Siemens SIMATIC S5 Manual page 272

The I P247 does not evaluate any other signals from the power unit (in some cases, other signals
can be evaluated by the CPU).
Signals which can be exchanged between the IP247 and the plant
Binaryoutputs:
Position reached:
Binary inputs:
Reference point:
Limit switch 2x:
Ext. start/stop:
The following information can also be evaluated by the CPU:
selected measurement system
Axis is position (also as output)
Reference point synchronized
Axis in teach-in mode
Reference point exists
Machine data exists
Job completed
Actual position
Distance to go
Auxiliary functions (M-function)
24 V high active 120mA
24 V high active
24 V high or low active (selectable)
falling edge = start
2 4 V
rising edge = stop
I
Planning
[yes/no]
I
[yes/no]
[yes/no]
[yes/no]
[yes/no]
[yes/no]
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