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1.7
Modes
The CP recognizes two modes:
S Configuration mode
S Protected mode
Configuration mode
The configuration mode is used during AS-i installation and startup.
You can change the CP module from protected mode (productive operation) to
configuration mode with the "SET" button. ("CM" LED is lit, see Section 1.6).
In Configuration mode, the CP can exchange data with every AS-i slave connected
to the AS-i cable. Any AS-i slaves that are added later are detected immediately by
the master, activated and included in the cyclic data exchange.
Protected mode
In protected mode, the CP exchanges data only with the configured AS-i slaves.
After configuring with the "SET" button, activate protected mode by pressing the
"SET" button again, the "CM" LED goes off.
1.8
Permitted Slots for the CP 343-2 in the SIMATIC S7-300
and in the ET 200M
In principle, the CP can be installed in all the slots for I/O modules in the S7-300
and ET 200M.
There may, however, be restrictions depending on the CPU or power supply unit
being used in terms of the following:
S The expandability with several racks (multi-tier expansion of the PLC only with
the CPU 314 and higher),
S The electrical configuration, in other words the total current consumption from
the S7 backplane bus.
For more detailed information, refer to the relevant SIMATIC system manuals /4/.
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04
1 Technical Description
23
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