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Siemens SIMATIC S7

Siemens SIMATIC S7
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Installation
IP244
C79000–B8576–C859–02
2–12
2.2.2 Digital Outputs and One Digital Input (Socket Connector X4)
LĆ = Low
controller
off
L+ = High
controller
on
Comparator
output
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Controller outputs
Remarks
DQ 18(K)
DQ 17
DQ 16
DQ 15
DQ 14
DQ 13
DQ 12
DQ 11
DQ 10
DQ 9
DQ 8
DQ 7
DQ 6
DQ 5
DQ 4
DQ 3
DQ 2
DQ 1
Digital
input I
(Heating
switch)
No load must
be connected
here. Pin 21
supplies the
contact on pin 1.
Function
L+
(only to
supply the
input I)
Pin no.
Remarks
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1 20
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
L-
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
Function
Pin no.
K = Comparator output
I = Digital input
Switching example for digital input I (heating switch):
1
20
Switch in position ”Heating switch = OFF”
Heating switch

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