Fault contact
Fault contact characteristics:
• During power-on, the above address is cleared to zero;
• If there is a fault, the above address is set to the next scan;
• In case of failure, the above address is set until the PLC is fully cleared or programmed
In addition to
• When there is a fault in the fault table, SY_PRES and I/O_PRES are always 1.
• In case of failure, in addition to the above contact will be set to 1, there will be related system changes
Quantity is set to 1
For example, battery low voltage: LOW_BAT