ICN Mini Link/External User’s Guide 1733N Model A –...

22
ICN Mini Link/External User’s Guide 1733N Model A – Mini Link/EXT (Version 1) 1732N Model A – ICN Interface Board (Version 1)

Transcript of ICN Mini Link/External User’s Guide 1733N Model A –...

Page 1: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

ICN Mini Link/External User’s Guide 1733N Model A – Mini Link/EXT (Version 1) 1732N Model A – ICN Interface Board (Version 1)

Page 2: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

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

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

Note. Clarification of an instruction or additional information.

i Information. Further reference for more detailedinformation or technical details.

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.

All software, including design, appearance, algorithms and source codes, is copyrighted by MicroMod Automation, inc. and is owned by

MicroMod Automation or its suppliers.

Page 3: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

CONTENTS––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

CONTENTS

PageSECTION 1 - INTRODUCTION

1.1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11.2 EXPLANATION OF SERIAL AND CATALOG NUMBER . . . . . . . . . . . . . . . . . . 1-31.3 PRODUCT DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.3.1 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31.3.2 1732N ICN Interface Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-41.4 TECHNICAL SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-51.5 RELATED DOCUMENTATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

SECTION 2 - INSTALLATION2.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.2 SERIAL PORT CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.3 JUMPER SETTINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.3.1 Serial Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22.3.2 ICN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32.3 LOCATING MINI LINK/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

SECTION 3 - TROUBLESHOOTING THE MINI LINK3.1 NO RESPONSE FROM LINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.2 PARITY, FRAMING OR OVERRUN ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13.3 NO RESPONSE FROM THE FIELD INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . . 3-1

APPENDIX A - JUMPERS AND SWITCHES

APPENDIX B - CONNECTOR DESCRIPTIONS

ILLUSTRATIONS

Figure Page1-1 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1 Mounting Dimensions, 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4A-1 Switch and Jumper Locations for 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . . . A-1A-2 Switch and Jumper Locations for ICN0 and ICN1 Interface Boards . . . . . . . . . . . A-2

TABLES

Table Page2-1 External Mini Link Serial Port A Baud Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22-2 External Mini Link Serial Port B Baud Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2A-1 Listing of Jumpers and Switches for 1733N Mini Link/EXT . . . . . . . . . . . . . . . . . A-1A-2 Listing of Jumpers and Switches for ICN0 and ICN1 Interface Boards . . . . . . . . . A-2B-1 Mini Link/EXT RS-232 Port A (DB9) Connector Pinout . . . . . . . . . . . . . . . . . . . B-1B-2 Mini Link/EXT RS-232 Port B (DB25) Connector Pinout . . . . . . . . . . . . . . . . . . . B-1B-3 Mini Link/EXT ICN0 and ICN1 Connector Pinout . . . . . . . . . . . . . . . . . . . . . . . . B-1

i

Page 4: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

CONTENTS––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––

ii

Page 5: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INTRODUCTION

SECTION 1INTRODUCTION

1.1 DESCRIPTION

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

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

• Permitting the host device to download and upload instrument configurationinformation. This enables instrument configuration to be performed at a centrallocation using a personal computer that can easily display, manipulate and documentdata.

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

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

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

Figure 1-1. 1733N Mini Link/EXT

1-1

Page 6: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INTRODUCTION

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

• Two Serial PortsThe two RS-232C serial ports (one DB9 and one DB25) have individually configurablebaud 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 provideredundant control of the instrument system.

• One Instrument Communications Network ControllerThe base ICN Controller is accessed via a two-wire or three-wire connection at therear 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 fieldinstruments.

• Optical Isolation Between Instruments and Personal ComputerThe optical isolation feature is jumper-selectable (see Section 2.3, Jumper Settings )and provides a minimum of 3000 Vdc electrical insulation between the InstrumentCommunications Network and the personal computer. THIS FEATURE IS NOTFACTORY SET.

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

• Front Panel IndicatorsThe front panel of the External Mini Link is divided into two sections labled ICN0 andICN1. 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 andresponding 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 providecommunications access to an additional 15 field instruments. This daughter board ismounted to the External Mini Link board and is accessed via a two- or three-wireconnection at the rear of the box using the three-screw terminal block at the connectionmarked "ICN1".

