Omron NE1A-EDR01, Operation Manual

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Formats Section 4-2
4-2-2 Response Format
When a response is returned from the destination device on the DeviceNet
network, the ED Router sends the response (a UDP/IP message) to the trans-
mission source on the Ethernet network.
The following tables show the response format.
Instance ID Sets the instance ID for the destination object. The
instance ID set here is sent to the destination node as
is.
Data Sets the data. The contents of the data vary depending
on the service code.
Parameter Description
+0 Message sequence number 2 bytes
+2 Data size 2 bytes
+4 Destination node address 1 byte
+5 Service code 1 byte
+6 Data 552 bytes max.
Parameter Description
Message sequence number The sequence number set when the command was
sent is returned.
Data size The data size from the destination node address
onwards is stored here, in bytes.
Destination node address The destination node address (transmission source
address) on the DeviceNet network is stored here.
Service code The service code for the destination object set when the
command is sent is stored here. If the response is nor-
mal, the leftmost bit of the requested service code turns
ON.
If it is an error response, 94 hex is returned.
Data The response data is stored here. If there is an error
response, the following data is returned.
• General Error Code (1 byte)
• Additional Error Code (1 byte)