Omron CS1W-SLK11-21 - 06-2004, Manual

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Troubleshooting Section 8-1
8-1-2 Probable Causes and Remedies of Response Code Errors
The table below lists the probable causes of response code errors when using
the SEND(90), RECV(98), and CMND(490) instructions. (Refer to
6-2-4 Com-
munications Ports for details on where the SEND(90), RECV(98), and
CMND(490) instructions response codes are stored.)
The 6th, 7th, and 15th bits of the response codes may be ON. When the 15th
bit is ON, a network relay error has occurred. Refer to
Network Relay Errors
below for remedies. When the 6th or 7th bit is ON, an error has occurred in
the destination CPU Unit. Refer to the CPU Unit operation manual, and clear
the error in the destination CPU Unit. The following table gives the meanings
of the response codes.
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.
1: Relay Error Flag
1: Nonfatal CPU Unit Error Flag 1: Fatal CPU Unit Error Flag
Main code Sub-code
Main code Sub-
code
Probable cause Remedy
00: Normal completion 00 --- ---
01 Service was interrupted Check the contents of the destination trans-
mission area of third node.
01: Local node error 01 Local node not part of Network Add to Network.
02 Token time-out, node address too high Set the local node’s node address below
the maximum node address
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 max-
imum number of frames.
05 Node address setting error (range) Make sure the node address is within the
specified range and that there are no dupli-
cate node addresses.
06 Node address duplication error Make sure that there are no duplicate node
addresses.
02: Destination node
error 01 Destination node not part of Network Add to Network.
02 No node with the specified node
address Check the destination node’s node address.
03 Third node not part of Network Check the third node’s node address.
04 Busy error, destination node busy Increase the number of transmit retry
attempts or re-evaluate the system so that
the destination node is not so busy receiv-
ing data.
05 Response time-out, message packet
was corrupted by noise Increase the number of transmit retry
attempts. Perform an internode echo test to
check noise level.
Response time-out, response watch-
dog timer interval too short Increase the value for the response watch-
dog timer interval.