8979 STO_A and STO_B different levels

Description

Refer to Diagnostic class (standard): 3

Device reactions

Default reaction

Minimum reaction

Drive

AD

AD

Power supply

-

-

This diagnostic message is triggered if the input STO_A and STO_B have different levels. Both inputs always have to have identical levels.

Cause

Solution

The wiring of the inputs is incorrect.

Verify and correct if necessary the wiring of the inputs.