Copyright © 2004 EIM COMPANY, INC. • 13840 PIKE ROAD • MISSOURI CITY, TX. 77489
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Controlinc 1771-C (Version 5.21) Network Master Users Guide (2004-11-18)
5.4.12. Table [14]: Additional Register Being Polled From Entire Network................... 71
5.4.13. Table [15]: Additional Block of Registers Being Polled From 1 Actuator........... 73
5.4.14. Tables [16 & 17]: Monitor & Control Discrete Digital Outputs ........................... 76
5.4.15. Table [18]: Actuator System Type ID................................................................ 80
5.4.16. Table [19]: Actuator Firmware Version ID......................................................... 82
5.4.17. Table [20]: Modbus Exception Message Response..........................................83
5.4.18. Tables [21-24]: TEC2000 Status Inputs............................................................ 85
6. Application Notes ........................................................................................87
6.1. App Note: Performance Tuning ......................................................................... 87
6.1.1. General Practices to Ensure Better Performance................................................ 87
6.1.2. Reading Run-Time Information from Table [0]..................................................... 87
6.1.3. Loading Table [0] with Configuration Information ................................................ 88
6.1.4. Behavior if a Delay in Loading Table [0] Configuration Information ..................... 89
6.1.5. Using the “Scan Period” Value ............................................................................ 90
6.2. App Note: 1771-C Operation – Additional Detailed Information .................. 91
6.2.1. Determining & Exiting “Network Down” Condition ............................................... 91
6.2.2. Detailed Description of 1771-C Operation ........................................................... 92
6.2.3. Time Allocated Process Control (Allocated Time Slices)..................................... 93
6.2.4. Preferred Communication Port Operation............................................................ 95
6.2.5. Communication Failure Indications (Low-Level & High-Level)............................. 96
6.2.6. Bringing Units On-Line After a Power Cycle ........................................................ 99
6.2.7. Toggling the Preferred Port to Assist Diagnostics ............................................. 100
6.3. App Note: For Diagnostics - Know the Physical Network Wiring ............... 101
6.4. App Note: Memory Maps ................................................................................. 102
6.4.1. Specific Holding Registers Referenced by the Network Master......................... 102
6.4.2. Specific Coils & Inputs Referenced by the Network Master............................... 103
6.4.3. 320A Memory Map … Table for Coils & Inputs (Version 2.0) ............................ 104
6.4.4. 320A Memory Map … Addressable Holding Registers (Version 2.0) ................ 105
6.4.5. 320B Memory Map … Table for Coils & Inputs.................................................. 107
6.4.6. 320B Memory Map … Addressable Holding Registers...................................... 108
6.4.7. TEC2000 Memory Map … Table for Coils & Inputs........................................... 110
6.4.8. TEC2000 Memory Map … Table for Holding Registers..................................... 111
6.5. App Note: Modbus Message Formats.............................................................. 116
6.5.1. Modbus RTU Functions (Command Codes) Implemented ................................ 116
6.5.2. Modbus Function (Command) Code Descriptions ............................................. 117
6.5.2.1. Modbus Function Code 01 … Read Coil Status .................................................117
6.5.2.2. Modbus Function Code 03 … Read Holding Register........................................118
6.5.2.3. Modbus Function Code 05 … Set (Force) Single Coil........................................119
6.5.2.4. Modbus Function Code 06 … Set Single Register .............................................120
6.5.2.5. Modbus Function Code 15 (0x0F) … Set (Force) Multiple Coils ........................121