Omron SYSMAC C200HW-PCS01-EV1, Operation Manual

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Appendix D
Response Codes from the C200HX/HG/HE CPU
The following table lists the response codes (main and sub-codes) returned after execution of FINS commands,
the probable cause of the errors, and recommended remedies.
Upon receipt of some commands, the destination node will issue a request to another node; the other node is
referred to as the third node.
Response codes for FINS commands consist of two bytes that indicate the result of executing a command. The
structure of the response codes is shown in the following diagram.
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Bit
1: PC Non-fatal Error Flag
1: PC Fatal Error Flag
1: Relay Error Flag
First byte Second byte
Main response code (MRES) Sub-response code (SRES)
The main response code (MRES) in the first byte classifies the response and the sub-response code (SRES) in the
second byte indicates details under the MRES classification. If bit 7 of the first byte is ON (1), a network relay error
has occurred. Refer to Network Relay Errors in the FINS Commands Reference Manual for details on trouble-
shooting the error. If bit 6 or 7 of the second byte is ON, an error has occurred in the PC or computer returning the
response. Refer to the operation manual for the device returning the response for details when troubleshooting the
error.
Main code Sub-
code
Probable cause Remedy
00: Normal completion 00 --- ---
01: Local node error 01 Service was interrupted Check the contents of the destination
transmission area of third node.
Check the data link status.
01 Local node not part of network Add to network.
02 Token time-out, node number too
large Set the local node’s node number below
the maximum node number.
03 Number of transmit retries exceeded Check communications with internode
echo test. If the test fails, check network.
04 Maximum number of frames exceeded Either check the execution of events in the
network and reduce the number of events
occurring in one cycle, or increase the
maximum number of frames.
05 Node number setting error (range) Make sure the node number is within
specified range and that there are no
duplicate node numbers.
06 Node number duplication error Make sure that there are no duplicate node
numbers.