Siemens S5-135U/155U System Manual page 343

Connection of Front Strip
Process Signal
Lines
LED Pin
F+
1
2
3
L+
1I0.0
g
4
1I0.1
g
5
1I0.2
g
6
1I0.3
g
7
1I0.4
g
8
1I0.5
g
9
1I0.6
g
10
1I0.7
g
11
12
1I1.0
g
13
1I1.1
g
14
1I1.2
g
15
1I1.3
g
16
1I1.4
g
17
1I1.5
g
18
1I1.6
g
19
1I1.7
20
g
21
22
23
24
1I2.0
g
25
1I2.1
26 g
1I2.2
27 g
1I2.3
28 g
1I2.4
g
29
1I2.5
30 g
1I2.6
31 g
1I2.7
g
32
33
1I3.0
g
34
1I3.1
g
35
1I3.2
g
36
1I3.3
g
37
1I3.4
g
38
1I3.5
g
39
1I3.6
g
40
1I3.7
41 g
42
g = Green LED (status indicator)
F+ = Enable input
Connect L- of the power supply unit to the reference potential (PE).
1)
Changeover of enable mode with jumper X20:
Jumper inserted = Enable input active (factory setting)
Jumper open = Enable input inactive.
2)
The terminal is not connected internally. Even when this terminal is connected to input voltages, the clearances in air
and leakage paths remain adequate to UL, CSA and VDE.
System Manual
C79000-G8576-C199-06
Block Diagram of
Example of connection designation
Module Inputs
for an input:
x20
(1) I 1.5
t
1)
2)
2)
t
t
t
2)
t
t
2)
2)
2)
2)
t
t
2)
t
t
M
ext.
M
ext.
(L–)
Digital Input/Output Modules
Input 5 (5th bit);
0 to 7 possible
Address of input byte
(1st byte);
0 to 255 possible
I = Input
1st group (not specified
in the address)
8-31