4 - 4 Termination Code Table
15
Chapter 4. COMMUNICATION PROCEDURE
When an error occurred in the application layer, an abnormal termination code is returned as a response message.
■ Normal and warning termination
■ Error termination
Termination Type Contents and action
code
00 Normal Communications end normally.
21 Alarm Wrote data in the address that could not be set in the
communication due to the setup allotment by external
switching inputs.
The controller continues the process without writing any in the
concerned address.
23 Alarm The controller stops reading due to access to the address
outside the scope.
The controller stops writing due to access to the address
outside the scope, however writes inside addresses.
Termination Type Contents and action
code
40 Error “W” has not been set at the address.
All messages are aborted.
41 Error “WS”, or “RS” has not been set.
All messages are aborted.
43 Error ETX(03H) is not set in the correct position.
“,” is not set after the address.
All messages are aborted.
46 Error The address is erroneous.
All messages are aborted.
47 Error There is an error in the number of word addresses to read.
All messages are aborted.
48 Error There is an error in the written numeric.
Write has been executed, except for the error address.
99 Error An undefined command or other message error.
All messages are aborted.
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