Panasonic FP7 User Manual page 96

High-level Instructions
 Flag operation
Name Description
Latest error (S7) To be set when the unit specified by UNITSEL is not an Ethernet unit.
Hold error (S8)
To be set when the EtherNet/IP function is set to Not Use in the Ethernet unit configuration.
To be set in case of out-of-range in indirect access (index modiication).
To be set when executed in an interrupt program.
To be set when the node specified by S does not exist.
To be set when three-word device cannot be assured from the device of D2.
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