Siemens SIMATIC NET CP 343-2 Manual page 19

LED Meaning
S
Configuration Mode
The configuration mode is used during AS-i installation and commissioning.
In the configuration mode, the CP 343-2 can exchange data with every AS-i
slave connected to the AS-i cable (except for the AS-i slave with address '0').
Any AS-i slaves that are added later are detected immediately by the master
and activated and included in the cyclic data exchange.
When installation and startup is completed, the CP 343-2 can be switched to
the protected mode using the SET button. Any AS-i slaves active at this point
are therefore configured.
The following data of the AS-i slaves is stored in non-volatile memory on the
CP 343-2:
− the PLC addresses
− the ID codes
− the I/O configuration
S
Protected Mode
In the protected mode, the CP 343-2 exchanges data only with the configured
AS-i slaves. In this sense, "configured" means that the slave addresses and
the configuration data stored on the CP 343-2 match the values of existing
AS-i slaves.
SET Button
The SET button is required for configuring the CP 343-2 in standard operation. The
button is only activated when the PLC is in the STOP mode.
If the CP 343-2 is in the configuration mode (CM LED lit), the CP 343-2 is
configured automatically when the button is pressed. Configuration involves the
following steps:
1. The CP 343-2 saves the existing slave configuration as indicated by the LEDs
of the active slaves as the expected configuration.
2. The CP 343-2 then changes to the protected mode.
If the CP 343-2 is in the protected mode ("CM" LED is not lit), pressing the button
on the CP switches to the configuration mode.
For information on the method, refer to Section 1.6.
Display of the Detected and Activated AS-i Slaves
The detected and activated slaves are indicated by the LEDs 0 to 9 and the LEDs
10+, 20+, B. The activated slaves are displayed in groups of ten. The switchover is
time-controlled. The LEDs labeled 10+, 20+ indicate which group of 10 is currently
displayed by LEDs 0 to 9. If the "B" LED is lit, this indicates that the detected and
activated slaves are slaves from the extended address area B.
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04
1 Technical Description
19