Siemens S5-135U/155U appendix Example of connection designation for an input X20 2 I

Digital Input/Output Modules

	Connection of				Front Strip
	Process Signal				LED Pin
	Lines
		F+		1
		F±
				2
1N		1N
				4
		1I0.0		6	g
		1I0.1		8	g
		1I0.2
				10	g
		1I0.3	12		g

Block Diagram of

Module Inputs

+5V

t

t

t

t

t

Example of connection designation for an input:

x20 (2) I 1.2

1)

Input 2 (2nd bit); 0 to 7 possible

Address of input byte (1st byte);

0 to 255 possible

I = Input

1I0.4

1I0.5

1I0.6

1I0.7

14 g

16 g

18 g

20 g

t
t
t	Isolation
t

2nd group (not specified in the address)

S5 Bus Control

2N	2N
		25
2L	2I1.0		g
		27
	2I1.1		g
		29
	2I1.2		g
		31
	2I1.3
		33	g

t

t

t

t

Data Memory and

2I1.4

2I1.5

2I1.6

2I1.7

35 g

37 g

39 g

41 g

t
t
t	Isolation
t
	Shield

g F+/F-

1)

=Green LED (status indicator)

=Enable input (jumper in front connector) Changeover of enable mode with jumper X20: Jumper inserted = Enable input active (factory setting) Jumper open = Enable input inactive.

System Manual	8-43
C79000-G8576-C199-06