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4-13
Chapter 4. CPL Communication
z Response message to the WS command
If the data in the data link layer is correct, only a termination code is returned.
4 - 4 Termination Code (p. 4-16) (for termination code types)
1. Normal response
If data is written correctly, a normal response is returned.

Ex.: A normal response like the one below is returned when all the data is
correctly written.
Termination code (00 = normal)
02H 30H 31H 30H 30H 58H 30H 30H 03H 38H 32H 0DH 0AH
STX 0 1 0 0 X 0 0 ETX 8 2 CR LF
Data link layer Application layer Data link layer
2. Error response
If data was not written properly due to an error in the instruction message, an error
response is returned.

Ex.: Error response ("**" stands for the error termination code.)
Termination code (** = an error code)
02H 30H 31H 30H 30H 58H *H *H 03H ??H ??H 0DH 0AH
STX 0 1 0 0 X * * ETX ? ? CR LF
Data link layer Application layer Data link layer
Handling Precautions
•
The data address, read count, value to write, and data to read must conform to
the following rules.
•
Use capital letters in character codes for all numbers and characters in the
application layer.
•
Unnecessary zeros or spaces are not allowed.
The underlined portion of “WS,01001W,1” is not allowed.
The underlined portions of “WS,_1001W,01” are not allowed.