Learning units
3.1 1. Step: Wire the CPU
First Steps in Commissioning CPU 31xC: Positioning with digital output
Getting Started, 08/2011, A5E00105533-03
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Connector pin assignment
The pin assignments described below relate only to the connections relevant for the
positioning type.
Table 3- 1 CONNECTOR X2
Pin Name/address Function
1 1 L+ 24 V power supply of the inputs
2 DI + 0.0 Encoder signal A
3 DI + 0.1 Encoder signal B
4 DI + 0.2 Encoder signal N
5 DI + 0.3 Length measurement
6 DI + 0.4 Reference point switch
20 1 M Ground
31 3 L+ 24 V power supply of the outputs
32 DO + 1.0 Digital output Q0
33 DO + 1.1 Digital output Q1
34 DO + 1.2 Digital output Q2
35 DO + 1.3 Digital output Q3
40 3 M Ground
Reference
You will find information on the remaining connections in the documentation of the S7-300.
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