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
13
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.
