Siemens SIMATIC S7 - Digital Outputs and One Digital Input (X4 Female Connector Strip)

Installation
IP244B
C79000–B8576–C865–01
3–12
2.2.2 Digital Outputs and One Digital Input (X4 Female Connector Strip)
DA 17
DA 16
DA 15
DA 14
DA 13
DA 12
DA 11
DA 10
DA 9
DA 8
DA 7
DA 6
DA 5
DA 4
DA 3
DA 2
DA 1
Digital input
"E" (heating
switch)
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
LĆ = Low
 controller OFF
L+ = High
 controller ON
Do not connect a
load here. Pin 20
powers contact
at pin 1
Function
L+
(power
supply to
input E
only)
Pin no.Pin no.Comments Comments
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
E = Digital input
Typical wiring of digital input E (heating switch):
1
20
Switch in position ”Heating switch = OFF”
Heating
switch
24 V (short-circuit-proof)