Shihlin electric SL3 Series, User Manual

Page: 125 / 211

Communication parameter group 07
PARAMETER DESCRIPTION 121
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Communication format:
1.
Data readout（H03）
Mode Start Address*1） Function*2） Start address*3） Number of register*4） Check Stop
ASCII H3A 2char 2char 4char 4char 2char 0D 0A
RTU >=10ms 8bit 8bit 2byte 2byte 2byte >=10ms
Normal response
Mode Start Address*1） Function*2） Readout data number*5） Readout data*6） Check Stop
ASCII H3A 2char 2char 2char 4char …2N×8bit 2char 0D 0A
RTU >=10ms 8bit 8bit 1byte 2byte …N×8bit 2byte >=10ms
Message Content
*1)Address Set the address for sending information, 0 is invalid
*2)Function code H03
*3)Start address Set the address of the register to be read
*4)Number of registers Set the number of registers to be read. The maximum number is 20.
*5)Read data number Twice as much as *4)
*6)Read data Set the data specified in *4)and read the data from high byte to low byte.
2. Data write in（H06）
Mode Start Address*1) Function*2) Start Address*3) Write-in data*4) Check Stop
ASCII H3A 2char 2char 4char 4char 2char 0D 0A
RTU >=10ms 8bit 8bit 2byte 2byte 2byte >=10ms
Normal response
Mode Start Address*1) Function*2) Start Address*3) Write-in data*4) Check Stop
ASCII H3A 2char 2char 4char 4char 2char 0D 0A
RTU >=10ms 8bit 8bit 2byte 2byte 2byte >=10ms
Message Content
*1)Address Set the address for sending information
*2)Function code H06
*3)Start address Set as the start address of the register that needs to be written
*4)Write data Write data to the specified register, fixed at 16bit.
Note: The content of normal response is the same as query information
3. Write multiple registers（H10）
Mode Start
Address
*1) Function
*2) Start
Address *3) Number of
register *4)
Data*5) Write-in data *6) Check Stop
ASCII H3A 2char 2char 4char 4char 2char 4char …2N×8bit 2char 0D 0A
RTU >=10ms 8bit 8bit 2byte 2byte 1byte 2byte …N×16bit 2byte >=10ms