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5 Performance Data / Operation

B−41

CP 343-1 Advancedfor Industrial Ethernet / Manual Part B

Release 06/2008

C79000-G8976-C202-04

Example

The CP 343-1 Advanced can transfer a maximum of 41 array elements of the type

DWORD or REAL with a read job since each element of the type DWORD or

REAL occupies four bytes.

5.9 Characteristics of the C-PLUG

The flash area allows a limited number of write cycles.

S Number of write cycles: approx. 100 000

Recommendation: You should therefore avoid writing data cyclically.

5.10 Characteristic data of the integrated switch

Learning addresses / deleting addresses (aging time)

The switch integrated in the CP (PROFINET interface) reads the source addresses

in the data packets. The switch therefore learns the addresses of the end devices

connected via a port.

If the switch receives a data packet, it directs this packet only to the port via which

the appropriate DTE can be obtained.

The switch monitors the age of the learned addresses. Addresses that exceed the

“aging time” are deleted. The aging time is 5 minutes.

Ports can be deactivated individually

The ports of the switch integrated in the CP and the gigabit interface can be

deactivated individually in STEP 7 / HW Config. This can, for example, be used for

service purposes.

To do this, open the properties dialog of the relevant port and select the “disabled”

setting under “Options > Transfer medium / duplex”.

The port is turned off completely when it is deactivated. The corresponding LED on

the device (for example P1) is then turned off.

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