at 32°C

Message Queue

Active: 4
Waiting Processing: 4

ICN Interface Memory Size

RAM: 16K bytes
PROM: 32K bytes

Trend

Variables Accumulated: 100 maximum; 16-bit words
Types per Variable: Minimum, maximum, average
Resolution: 1 minute

* Maximum ratings indicate limits beyond which permanent damage may occur. Continuous operation at these

limits is not intended and should be limited to those conditions specified.

1.5 RELATED DOCUMENTATION

Additional reference information on ICN/Link communications can be found in the following
documents.

• IB-23G001 ICN Communication Link Programmers Reference Manual

• IB-23A160 ICN Communications Planning

1-6

2.1 GENERAL

Prior to installation or configuration, make sure that all power to the Mini Link/EXT is
disconnected. The Mini Link/EXT comes factory-configured as follows:

• DB9 RS-232 A (Serial Port A)

• DB25 RS-232 B (Serial Port B)

IB-23C004

INSTALLATION

SECTION 2

INSTALLATION

Baud set to 9600 bps,
No Parity (Not configurable),
8 Data Bits (Not configurable),
1 Stop Bit (Not configurable),
Clear-To-Send (/CTS) Ignored

Baud set to 19200 bps,
No Parity (Not configurable),
8 Data Bits (Not configurable),
1 Stop Bit (Not configurable),
Clear-To-Send (/CTS) Ignored

2.2 SERIAL PORT CONFIGURATION

If the factory-configured default must be changed, use the following procedure to make
changes:

1. Turn off power to the External Mini Link and disconnect the power cord.

AC power voltages are present. Failure
to turn off power will expose you to
deadly voltages.

2. Remove the four screws from the bottom of the unit.

3. Set the unit on a desk or table and carefully lift the top half of the housing straight up.

4. Locate the bank of jumpers (W1 to W18) along one side of the main board.

5. Use the tables in Section 2.3 to change the baud rates, enable optical isolation or
enable Clear-To-Send.

NOTE: The two serial ports need not operate at the same baud rate.

Make sure that only one baud rate per Serial Port is enabled. If two
or more jumpers are installed on one baud rate jumper bank, the unit
will not operate and damage to the External Mini Link and/or the target
system may occur.

DANGER

CAUTION

6. Reassemble the unit and reconnect.

2-1

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INSTALLATION

2.3 JUMPER SETTINGS

This section contains a brief description of the External Mini Link jumpers with an
application table for each. A quick reference table of all switches, jumpers, and their
functions is in Appendix A.

2.3.1 Serial Ports

The External Mini Link has two serial ports. Each serial port can be configured with an
independent baud rate and CTS signal for access by two controlling consoles.

BAUD Rates for Serial Ports 1 and 2

The External Mini Link BAUD rates may be set as shown in Table 2-1 for serial port A and
in Table 2-2 for serial port B.

BAUD

Table 2-1. External Mini Link Serial Port A Baud Rates

Jumper IN

W2 W3 W4 W5 W6 W7 W8

19200 NNNNNNY

9600 NNNNNY N
4800 NNNNY NN
2400 N N N Y NNN
1200 N N Y NNNN

600 N Y NNNNN
300 Y NNNNNN

Table 2-2. External Mini Link Serial Port B Baud Rates

Jumper IN

BAUD

W9 W10 W11 W12 W13 W14 W15

19200 Y NNNNNN

9600 N Y NNNNN
4800 N N Y NNNN

2-2

2400 N N N Y NNN
1200 NNNNY NN

600NNNNNY N
300NNNNNNY

2.3.2 ICN

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INSTALLATION

Clear-To-Send (CTS) for Serial Ports A and B

Both serial ports are outfitted with a CTS connection. In most cases, the CTS signal will
not be needed. In the event that your configuration requires a CTS signal, install jumpers
W16 and/or W17 as follows:

W16 Enables Clear To Send on Serial Port A (DB9)
W17 Enables Clear To Send on Serial Port B (DB25)

RS-232 Test Signal Jumper

Jumper W18 provides access to the 5V power plane of the External Mini Link. If Jumper
W18 is connected, the 5V signal will appear on pin 9 of the RS-232 Port A connector.
This jumper will normally be used for test purposes only.

