Omron CK3M Seres Hardware User Manual page 288

Appendices
Each error is removed by cycling the power supply.
Use a user program to monitor this register, and cycle the power supply when an error occurs.
Bit Name
31 to 28 Reserve
27 Minor error Detects a minor error in the internal memory.
26 Fatal error
25 to 00 Reserve
A-32
0: No minor error found in internal memory
1: A minor error found in internal memory
Even if a minor error occurs, operation will continue.
Detects a fatal error in the internal memory.
0: No fatal error found in internal memory
1: A fatal error found in internal memory
Even if a fatal error occurs, communications with the serial encoder will not stop.
CK3M/CK5M Series Programmable Multi-Axis Controller Hardware User's Manual (O036)
Function