Panasonic FP7 User Manual page 210

Instruction References
 Flag operation
Name Description
Latest error
To be set when an out-of-range value is specified for parameters.
(SR7)
Set when the slot number specified with UNITSEL is not [S1]=100 (built-in ET-LAN).
Hold error
Set when executed in an interrupt program.
(SR8)
Set when executed while IP address is not established. The detail code set in SD29 is "12: IP
address not established".
CY flag
(SR9)
Set when executed during the processing of connection. The detail code set in SD29 is "14:
Connection being processed".
(Note): For information of the error codes stored in the system data SD29, refer to 8.1.1 List of SD29 Detail Codes.
 Precautions during programming
• When the open type is set to open automatically, it is not necessary to execute this
instruction.
• A target unit for the instruction is specified with UNITSEL beforehand.
• This instruction is not available in interrupt programs.
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