Siemens Simatic S7-300 CPU 31xC Series

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Installing

5.4 Labeling the modules

S7-300, CPU 31xC and CPU 31x: Installation

Operating Instructions, Edition 08/2004, A5E00105492-05

5-9

5.4 Labeling the modules

Slot numbers Assignment

You should assign a slot number to each one of the mounted modules, thus making it easier

to assign the modules in the configuration table in STEP 7. The table below shows the slot

number assignment.

Table 5-4 Slot numbers for S7 modules

Slot number Module Comment

1 Power supply (PS) –

2 CPU –

3 Interface module (IM) to the right of the CPU

4 1. Signal module (SM) to the right of the CPU or IM

5 2. Signal module (SM) –

6 3. Signal module (SM) –

7 4. Signal module (SM) –

8 5. Signal module (SM) –

9 6. Signal module (SM) –

10 7. Signal module (SM) –

11 8. Signal module (SM) –

Siemens Simatic S7-300 CPU 31xC Series - Labeling the Modules