BECKHOFF AX5805 Installation - Manual (Page 91)

Product description
AX5805 89
3.7.3 Step 3: link Error_Acknowledge in Safe PLC
In order to be able to acknowledge errors (e.g. reset an error after the axis has moved in the negative
direction while the SDIn safety function is activated), a safe input (in this case channel 1 of the first EL1904)
is linked with the Error_Acknowledge bit in the control word of the AX5805.
Figure 42: AX5805 Error_Ack link
Figure 43: Error_Acknowledge button on the AX5805