Simultaneous Origin Proximity and Limit Inputs

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This fault occurs during an origin search when the origin proximity input signal and the limit input signal in the search direction are being input simultaneously. This indicates a contradiction where a proximity signal is detected at the same time as a hard limit in the direction of travel, potentially causing an emergency stop.

• Miswiring of the origin proximity input signal or the limit input signal, causing incorrect signal detection.
• Incorrect 'Origin Proximity Input Signal Type' or 'Limit Signal Type' (NC or NO) configured in PLC Setup for either sensor.
• Mechanical interference causing both the origin proximity sensor and the limit switch to trigger simultaneously.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Inspect the wiring of both the origin proximity input signal and the limit input signal in the search direction for any short circuits, breaks, or incorrect connections.

2. 2

   Access the PLC Setup 'I/O Module Tab Page' using CX-Programmer and verify both the 'Origin Proximity Input Signal Type' and 'Limit Signal Type' settings (NC or NO) match the installed sensors.

3. 3

   Examine the physical mounting and alignment of the origin proximity sensor and the limit switch to ensure they cannot be triggered simultaneously under normal operating conditions.

4. 4

   Initiate an origin search again from the HMI or programming software.