TDK-Lambda GXE600 Series, Communications Manual

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COMMUNICATION MANUAL
GXE600 SERIES
TDK­Lambda
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・Message exchange example
The Read the Holding register for two words from the start address 100d (0x0064)
Query Response
Field [HEX] Field [HEX]
Function code 0x03 Function code 0x03
Start address Hi 0x00 Number of data bytes 0x04
Start address Lo 0x64 Register 0x0064 Hi 0x0A
Number of registers Hi 0x00 Register 0x0064 Lo 0x01
Number of registers Lo 0x02 Register 0x0065 Hi 0x00
Register 0x0065 Lo 0x03
It means the following contents from above response data.
CNT setting : 0x0A01
PVCC setting : 0x0003
3.3.3 FC : 6 (0x06) Write single Holding register
The Updates the content of a single Holding register.
If the specified register is supported non-volatile memory, it is updated as non-volatile data.
Broadcast is valid.
・Request PDU
Field Number of bytes Field value
Function code 1 0x06
Starting Address 2 Refer to 4.Register list
Register data 2 Write data
・Response PDU
Field Number of bytes Field value
Function code 1 0x06
Starting Address 2 Refer to 4.Register list
Register data 2 Write data echo back
・Error PDU
Field Number of bytes Field value
Function code 1 0x86
Exception code 1 Refer to 3.2.2
It can be used to update data of a single register.
If the specified start address is a reserved address, an exception response [Exception code 0x02: ILLEGAL
DATA ADDRESS] is returned.
Exception response [Exception code 0x03: ILLEGAL DATA VALUE] is returned if the Request PDU size is not
the valid size (5 bytes) or the register data is out of the allowable range.
When an exception response occurs, non-volatile memory is not updated.