Siemens SIMATIC S7-1500 Manual page 30

Pin assignment for the front connector
The table below shows the pin assignment of the front connector.
Table 3- 3 Pin assignment of the front connector
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Channel 0
Technology module TM PosInput 2 (6ES7551-1AB00-0AB0)
Manual, 06/2018, A5E03982218-AB
Signal name
TTL incremental encoder
with
signal N
1 +CH0.A/D Encoder signal A
2 -CH0.A/D
3 +CH0.B/C Encoder signal B
4 -CH0.B/C
5 +CH0.N Encoder
signal N
6 -CH0.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
without with direction
signal N signal
Counting signal A
—
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
—
3.3 TTL encoder signals
TTL pulse encoder
without direc- Up/
tion signal Down
Up counting
signal A
— Down counting
signal B
—
Wiring
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