Siemens CP 243-2 - Manual (Page 14)

Technical Description and Installation Instructions
1-6
SIMATIC NET CP 243-2 AS-i Master
C79000-G8976-C142/02
1.4 Installing the Module
Slots in the S7-200
The CP 243-2 can be inserted in all slots for expansion modules in the S7-200
programmable controller (CPUs 22x).
Possible Restrictions
There may, however, be restrictions depending on the CPU or power supply unit
being used in terms of the following:
S
Expandability with several expansion modules,
For further information, refer to /4/;
S
Electrical restrictions
The maximum current consumption from the S7 backplane bus must not be
exceeded. Please use the calculation table in /4/.