All processors have a RESET button on their front panel, which when pressed, causes a PLC cold start, in RUN or in STOP mode (1), in the application contained on the memory card (or in internal RAM).
RESET following a processor fault
As soon as a processor fault appears, the alarm relay on rack 0 (2) is deactivated (open contact) and the module outputs switch to fallback position or are maintained in the current state depending on the selection made at configuration. Pressing the RESET button causes the PLC, forced into STOP mode, to cold start.
(1) Start in RUN or in STOP mode is defined at configuration.
(2) With the processor, this relay is not controlled.
NOTE: When the RESET button is pressed, and during the PLC cold start, the terminal link is deactivated.
