ABB C1300, Дополнение к руководству пользователя

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C1300
Advanced Circular Chart Recorder Contents
IM/C1300–MOD Rev. C 1
Contents
1 Introduction ..................................................................... 2
2 Electrical Installation ....................................................... 3
2.1 Selection of Serial Communication Adaptors
for Personal Computers ........................................... 3
2.2 Recommended OPTO22 Boards ............................. 3
2.3 Pull-up and Pull-down Resistors .............................. 3
2.4 Termination Resistors ............................................... 5
2.5 RS485/422 Standard ............................................... 5
2.6 Serial Connections ................................................... 6
3 Modbus Configuration .................................................... 7
3.1 Modbus Configuration .............................................. 7
4 Modbus Protocol ............................................................ 8
4.1 Introduction to Modbus Protocol .............................. 8
4.2 Modbus Function Codes .......................................... 8
5 Modbus Functions .......................................................... 9
5.1 Read Coil Status – Function Code 01 ...................... 9
5.1.1
Read Coil Status Query ................................ 9
5.1.2 Read Coil Status Response .......................... 9
5.2 Read Holding Register – Function Code 03 .............. 9
5.2.1
Read Holding Register Query ........................ 9
5.2.2 Read Holding Register Response ............... 10
5.3 Force Single Coil – Function Code 05 .................... 10
5.3.1
Force Single Coil Query .............................. 10
5.3.2 Force Single Coil Response ........................ 10
5.4 Preset Single Register – Function Code 06 ............ 11
5.4.1
Preset Single Register Query ...................... 11
5.4.2 Preset Single Register Response ................ 11
5.5 Loopback Test – Function Code 08 ....................... 11
5.5.1
Loopback Test Query ................................. 11
5.5.2 Loopback Test Response ........................... 11
5.6 Write Multiple Registers – Function Code 16 .......... 12
5.6.1
Write Multiple Registers Query .................... 12
5.6.2 Write Multiple Registers Response .............. 12
6 Exception Responses .................................................. 13
6.1 Examples .............................................................. 13
7 Modbus Registers ........................................................ 14
7.1 Coils ...................................................................... 14
7.2 Holding Registers .................................................. 16
7.3 Alarm Settings ....................................................... 17
7.4 Chart Settings ....................................................... 18
7.5 Totalizer Settings ................................................... 19
Notes ................................................................................ 20