Siemens S5-135U/155U System Manual page 369

Connection of Front Strip
Process Signal
Lines
LED Pin
F+
1
F–
2
r
1L
1L
r
4
1N 1Q0.0
6
g
1Q0.1
8
g
1Q0.2
10
g
1Q0.3
g
12
1Q0.4
g
14
1Q0.5
g
16
1Q0.6
g
18
1Q0.7
g
20
r
2L
2L
25 r
2N
2Q1.0
g
27
2Q1.1
g
29
2Q1.2
g
31
2Q1.3
g
33
2Q1.4
g
35
2Q1.5
g
37
2Q1.6
g
39
2Q1.7
41 g
g = Green LED (status indicator)
r = Red LED (short-circuit indicator)
F+/F– = Enable input
1)
Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
System Manual
C79000-G8576-C199-06
Block Diagram of
Example of connection designation
Module Inputs
for an output:
(2) Q 1.2
+5V
x20
t
1)
F2
F1
F4
F3
Shield
Digital Input/Output Modules
Output 2 (2nd bit);
0 to 7 possible
Address of output byte
(1st byte);
0 to 255 possible
Q = Output
2nd terminal L+ (not
specified in the ad-
dress)
8-57