Process Signal Error - Siemens SIMATIC ET 200SP Manual

Product overview
3.2 Operating modes of the F-CM AS-i Safety ST
3.2.2.3

Process signal error

Description
Examples of conditions that trigger a process signal error are:
● Discrepancy error at the inputs of a safe AS-i input slave
● Sequence error at the inputs of a safe AS-i input slave
● Sporadic code sequence error (from FW V1.0.1), e.g. fault caused by EMC in the input
circuit
● Code sequence error at a safe AS-i input slave, e.g. due to cross-circuit at the inputs
● Failure of a safe AS-i input slave
You can read the following pattern on the LEDs:
Table 3- 3
LED
"Status"
"Error"
"CFG"
"PSF"
20
LED display for discrepancy error or sequence error
Display
Green "On"
"Off"
"Off"
Red "flashes"
Fail-safe Module F‑CM AS‑i Safety ST (3RK7136‑6SC00‑0BC1)
Manual, 03/2017, A5E03957059020A/RS-AB/002