The safety functions of the IM151-7 F-CPU are present in the F program of the CPU and in the fail-safe signal modules. The signal modules monitor the output and input signals by means of discrepancy analyses and test signal injections.
The CPU checks proper operation of the PLC by performing regular self-tests, instruction tests and logic and sequential program flow control. In addition, the I/O is checked by requesting signs of life.
If an error is diagnosed on the system, the latter is moved to a safe state.
Mfr. Part No. | Description |
6AG1151-7FA21-2AB0 | SIPLUS ET200S IM151-7 F-CPU -25 ... +60 DEGREES C WITH CONFORMAL COATING BASED ON 6ES7151-7FA21-0AB0 . ET200S, 192KB WORKING MEMORY WITH INTEGRATED PROFIBUS DP INTERFACE (9 PIN SUB-D, FEMALE) AS DP SLAVE, WITHOUT BATTERY SIMATIC MMC REQUIRED |