ICN Isolation

The External Mini Link is fitted with opto-isolation components capable of providing a
minimum of 3000 VDC electrical insulation between the Instrument Communication
Network and the serial port circuitry. This option is jumper-selectable by disabling the
connection on W1 (remove this jumper to enable optical isolation). If optical isolation is
enabled, the ICN connector must be fitted with a ground wire. This third wire should be
secured to a GROUND TERMINAL on the termination panel.

External Mini Link ICN Device Address

Each device on a given Instrument Communication Network must be assigned a unique
address between 0 and 15. Normally, the External Mini Link will be assigned an address of
0 (Factory Set) with the instruments starting at 1, 2, 3, etc. In the case where the factory­set device address is not suitable, use switch U1 to change the address for the ICN0 and
ICN1 boards.

ICN Baud Rate

The factory-set baud rate for instrument communication over the ICN is 31,250 bps. This
baud rate can be increased to 62,500 bps as follows:

ICN0

J2 Installed – Selects ICN0 Baud Rate of 31,250 bps
J3 Installed – Selects ICN0 Baud Rate of 62,500 bps

ICN1

J2 Installed – Selects ICN1 Baud Rate of 31,250 bps
J3 Installed – Selects ICN1 Baud Rate of 62,500 bps

2.4 LOCATING MINI LINK/EXT

The External Mini Link can be located on any flat surface near a personal computer and
power source. Figure 2-1 shows the mounting dimensions for the External Mini Link.

2-3

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INSTALLATION

NOTE:
The detachable power cord supplied
with the 1733N is 6 ft 7 in long (2 m).

2-4

Figure 2-1. Mounting Dimensions, 1733N Mini Link/EXT

TROUBLESHOOTING THE MINI LINK

3.1 NO RESPONSE FROM LINK

A "No Response From Link" error indicates one or more of the following:

• The serial cable between the host computer and the Mini Link/EXT is incorrectly
installed. Verify connection between the host and the Mini Link/EXT as shown in the
tables in Appendix B.

• The Clear-To-Send function on the Mini Link/EXT has been enabled without enabling
the same function on the host computer. Install W16 to enable CTS on port A (DB9)
and install W17 to enable CTS on port B (DB25). Check the serial cable for proper
wiring.

• The controlling software (i.e., PC-30, etc.) has been directed to an incorrect or
unavailable serial port.

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TROUBLESHOOTING THE MINI LINK

SECTION 3

• The Mini Link/EXT has not been powered on.

• There is a communications parameter incompatibility between the External Mini Link
and the host computer. Verify that the switch and jumper settings are correct.

3.2 PARITY, FRAMING OR OVERRUN ERROR

Check the configured baud rate for the associated serial port of the Mini Link/EXT.
Confirm that the configured baud rate is the same as that expected by the controlling
software (see jumper settings for W2 - W15 in Appendix A).

3.3 NO RESPONSE FROM THE FIELD INSTRUMENTS

If communication has been established between the Mini Link/EXT and the host computer,
but the instruments on the ICN do not respond, compare your configuration to the
checklist below:

1. The ICN (+) lead of the two-wire interface is connected to the terminal block (+)
screw on the rear of the Mini Link/EXT.

2. The ICN (–) lead of the two-wire interface is connected to the terminal block (–) screw
on the rear of the Mini Link/EXT.

3. If using the isolation feature (see jumper setting for W1), there is a third wire
connected between the Mini Link/EXT terminal block GND screw and ICN ground on
the instrument termination panel.

4. The length of the ICN (including the total length of the physical two-wire bus between
each node on the ICN and the length of the instrument cables between the nodes and
the instruments) does not exceed 2000 feet or 609.6m.

3-1

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TROUBLESHOOTING THE MINI LINK

5. The ICN is appropriately terminated as described in IB-23A160.

6. If using a base configuration of the Mini Link/EXT (supporting 1 ICN) the two-wire
interface is connected to the Mini Link/EXT terminal block labeled ICN0.

