CW Limit Stop Input Signal
Omron · SYSMAC CJ Series PLC
What does 0100 mean?
This fault indicates that the pulse output operation was stopped due to a CW limit signal input. This typically occurs during an origin search function, signifying that the machine has reached its positive travel limit, preventing further movement in the CW direction.
Common Causes
- CW limit switch physically activated during an origin search.
- Miswiring of the CW limit signal input, causing a false trigger.
- Incorrect 'Limit Input Signal Type' (NC or NO) configured in PLC Setup for the CW limit switch.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Manually move the driven axis in the CCW (counter-clockwise) direction until the CW limit switch is physically disengaged.
- 2
Measure continuity or voltage at the CW limit input terminal to verify signal status (ON/OFF) and expected voltage level (e.g., 24VDC for ON, 0VDC for OFF) based on the configured 'Limit Input Signal Type' in PLC Setup.
- 3
Access the PLC Setup 'I/O Module Tab Page' using CX-Programmer and verify the 'Limit Input Signal Type' parameter is correctly set to 'NC (Normally Closed)' or 'NO (Normally Open)' matching the physical switch.