Issue:
M171 supported Modbus function codes
Product Line:
M171, EcoStruxure Machine Expert HVAC
Resolution:
Below is the list of supported Modbus function codes of Modicon M171βs Modbus RTU master
- Read Coils β Function 01 (0x01): reads one or more 1-bit read-write objects;
- Read Discrete Inputs β Function 02 (0x02): reads one or more 1-bit read-only objects;
- Read Holding Registers β Function 03 (0x03): reads one or more 16-bit read-write objects;
- Read Input Registers β Function 04 (0x04): reads one or more 16-bit read-only objects;
- Write Single Coil β Function 05 (0x05): writes a single 1-bit read-write object;
- Write Single Register β Function 06 (0x06): writes a single 16-bit read-write object;
- Write Multiple Coils β Function 15 (0x0F): writes one or more 1-bit read-write objects;
- Write Multiple Registers β Function 16 (0x10): writes one or more 16-bit readwrite objects
Released for: Schneider Electric Malaysia
Issue:
M171 supported Modbus function codes
Product Line:
M171, EcoStruxure Machine Expert HVAC
Resolution:
Below is the list of supported Modbus function codes of Modicon M171βs Modbus RTU master
- Read Coils β Function 01 (0x01): reads one or more 1-bit read-write objects;
- Read Discrete Inputs β Function 02 (0x02): reads one or more 1-bit read-only objects;
- Read Holding Registers β Function 03 (0x03): reads one or more 16-bit read-write objects;
- Read Input Registers β Function 04 (0x04): reads one or more 16-bit read-only objects;
- Write Single Coil β Function 05 (0x05): writes a single 1-bit read-write object;
- Write Single Register β Function 06 (0x06): writes a single 16-bit read-write object;
- Write Multiple Coils β Function 15 (0x0F): writes one or more 1-bit read-write objects;
- Write Multiple Registers β Function 16 (0x10): writes one or more 16-bit readwrite objects
Released for: Schneider Electric Malaysia




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