Siemens S5-135U/155U - Manual (Page 13)

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System Manual
C79000-G8576-C199-06
To operate two or more CPUs in multiprocessor mode in your PLC, you will
need Chapter 6.
S
Chapter 6 describes multiprocessor operation. This chapter contains all
the measures you must take for startup of the PLC in multiprocessor
operation. Described in Sections 6.5 and 6.6 are the 923C and 923A
coordinators.
In Chapter 11 are the connector assignments of the individual modules and
subracks.
The Appendix contains the ordering data for the products described in this
manual, references to further reading and the index of keywords in this
manual.
Notes on Using this Manual and on the CE Symbol