Panasonic GM1 - Page 567

Function code Access type Description
2 Read Discrete Inputs Input register
3 Read Holding Registers Holding register
4 Read Input Registers Input register
5 Write Single Coil Holding register
6 Write Single Register Holding register
15 Write Multiple Coils Holding register
16 Write Multiple Registers Holding register
23 Read / Write Multiple Registers Holding register (Read/Write)
13.3 MODBUS
WUME-GM1RTXOP-01 13-41