E-Stop Discrepancy Error - Input Group 4

What does FB ESTOP Bit 3 mean?

A discrepancy has been detected between the two channels of input group 4 for the FB ESTOP. This indicates that the redundant E-Stop input signals are not in agreement, suggesting a potential failure of one channel, a wiring issue, or an incorrect switching sequence. This will prevent the E-Stop function from operating safely and halt the machine.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review the discrepancy time parameter for E-Stop input group 4 in the FB ESTOP configuration; adjust if the application legitimately has different timing requirements.

2. 4

   Monitor the individual input channels for group 4 in real-time using diagnostics to identify which channel is deviating or delayed.