Siemens SIMATIC S5 IP 281 Equipment Manual page 31

General Function Description
Type of plug connector: 15–way, sub D socket with screw lock The pin
Encoder inputs,
plug connectors allocations of plug connectors X5 (for counter 1) and X7 (for counter 2)
X5 and X7 are identical.
5 V Encoder Signals in Accordance with RS 422
Pin
10
11
12
13
15
24 V Encoder Signals
1 Change the jumper so that the reference potential on pin 7 corresponds
to the-connected encoder (+ sections 1.4.1 and 2.3).
Pins 2 and 3 are not used.
1 – 8
15
9
Meaning
Designation
6 5.2 V 5.2 V encoder supply (option)
Reference potential of the module (S5 bus)
N Zero marking pulse (N)
Zero marking pulse (~)
E Counting signal (track B)
B Counting signal (track B)
Counting signal (track Z)
A Counting signal (track A)
Pin Designation Meaning
A*
1
Counting signal (24 V, track A*)
B*
4 Counting signal (24 v track B*)
5 24 V 24 V encoder supply
7' Reference potential (24 ~
8 N* Zero marking pulse (24 ~
9 RE Load resistance for A*, B* and N*
8
0
1
R 11/92