Siemens SIMATIC NET CP 343-1 Uživatelský manuál stáhnout pdf (Strana 20)

3 Installation and Commissioning

B−20

CP 343-1 Advancedfor Industrial Ethernet / Manual Part B

Release 06/2008

C79000-G8976-C202-04

Principle

The power is supplied by the basic device. When powered down, the C−PLUG

retains all data permanently.

Flash components are used in the C−PLUG in which the number of write

operations is limited.

This must be taken into account when using blocks in the user program that write

data to the C−PLUG (for example FB55 with changing IP parameters). Refer to the

information in Section 5.9.

Inserting in the C-PLUG slot

The slot for the C-PLUG is on the rear panel of the device.

The C-PLUG is inserted in the receptacle.

Notice

The C−PLUG must be inserted or removed only when the power is off!

Figure 3-2 Fitting the C-PLUG and removing it from the CP with a screwdriver

Function

If the C-PLUG has not yet been written to (as shipped), when the device starts up,

all the configuration data of the CP is saved automatically on it. Modifications to

the configuration during operation are also saved on the C−PLUG without any

action by the user being necessary.

If the C-PLUG is inserted, the basic device automatically uses the configuration

data of the C-PLUG. This assumes that the data was written by a compatible

device type.

If a fault occurs, the basic device can then be replaced much faster and more

simply. If a device needs to be replaced, the C-PLUG is simply taken from the

failed component and inserted in the replacement. As soon as it starts up, the

replacement automatically has the same device configuration as the failed device.

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Siemens SIMATIC NET CP 343-1 Uživatelský manuál Strana 20