Siemens S5-135U/155U appendix Addressing, 1st MM 2nd MM 3rd MM Last EU, Without S5-DOS With S5-DOS

Monitoring Module

10.3.1Addressing

Example 1	S5-130K, S5-135U or S5-155U
	1st MM					2nd MM				3rd MM in the
										last EU
	S1	e.g.	127	(7FH)	3)	e.g.	126	(7EH)	3)	85	(55H)	4)
	S2	e.g.	127	(7FH)	3)	e.g.	126	(7EH)	3)	170	(AAH)	4)
	S3		85	(55H)	5)		85	(55H)	5)	85	(55H)	5)
	S4		170	(AAH)	5)		170	(AAH)	5)	170	(AAH)	5)

User program in OB 1 or FB 0
without S5-DOS			with S5-DOS
L	EB	127	L	PY	127
T	AB	127	T	PY	127
L	EB	126	L	PY	126
T	AB	126	T	PY	126
L	EB	85	L	PY	85
T	PB	170	T	PY	170
BE			BE

3)Possible addresses 0 (00H) to 255 (FFH)

4)To achieve optimum fault detection, set the inverse addresses 85 (55H) and 170 (AAH) at S1 and S2.

5)Since the addresses of the monitoring module switches S3 and S4 are not acknowledged, this must be done by the monitoring module contained in the last expansion unit (the most remote from the central controller). The addresses 85 (55H) or 170 (AAH) of this monitoring module must be coded at switches S1 or S2, respectively.

These addresses may no longer be occupied for I/O tasks.

10-10	System Manual
	C79000-G8576-C199-06