[Cause]
1. An error occurred while executing a group switching instruction under the power-failure recovery function for the group state at power-on.
2. Be of one of the following circumstances.
- The configuration has been changed after the final implementation of the parameterization operation.
- The configuration of the group at the end of the power cut does not match the configuration of the current group.
- IBPXC.SV was loaded before cutting the power of the control device.
[Countermeasure]
1. Check the error reported by the InterBus board firmware.
2. Restore the group state manually.