User Manual of EM760 High-Performance Inverter 9.7.1 Structure of LED keyboard .................................................................................. 249 9.7.2 LED Keyboard Operation .................................................................................... 249 9.7.3 Full menu mode of LED keyboard........................................................................250 9.7.4 Parameter copying ................................................................................................
251 9.7.5 Run/Stop................................................................................................................252 Chapter 10 MODBUS Communication Protocol ............................................................... 253 10.1 Applicable scope...............................................................................................................253 10.2 Interface mode ................................................................................................................. 253 10.3 Protocol Format ...............................................................................................................
253 10.3.1 Message format .................................................................................................... 253 10.3.2 Address code ........................................................................................................ 254 10.3.3 Function code ....................................................................................................... 254 10.3.3.1 0x03: function code used to read multiple registers or status words ........ 255 10.3.3.2 0x41: function code used to write a single register or command (without saving)........................................................................................................256 10.3.3.3 0x42:
function code used to write multiple registers or commands (without saving)........................................................................................................257 10.3.3.4 0x08: function code for diagnosis ............................................................. 258 10.3.3.5 0x06: function code used to write a single register or command...............260 10.3.4 Register address distribution ................................................................................ 262 10.3.3.6 0x10: function code used to write multiple registers or commands .........
261 10.3.5 Definition of frame data length ............................................................................ 267 10.3.6 CRC check.............................................................................................................267 10.3.7 Exception response................................................................................................271 10.4 Protocol Description .........................................................................................................272 10.4.1 Definition of inter-frame and intra-frame time interval .......................................
272 10.4.2 Data frame processing .......................................................................................... 273 10.4.3 Response delay ..................................................................................................... 273 10.4.4 Communication timeout ....................................................................................... 274 10.5 Examples...........................................................................................................................274 Chapter 11 Function Code Table..........................................................................................278 12