Description Of The Front Connector - Siemens SIMATIC FM 351 Manual

Wiring the FM 351
4.3

Description of the Front Connector

Front Connector
You connect the power supplies of the encoder and the digital outputs at the 20-pin
front connector (see Figure 4-2). The digital outputs and inputs assigned to the
channels are also connected.
Pinout of the Front Connector (X1)
Terminal Name
1 1L+
2 1M
3 1I0
4 1I1
5 1I2
6 1I3
7 2I0
8 2I1
9 2I2
10 2I3
11 1Q0
12 1Q1
13 1Q2
14 1Q3
15 2Q0
16 2Q1
17 2Q2
18 2Q3
19 2L+
20 2M
4-4
Meaning
24 V DC auxiliary supply for the encoders
Encoder power supply ground
Channel 1: Digital input 0
Channel 1: Digital input 1
Channel 1: Digital input 2
Channel 1: Digital input 3
Channel 2: Digital input 0
Channel 1: Digital input 2
Channel 2: Digital input 2
Channel 2: Digital input 3
Channel 1: Digital output 0
Channel 1: Digital output 1
Channel 1: Digital output 2
Channel 1: Digital output 3
Channel 2: Digital output 0
Channel 2: Digital output 1
Channel 2: Digital output 2
Channel 2: Digital output 3
24 V DC auxiliary supply for the load current
Load power supply ground
Incremental Encoders Absolute
Encoders
Reference-point switch Not used
Reverse switch Not used
Enable input
Not used
Reference point switch Not used
Reverse switch Not used
Enable Input
Not used
FM 351 Positioning Module
C79000-G7076-C351-02