Table of communication check error

Error code	Name	Operation status	Description and steps to take
E63	PLC error mode(Available PLC: FP2/FP2SH/FP3/FP10SH)	Stops	Transfer was attempted in the RUN mode. Switch the mode and execute once again.
E64	No ROM/RAM error(Available PLC: FP2/FP2SH/FP3/FP10SH)	Stops	An abnormality occurred when loading RAM to ROM/IC memory card. There may be a problem with the ROM or IC memory card. When loading, the specified contents exceeded the capacity (256 KB). Write error occurs. ROM or IC memory card is not installed. ROM or IC memory card does not conform to specifications. Check the contents of the ROM or IC memory card.
E65	Protection error	Stops	Transfer was attempted during ROM operation or IC memory card operation. Switch the mode and execute once again.
E66	PLC write error address error(Available PLC: FP2/FP2SH/FP3/FP10SH)	Continues	In the programming tool software, program editing is being attempted by online access, but the program is not in agreement. (The program disagreement lies in another block.)Check the program.
E68	Rewrite during RUN error(Available PLC: FP2/FP2SH/FP3/FP10SH)	Continues	When inputting with the programming tool software, editing of an instruction (ED, SUB, RET, INT, IRET, SSTP, and STPE) that cannot perform a rewrite during RUN is being attempted. Nothing is written to the CPU.