Siemens Automation System S7-400 Manual do Utilizador descarregar pdf (Página 140)

Commissioning

6-12

Automation System S7-400 Hardware and Installation

A5E00850741-01

Inserting a Memory Card

To insert a memory card, follow the steps outlined below:

1. Set the mode selector switch on the C PU to STOP.

2. Insert the memory card in the submodule slot of the CPU and push the memory

card in as far as it will go.

Note the position of the marker dot. You can only insert the memory card in the

card slot in the direction shown in Figure 6-3.

Result: The CPU requests a memory reset by slow flashing of the STOP LED

at 0.5 Hz.

3. Perform a memory reset on the CPU by pressing the mode selector switch in

MRES position and then resetting it to STOP.

Result: The STOP LED flashes for at least 3 seconds at 2 Hz (reset is being

executed) and then remains lit.

Marker dot

Figure6-3 InsertingaMemoryCardinaCPU

Note

If you insert or remove the memory card with the c ontroller switched on, the C PU

inidcates a memory reset request by the slow flashing of the STOP indicator at 0.5

Hz.

If you insert or remove the memory card with the c ontroller switched off, the CPU

performs an automatic memory reset after power on.

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Siemens Automation System S7-400 Manual do Utilizador Página 140