UnlockRequest input
State-controlled and edge-triggered input for the request signal to unlock the safety equipment (i.e., the guard locking).
Data type: BOOL
Initial value: FALSE
Connection: Connect this input to a button/key switch connected to the Safety PLC, either directly or via other safety-related functions/function blocks. Constant TRUE or FALSE values are not permitted.
If the function block is activated (input Activate = TRUE), the possible values at this input lead to the following function block behavior:
| Value | Description |
|---|---|
| Edge FALSE > TRUE followed by TRUE | There is a request to unlock the guard locking on the safety equipment. The TRUE signal must be maintained for as long as the guard locking is unlocked via the S_UnlockGuard output (e.g., opening the safety equipment). |
| FALSE | There is no request to unlock the guard locking on the safety equipment. |