TROUBLESHOOTING
D SERIES CONTROLLER
TROUBLESHOOTING AND COMPONENT REPLACEMENT
1-120 August 9, 2005
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ERROR CODE E4021 TCP/IP) Communication Error. CODE=XX
Dst.IP=xx.xx.xx.xx.
A communication error occurred during execution of the UDP_SENDTO/
UDP_RECVFROM/TCP_SEND/TCP_RECV instruction. May be a problem with the
Ethernet line or at the target end.
⇒
Check the communication line to the target end node and repair as necessary.
⇒
Check for problems at the target end node and repair as necessary.
⇒
The sub-error code (CODE=XX) is generated by the TCP/IP package. Refer to the
TCP/IP package manual.
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ERROR CODE E4022 TCP/IP) Message is too long.
Data sent exceeds the allowed size limit using the TCP_SEND/UDP_SENDTO/
UDP_RECVFROM instruction.
⇒
Edit the data to within allowed size limit (TCP: 4096 bytes or less, UPD: 1472 bytes or
less).
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ERROR CODE E4023 TCP/IP) Cannot reach the Host.
Failed to connect with the target end node when executing the UDP_SENDTO/
UDP_RECVFROM/TCP_CONNECT instruction. The host of the corresponding IP
address does not exist on the network. Designated port number or IP address may be
wrong. May be a problem with the communication line or at the target end node.
⇒
Ensure the port number and the IP address are correct.
⇒
Ensure the parameter settings comply with AS Language syntax.
⇒
Check the communication line to the target end node and repair as necessary.
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ERROR CODE E4024 TCP/IP) Communication Time Out.
Dst.IP=xx.xx.xx.xx.
Communication time-out occurred during instruction execution. May be a problem with
the Ethernet line or at the target end node.
⇒
Check the communication line to the target end node and repair as necessary.
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