1-2

Page 7: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INTRODUCTION

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 descriptionsfollow 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 describedbelow, contains a series of single and multiple-character codes. These codes providespecific information concerning various electrical and/or structural options. Certaincombinations are not allowed. Options and combinations are subject to change.

Base Number

Unused

Electrical Code

ICN Interface

Firmware

Model/Design Level

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

Catalog Number

Sequential Identification Number

1.3 PRODUCT DESCRIPTIONS

The following product is maintained at the serial and catalog number level. Thedescriptions 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 personalcomputer and the ICN. The central processor for the External Mini Link is the 63B09Eusing an 8-bit bus and a 2 mHz dual phase clock. The processor board checks messageprotocol and handles all data transfers between the ICN interface boards and intelligentdevices connected to the serial I/O board. Each ICN interface board services directcommunication with one ICN (up to 15 instruments).

The processor board keeps track of all message requests and responses. A request tothe processor board for foreground (display) data from a host device results in the databeing retrieved from the instrument ICN interface board which is automatically updatedevery 250 msec. This permits the data to be sent immediately to the host. A requestfrom a host device for the background (tuning) data of an instrument is acknowledged witha "wait and acknowledge" response. The instrument ICN interface board retrieves therequested 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 isimmediately transmitted to the host.

1-3

Page 8: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INTRODUCTION

Catalog Number Description for 1733NBASE NUMBER 1733N Mini Link/EXT

UNUSED Z Unused Character

ELECTRICAL CODE 10 General Purpose

ICN INTERFACE 1 One ICN2 Two ICNs

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 tothe 1733N when the option board was not originally specified. The central processor isthe 63B09E using an 8-bit bus and a 2 mHz dual phase clock.

Catalog Number Description for 1732NBASE 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

Page 9: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INTRODUCTION

1.4 TECHNICAL SUMMARY

POWER REQUIREMENTS

Input: 85 - 250 Vrms Universal InputOutput: 5V, 2APower Dissipation: 15W@125VSwitching Frequency: 30kHzDetachable Power Cord (supplied cord may not be suitable for all input conditions)

North American Color CodingRated 105°C, 125VPasses VW-1 Vertical Wire Flame TestNEMA 5-15P Molded Vinyl Grounding PlugUL/CSA ApprovedLength: 6'7" (2 meters)

PHYSICAL CHARACTERISTICS

Dimensions1733NZ10101A Length: 9.975 inches(253.35mm)

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

I/O PortsSerial Port 1: J1, DB9 femaleSerial Port 2: J2, DB25 femaleICN0: J3, 2-wire communications, ground ICN1: J4, 2-wire communications, ground

ICN Connections: 18 AWG (1mm), twisted pair wire (an additional 18 AWG wire isrequired to use the isolation feature as described in Section 2.3.2 .).

Switches and Jumpers: See Appendix A

MicroprocessorLink Processor: 63B09E, 8 bit, 2 mHz dual phase clockICN 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

Page 10: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INTRODUCTION

PERFORMANCE CHARACTERISTICS

* Maximum ratings indicate limits beyond which permanent damage may occur. Continuous operation at theselimits is not intended and should be limited to those conditions specified.

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

Relative Humidity5 to 90% RH at 32°C

Message QueueActive: 4Waiting Processing: 4

ICN Interface Memory SizeRAM: 16K bytesPROM: 32K bytes

TrendVariables Accumulated: 100 maximum; 16-bit wordsTypes per Variable: Minimum, maximum, averageResolution: 1 minute

1.5 RELATED DOCUMENTATION

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

• IB-23G001 ICN Communication Link Programmers Reference Manual

• IB-23A160 ICN Communications Planning

1-6

Page 11: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INSTALLATION

SECTION 2INSTALLATION

2.1 GENERAL

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

• DB9 RS-232 A (Serial Port A)Baud set to 9600 bps, No Parity (Not configurable), 8 Data Bits (Not configurable), 1 Stop Bit (Not configurable), Clear-To-Send (/CTS) Ignored

• DB25 RS-232 B (Serial Port B)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 makechanges:

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

DANGERAC power voltages are present. Failureto turn off power will expose you todeadly 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 orenable Clear-To-Send.

