FS – output error, FS – input error, FS – encoder error

FS – output error

If the safety option detects an error at an F-DO_STO safe digital output, the safe digital output is switched to the safe state. This activates the STO safety sub-function and the safety option is set to the safe state. The bit for the drive safety function STO and the error are set to "1" in the FS-protocol.

In addition, the corresponding error code is transferred for the FS output error that occurred.

FS – input error

If the safety option detects an error at a safe digital input, the affected safe digital input is switched to the safe state. If the affected safe digital input is parameterized as dual-channel, both inputs are switched to the safe state. In the FS-protocol, the bits of the affected safe digital inputs are set to "0" and the error bit is set to "1".

In addition, the corresponding error code is transferred for the FS input error that occurred.

INFORMATION

If a safe digital input is assigned to a safety subfunction via function assignment, then this safety subfunction is selected in the event of an FS input error.

At a safe digital input with detected error, the error must first be resolved and the safe state established before acknowledging the FS input error. In this way, a safety subfunction is not erroneously selected after acknowledgment of an FS input error.