IAI America RCM-GW-DV - Manual (Page 85)

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DeviceNet Gateway
(4) Error response
If a command error occurs, the most significant bit (b15) of the response command will turn ON and a
corresponding error code, as shown below, will be set in response data 1.
If link is not yet established at all, nothing will be shown in the response command.
Code Description
0101H Invalid axis number *1
0102H Invalid position number *1
0103H Invalid request command *1
0201H Communication failure
0202H Command not executable by the controller
*1 If an error is found as a result of checking the data received from the PLC, the Gateway Unit will
set an error code in the response data without sending the command to the controller.
(5) How to use commands
To use various commands, process the applicable data in the command area according to the flow
shown below. In the example flow, only one command is processed.
Use a command
Response
command area 0?
Clear the request command
area and data areas 0 to 3
Write the command code in
the request command area
Write the necessary data in
data areas 0 to 3
Response command =
Request command?
Clear the request command area
Clear data areas 0 to 3