Error code03C6
The CPU Unit failed to write clock data during a refresh operation. The manual's first action is: “Clear the CPU Unit error.”
- Model
- Omron CS1W-ETN21, CJ1W-ETN21
- Display shows
- Clock data write error (03C6)
- Type
- Error code
- Source
- Manual p. 232
What 03C6 means
Clock data write error p. 232
Clock information cannot be changed because a bus error occurred between the PLC and the Ethernet Unit. p. 247
Common causes
- 0001: Clock data could not be refreshed because of a CPU Unit error. p. 232
- 0002: Clock data could not be refreshed because the CPU Unit could not write clock data in that operation mode. p. 232
What to do
- Clear the CPU Unit error. p. 232
- Refer to the Operation Manual, Construction of Applications: Automatic Clock Adjustment Function, and check the operating conditions. p. 232
If 03C6 is still not resolved
- Turn OFF the power and restart the PLC. If the problem occurs again, replace the PLC, Backplane, or Ethernet Unit. p. 247 “Turn OFF the power and restart the PLC. If the problem occurs again, replace the PLC, Backplane, or Ethernet Unit.”
This page summarises what the manufacturer’s manual says about 03C6; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Omron. Found a mistake? Report an error.