Overview Of The Module; Uses Of The Module - Siemens SIMATIC NET CP 343-2 Manual

1 Technical Description
1.2

Overview of the Module

1.2.1

Uses of the Module

The CP 343-2 module can be operated in the automation systems (AS or PLC) of
the S7-300 series and in the ET 200M system. It allows the connection of an AS-i
chain to the programmable controllers listed above.
Using the CP 343-2, you can access the inputs and outputs on the AS-i slaves
from the PLC. Depending on the slave type, you can access binary values or
analog values.
All AS-i slaves complying with AS-i specification V3.0 can be operated except for
slaves complying with slave profile 7.1 and 7.2.
AS-i power supply unit
Binary sensors/actuators
with slave ASIC
Actuator/sensor
with direct connection
Figure 1-1
12
S7−300
Passive module
(without slave ASIC)
AS-i cable
Using the CP 343-2 Master Module in the S7-300
CP 343-2
Active module
(with slave ASIC)
Binary actuators/
sensors without
slave ASIC
Branch of the AS-i
cable
CP 343−2 / CP 343−2 P AS−Interface Master
Release 08/2008
C79000−G8976−C149−04