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SECTION 5 Modbus Communications Procedure
5.2 Function List
Function code
03 (H'03)
16 (H'10)
06 (H'06)
08 (H'08)
5-6
The following table lists the function codes.
Function Code List
Name
Read variable
This function reads from variable areas.
(multiple)
It is possible to read two or more consecutive variables.
Write variable
This function writes to variable areas.
(multiple)
It is possible to write two or more consecutive variables.
It is also possible to broadcast this function (broadcast
transmission).
Write variable
This function writes an operation command.
(operation com-
It is also possible to broadcast this function (broadcast
mand)
transmission).
Echoback Test
This function performs an echoback test.
Process
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