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1 Technical Description

CP 343−2 / CP 343−2 P AS−Interface Master

Release 08/2008

C79000−G8976−C149−04

Meaning of the Indicators and Operator Controls:

LED Meaning

SF System fault.

The LED is lit when:

S The CP 343-2 is in the protected mode and an AS-i configuration error has

occurred (for example slave failed)

S The CP detects an internal fault (for example EEPROM defective)

S In response to a button command, the CP cannot execute the required mode

change at the present time (for example, because there is a slave with

address 0).

RUN Indicates that the CP has started up correctly.

APF AS-i Power Fail.

This indicates that the voltage supplied to the AS-i cable by the AS-i power

supply unit is too low or there is a complete power outage.

CER Configuration Error.

This LED indicates whether the slave configuration detected on the AS-i cable

matches the configuration configured on the CP (LPS). If they do not match, the

CER LED is lit.

The CER LED is lit in the following situations:

S When a configured AS-i slave does not exist on the AS-i cable

(for example failure of the slave).

S When a slave exists on the AS-i cable but it has not been configured

S When an attached slave has different configuration data (I/O configuration, ID code)

from the slave configured on the CP.

S When the CP is in the offline phase.

AUP Autoprog available.

In the protected mode of the CP, this indicates that automatic address

programming of a slave is possible. Automatic address programming makes it

easier to replace a defective slave on the AS-i cable (for more detailed

information, see Chapter 5.2.12).

CM Configuration Mode.

This LED indicates the mode.

Indicator on: configuration mode

Indicator on: protected mode

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Siemens CM343 Series Wartungshandbuch Seite 18