Siemens Simatic S7-400 - Manual (Page 439)

CPUs for M7-400
11-11
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
11.3.4 Submodule Receptacles for Interface Submodules
Submodule Receptacle Definition
The submodule receptacle is a slot for a submodule. The CPU 486-3 and
CPU 488-3 have a receptacle for the memory card and two submodule receptacles
for interface submodules.
Figure 11-4 shows the position of the two receptacles for interface submodules on
the CPU 486-3 and CPU 488-3.
Submodule
receptacle
Figure 11-4 Position of the Receptacles for Interface Submodules on the CPU 486-3 and
CPU 488-3