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Functional Description
6.5
Multiprocessor Operation
In the S5-135U and S5-115U PLCs with multiprocessor capability,the IP 240 can also be used when
these PLCs are equipped with more than one processor.
Note that an IP 240 can be addressed by one processor only. The IP 240 must be assigned to the
CPU with which it is to interchange data.
CPU
S5-135 U
S5-155 U
CPU
Fig. 6-1. Data Interchange in Programmable Controllers with Multiprocessor Capability
Note
A wait time of 100 ms mut be programmed for the IP 240 in the restart OBs (OB20,
21 and 22) prior to the first function block call.
Failure to do so may result in an abort of the first attempt at data interchange with
the IP 240.
6-8
1
2
IP 240
1
IP 240
2
One of the two connections is allowed,
but not in combination
IP 240
3
IP 240
4
IP 240
EWA 4NEB 811 6120-02a
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