Siemens EK 746 Series Instrukcje Operacyjne Pobierz pdf (Strona 26)

Connecting up

SCALANCE W788-xPRO / W74x-1PRO/RR

26 A5E02280448-02, Release 11/2008

Replacing the C-PLUG

Procedure

Follow the steps below to replace the C-PLUG of a SCALANCE W788-xPRO/RR or

W74x-1PRO/RR:

Note

In terms of the C-PLUG, the WLAN devices work in two modes:

● Without C-PLUG

The device stores the configuration in internal memory. This mode is active when

no C-PLUG is inserted.

● With C-PLUG

The configuration stored on the C-PLUG is displayed over the user interfaces. In

this mode, the internal memory is neither read nor written. If changes are made to

the configuration, the device stores the configuration directly on the C-PLUG. This

mode is active when a C-PLUG is inserted. As soon as the device is started with

a C-PLUG inserted, the WLAN device starts up with the configuration data on the

C-PLUG.

1. Turn off the power to the device.

2. Remove the old SCALANCE W788-xPRO/RR or W74x-1PRO/RR from its

mounting and open the sealing screw on the rear with a coin or broad

screwdriver.

3. Remove the C-PLUG.

4. Open the sealing screw of the new device in the same way and insert the C-

PLUG of the old device.

5. Replace the sealing screws of both devices.

If a new C-PLUG is inserted in a SCALANCE W788-xPRO/RR or W74x-1PRO/RR,

the configuration stored locally on the device is saved to the C-PLUG. If an incorrect

C-PLUG (for example from another device or a damaged plug) is inserted, the device

signals an error with the red LED. The user then has the choice of either removing

the C-PLUG again or selecting the option to reformat the C-PLUG and use it.

Note

It is essential that the configuration on the C-PLUG was generated with a firmware

version ≤ the firmware version on the destination device.

Example: A C-PLUG with version V3.0 cannot be used for a SCALANCE W78x with

firmware version V2.4.

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Siemens EK 746 Series Instrukcje Operacyjne Strona 26