Yokogawa JUXTA VJ Series Limit Alarms - Manual (Page 7)

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IM 77J01J11-01E
CONTENTS
IM 77J01J11-01E 3rd Edition
VJ Series Communication Functions
Introduction ........................................................................................................... i
Documentation Conventions ...............................................................................ii
Notices .................................................................................................................iii
1. Setup ....................................................................................................... 1-1
1.1 Setup Procedure ............................................................................................. 1-1
1.2 Notes on Setting Parameters ......................................................................... 1-2
2. Communication Specifications .............................................................. 2-1
2.1 RS-485 Communication Specifications ......................................................... 2-1
3. PC Link Communication ........................................................................ 3-1
3.1 Overview .......................................................................................................... 3-1
3.1.1 Configuration of Command ............................................................... 3-2
3.1.2 Configuration of Response ............................................................... 3-3
3.1.3 Response Error Codes ..................................................................... 3-4
3.2 Commands ...................................................................................................... 3-5
3.2.1 List of Commands ............................................................................. 3-5
3.2.2 BRD Reading I Relays on a Bit-by-bit Basis ..................................... 3-6
3.2.3 BRR Reading I Relays on a Bit-by-bit Basis in a Random Order ....... 3-7
3.2.4 BRS Specifying I Relays to be Monitored on a Bit-by-bit Basis ......... 3-8
3.2.5 BRM Monitoring I Relays on a Bit-by-bit Basis ................................. 3-9
3.2.6 WRD Reading D Registers/I Relays on a Word-by-word Basis ....... 3-10
3.2.7 WRR Reading D Registers/I Relays on a Word-by-word Basis in a Random
Order ............................................................................................... 3-11
3.2.8 WRS Specifying D Registers/I Relays to be Monitored on a Word-by-word
Basis .............................................................................................. 3-12
3.2.9 WRM Monitoring D Registers/I Relays on a Word-by-word Basis ... 3-13
3.2.10 INF Reading the Model, Presence/Absence of Options, and Revision3-14
3.3 Communication with Higher-level Devices ................................................. 3-15
3.3.1 Example of Communication Program Created Using Visual Basic .. 3-16
3.3.2 Communication with UT Link Module .............................................. 3-20
3.3.3 Communication with Graphic Panel ................................................ 3-21
3rd Edition : Oct. 15, 2007-00