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

CAUTIONMake sure that only one baud rate per Serial Port is enabled. If twoor more jumpers are installed on one baud rate jumper bank, the unitwill not operate and damage to the External Mini Link and/or the targetsystem may occur.

6. Reassemble the unit and reconnect.

2-1

Page 12: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INSTALLATION

2.3 JUMPER SETTINGS

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

2.3.1 Serial Ports

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

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

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

BAUDJumper IN

W2 W3 W4 W5 W6 W7 W8

19200 N N N N N N Y

9600 N N N N N Y N

4800 N N N N Y N N

2400 N N N Y N N N

1200 N N Y N N N N

600 N Y N N N N N

300 Y N N N N N N

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

BAUDJumper IN

W9 W10 W11 W12 W13 W14 W15

19200 Y N N N N N N

9600 N Y N N N N N

4800 N N Y N N N N

2400 N N N Y N N N

1200 N N N N Y N N

600 N N N N N Y N

300 N N N N N N Y

2-2

Page 13: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INSTALLATION

Clear-To-Send (CTS) for Serial Ports A and BBoth serial ports are outfitted with a CTS connection. In most cases, the CTS signal willnot be needed. In the event that your configuration requires a CTS signal, install jumpersW16 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 JumperJumper W18 provides access to the 5V power plane of the External Mini Link. If JumperW18 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.

2.3.2 ICN

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

External Mini Link ICN Device AddressEach device on a given Instrument Communication Network must be assigned a uniqueaddress between 0 and 15. Normally, the External Mini Link will be assigned an address of0 (Factory Set) with the instruments starting at 1, 2, 3, etc. In the case where the factory-set device address is not suitable, use switch U1 to change the address for the ICN0 andICN1 boards.

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

ICN0J2 Installed – Selects ICN0 Baud Rate of 31,250 bpsJ3 Installed – Selects ICN0 Baud Rate of 62,500 bps

ICN1J2 Installed – Selects ICN1 Baud Rate of 31,250 bpsJ3 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 andpower source. Figure 2-1 shows the mounting dimensions for the External Mini Link.

2-3

Page 14: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

INSTALLATION

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

NOTE:

The detachable power cord supplied

with the 1733N is 6 ft 7 in long (2 m).

2-4

Page 15: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

TROUBLESHOOTING THE MINI LINK

SECTION 3TROUBLESHOOTING 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 incorrectlyinstalled. Verify connection between the host and the Mini Link/EXT as shown in thetables in Appendix B .

• The Clear-To-Send function on the Mini Link/EXT has been enabled without enablingthe 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 properwiring.

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

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

• There is a communications parameter incompatibility between the External Mini Linkand 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 controllingsoftware (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 thechecklist 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 (–) screwon the rear of the Mini Link/EXT.

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

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

3-1

Page 16: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

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-wireinterface 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 forthe first ICN is connected to the Mini Link/EXT terminal block labeled ICN0 while thetwo-wire interface for the second ICN is connected to the Mini Link/EXT terminal blocklabeled 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 withany instrument ICN device address.

NOTE: Under some circumstances, line loss and/or ground loops may causesignificant voltage differences between the External Mini Link and the fieldinstruments. If you expect that this may be the case, attach a ground wirebetween the field instruments and the External Mini Link ICN0 or ICN1 terminalblock.

3-2

Page 17: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

APPENDIX A

APPENDIX AJUMPERS AND SWITCHES

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

Page 18: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

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

Page 19: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

APPENDIX B

APPENDIX B CONNECTOR DESCRIPTIONS

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

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

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 -

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

* 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).

Terminal Signal Name *

1 IBUS(+)

2 IBUS(–)

GND GND

B-1

Page 20: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

IB-23C004

APPENDIX B

B-2

Page 21: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between
Page 22: ICN Mini Link/External User’s Guide 1733N Model A – …micmod.com/sites/default/files/IB-23C004.pdfThe 1733N Mini Link/EXT is a serial interface box for communications between

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. 585-321 9200 Fax 585-321 9291

www.micromodautomation.com