
MNET ♦ ProLinx Gateway Modbus Protocol Specification
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 55 of 78
September 1, 2010
4 Modbus Protocol Specification
Read Coil Status (Function Code 01)
In This Chapter
.................................................... 56
Read Input Status (Function Code 02) .................................................. 57
Read Holding Registers (Function Code 03) ......................................... 58
Read Input Registers (Function Code 04) ............................................. 59
Force Single Coil (Function Code 05) ................................................... 60
Preset Single Register (Function Code 06) ........................................... 61
Diagnostics (Function Code 08) ............................................................ 62
Force Multiple Coils (Function Code 15) ............................................... 66
Preset Multiple Registers (Function Code 16) ....................................... 67
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