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The AS-i Masters

2-2

SIMATIC NET AS-Interface – Introduction and Basic Information

C79000-G8976-C089/03

2.1 AS-i Masters for the SIMATIC S7-200

CP 242-2 (Standard AS-i Master)

The CP 242-2 module allows the connection of an AS-i chain to the S7-200

programmable logic controller. The CP 242-2 provides the complete functionality of

the AS-i master specification for standard AS-i masters (profile M1).

Branch

(with integrated

AS-i connection)

AS-i cable

S7-200 CPU

SIMATIC

S7–200

CPU 212

SIEMENS

CP 242-2

AS-i master

Passive module

Active module

AS-i power supply

Actuator/sensor

(with integrated

AS-i connection)

(without integrated

AS-i connection)

Figure 2-1

CP 243-2 (Extended AS-i Master)

The CP 243-2 module allows connection of an AS-i chain to the new S7-200 series

(CPU 222, CPU 224, etc.). The CP 243-2 is an extended master complying with

profile M1e; in other words, it covers the complete functionality of the AS-i master

specification for extended AS-i masters.

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