Siemens S7-400 Marking the Modules with Slot Labels, Slot Number, Fitting Slot Labels

Installing the S7-400

2.14Marking the Modules with Slot Labels

Slot Number

Once the modules are installed, you should mark each one with its slot number to avoid the risk of mixing up modules during operation. If modules do get mixed up, you may have to reconfigure the assembly.

The slot number is printed on the rack.

Double-width modules occupy two slots and are assigned the consecutive slot numbers of both slots.

Triple-width modules occupy three slots and are assigned the consecutive slot numbers of these three slots.

Fitting Slot Labels

You use slot labels to mark a module with its slot number. The slot labels are provided with the rack as a “number wheel”.

To attach the slot labels:

1.Hold the “number dial” on the module and rotate it to the slot number for the module inserted at this slot.

2.Use your finger to press the slot label into the module. The label will break away from the “number wheel”.

Figure 2-6 Fitting a Slot Label

Automation System S7-400	Hardware and Installation	2-33
A5E00850741-01