7. If using a fully-configured Mini Link/EXT (supporting 2 ICNs) the two-wire interface for
the first ICN is connected to the Mini Link/EXT terminal block labeled ICN0 while the
two-wire interface for the second ICN is connected to the Mini Link/EXT terminal block
labeled ICN1.

8. Instrument address is properly configured in hardware and software.

9. Mini Link/EXT ICN device address (as set by BCD switch U1) does not conflict with
any instrument ICN device address.

NOTE: Under some circumstances, line loss and/or ground loops may cause

significant voltage differences between the External Mini Link and the field
instruments. If you expect that this may be the case, attach a ground wire
between the field instruments and the External Mini Link ICN0 or ICN1 terminal
block.

3-2

APPENDIX A

JUMPERS AND SWITCHES

IB-23C004

APPENDIX A

Figure A-1. Switch and Jumper Locations for 1733N Mini Link/EXT

Table A-1. Listing of Jumpers and Switches for 1733N Mini Link/EXT

Ref. Function Ref. Function

SW1 Reset Switch W9 Selects 19200 Baud on DB25

W1 Disable Isolation Feature W10 Selects 9600 Baud on DB25
W2 Selects 300 Baud on DB9 W11 Selects 4800 Baud on DB25
W3 Selects 600 Baud on DB9 W12 Selects 2400 Baud on DB25
W4 Selects 1200 Baud on DB9 W13 Selects 1200 Baud on DB25
W5 Selects 2400 Baud on DB9 W14 Selects 600 Baud on DB25
W6 Selects 4800 Baud on DB9 W15 Selects 300 Baud on DB25
W7 Selects 9600 Baud on DB9 W16 Enable CTS on DB9
W8 Selects 19200 Baud on DB9 W17 Enable CTS on DB25

W18 Enable 5V Test Signal on 9-pin RS-232

A-1

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APPENDIX A

Figure A-2. Switch and Jumper Locations for ICN0 and ICN1 Interface Boards

Table A-2. Listing of Jumpers and Switches for ICN0 and ICN1 Interface Boards

Ref. Function

J2 Select ICN Baud Rate of 31,250 bps
J3 Select ICN Baud Rate of 62,500 bps

U1 Mini Link ICN0 or ICN1 Device Address

A-2

APPENDIX B

CONNECTOR DESCRIPTIONS

Table B-1. Mini Link/EXT RS-232 Port 1 (DB9) Connector Pinout

I/O Pin Signal Name I/O

1 GND GND

2 RXDATA I
3 TXDATA O
4 NC -
5 GND GND
6 NC -
7 RTS I
8 CTS O

9* NC -

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APPENDIX B

* Pin 9 can be configured to present Mini Link's 5VDC (for test purposes only) by using jumper W18.

Table B-2. Mini Link/EXT RS-232 Port 2 (DB25) Connector Pinout

I/O Pin Signal Name I/O

1 GND GND

2 RXDATA I
3 TXDATA O
4 RTS I
5 CTS O
6 NC -
7 GND GND

8 to 25 NC -

Table B-3. Mini Link/EXT ICN0 and ICN1 Connector Pinout

Terminal Signal Name*

1 IBUS(+)
2 IBUS(–)

GND GND

* Two- or Three-Wire Connection for ICN0 and ICN1. The (+) and (–) terminals accept signals from the ICN. The third terminal,

labeled "GND" is used when the Isolation Feature is employed (see jumper setting for W1).

B-1

IB-23C004

APPENDIX B

B-2

The Company’s policy is one of continuous product improvement and the right
is reserved to modify the information contained herein without notice, or to
make engineering refinements that may not be reflected in this bulletin.
Micromod Automation assumes no responsibility for errors that may appear in
this manual.
© 2004 MicroMod Automation, Inc. Printed in USA

IB-23C004, Issue 2 04/2005

MicroMod Automation, Inc.

75 Town Centre Drive

Rochester, NY USA 14623

Tel. [phone]
Fax [phone]