Siemens SIMATIC S7-1500 Manual page 26

Pin assignment for the front connector
The table below shows the pin assignment of the front connector.
Table 3- 2 Pin assignment of the front connector
View
Channel 0
Technology module TM PosInput 2 (6ES7551-1AB00-0AB0)
Manual, 06/2018, A5E03982218-AB
Signal name
RS422 incremental en-
with
signal N
1 +CH0.A/D Encoder signal +A
2 -CH0.A/D Encoder signal -A
3 +CH0.B/C Encoder signal +B
4 -CH0.B/C Encoder signal -B
5 +CH0.N Encoder
signal +N
6 -CH0.N Encoder
signal -N
7 5VDC
8 M
9 24VDC
10 M
11 DI0.0
12 DI0.1
13 —
14 —
15 DQ0.0
16 DQ0.1
17 —
18 M
19 - —
20
Designation
coder
without with direction
signal N signal
Counting signal +A
Counting signal -A
Direction signal
+B
Direction signal
-B
Encoder supply 5 V DC
Ground for encoder supplies and digital inputs
Encoder supply 24 V DC
Ground for encoder supplies and digital inputs
Digital input DI0
Digital input DI1
Digital output DQ0
Digital output DQ1
Digital output ground
3.2 RS422 encoder signals
RS422 pulse encoder
without direc-
tion signal
— Down counting
— Down counting
—
—
—
—
—
—
Wiring
Up/
Down
Up counting
signal +A
Up counting
signal -A
signal +B
signal -B
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