Siemens S5-135U/155U appendix X20 Data Memory and S5 Bus Control

Digital Input/Output Modules

Connection of			Front Strip
Process Signal
Lines			LED	Pin
L+	F+	1
L±	F±
		2
L+	1L+
		3	r
	1Q0.0
		4	g
	1Q0.1	5
		6	g
	1Q0.2	7
		8	g
	1Q0.3	9
		10	g
		11
	2Q0.4	12	r
		13	g
	2Q0.5	14
		15	g
	2Q0.6	16
		17	g
	2Q0.7	18
L+		19	g
	2L+	20
L±
		21
H±	H+
		22
L+	3L+	23
		24	r
	3Q1.0
		25	g
	3Q1.1	26
		27	g
	3Q1.2	28
		29	g
	3Q1.3	30
		31	g
		32
	4Q1.4	33	r
		34	g
	4Q1.5	35
		36	g
	4Q1.6	37
		38	g
	4Q1.7	39
L+		40	g
	4L+	41
	L±
		42

Block Diagram of
Module Inputs
	t
F1
2)
2)
2)
2)
2)
2)
2)
2)
F2
Short-
Circuit
2)
F3
2)
2)
2)
2)
2)
2)
2)
2)	Isolation
F4
L±
	Shield

x20

1)

Data Memory and S5 Bus Control

Example of connection designation for an output:

(4) Q 1.6

Output 6 (6th bit); 0 to 7 possible

Address of output byte (1st byte);

0 to 255 possible

Q = Output

4th terminal L+ (not specified in the ad- dress)

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.

2)The terminal is not connected internally. When this terminal is connected to the output voltages, the clearances in air and leakage paths are no longer adequate to UL and CSA, but comply with VDE.

System Manual	8-55
C79000-G8576-C199-06