Configuring
4.6 Distribution of modules to several racks
S7-300, CPU 31xC and CPU 31x: Installation
4-10
Operating Instructions, Edition 08/2004, A5E00105492-05
Example: Full assembly using four racks
The figure shows the arrangement of modules in an S7-300 assembly on 4 racks.
IM
IM
CPU
PS
SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8
PS
PS
4
3
2
1
5
4
6
SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8
SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8
SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8
IM
IM
IM
IM
5
5
The figure illustrates the following
(1)
Rack 0 (central unit)
(2)
Rack 1 (expansion module)
(3)
Rack 2 (expansion module)
(4)
Rack 3 (expansion module)
(5)
The connecting cable 368
(6)
Restriction for CPU 31xC. When this CPU is used, do not insert SM 8 into Rack 4.