Max Time Expired (Specific)
Beckhoff · TwinSAFE Logic FB
What does 0x40CB mean?
The 'MaxTimeExpired' flag within the FB Envelope function block is TRUE. This confirms that the maximum permissible time for the safety function output to be active has been reached, causing the output to switch off. This fault prioritizes safety by ensuring the output does not remain active beyond its design limit.
Complete Troubleshooting Guide
- 1
Review the operational sequence of the machine or process to understand why 'InValue' remained within the target window for an extended duration.
- 2
Check and potentially adjust the 'Max Time (ms)' parameter within the FB Envelope configuration if the application's actual timing requirements have changed.
- 3
Verify any associated timers or delays in the control system that could influence how long 'InValue' remains in the target state.
- 4
Ensure no external factors or system anomalies are inadvertently extending the period 'InValue' stays within the target range.