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Appendix F Return Code List
A list of EN-related return codes is shown below.
These return codes are output by communication FBs. For a detailed description of
communication FBs, refer to the Instruction Manual for S/L Controllers (6F8C0865).
USND_T/URCV_T Return Code List
Return Value Description
-5000 Communication instruction request number over
-5001 Command type error
-5002 Receive timeout
-5003 Socket in use or not opened
-5004 Slot/socket number out of range
-5005 Socket not opened
-5006 Port number duplicated
-5007 Opposite station busy or disconnected
-5099 Other error
-1001 Corresponding socket busy
-1002 Corresponding socket not created
-1005 Ping timeout
-1006 Ping busy
-1010 Socket type error
-1101 Receive memory block short
-2001 Communication request number over
-2002 Request buffer number over
-2005 Corresponding socket not opened
-2006 Number of boards in use over
-2007 Response timeout
-2008 Failure to secure buffer resource
-2009 EN board being reset
-2201 Interrupt receive wait timeout
-2202 Confirmation/instruction response wait timeout
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