Specifications

AS-Interface
Masters
CP 243-2
2/18
Siemens LV 1 · 2007
2
■ Overview
The CP 243-2 is the AS-Interface master for the innovative
SIMATIC S7-200 generation. This communications processor
(6GK1 243-2AX01-0AX0) supports the extended AS-Interface
Specification V2.1 and performs the following functions:
• Connection of up to 62 AS-Interface slaves and integrated
analog value transmission (according to the extended
AS-Interface Specification V2.1)
• Supports all AS-Interface master functions according to the
extended AS-Interface Specification V2.1
• Status displays of operating states and indication of the func-
tional readiness of connected slaves by means of LEDs in the
front panel
• Fault indications (e.g. AS-Interface voltage fault, configuration
fault) by means of LEDs in the front panel
• Compact enclosure in the design of the innovative SIMATIC
S7-200 generation
■ Benefits
• More flexibility and versatility in the use of SIMATIC S7-200 as
the result of the distinct increase in the number of digital and
analog inputs/outputs available
• Shorter start-up times through simple configuration at the
press of a button
• Reduction of standstill and servicing times in the event of a
fault thanks to the LED indicators
• Status of the CP
- Indication of all the slaves connected and their readiness for
operation
- Monitoring of the AS-Interface mains voltage
■ Application
The CP 243-2 is the AS-Interface master connection solely for
the 22x CPUs of the innovative SIMATIC S7-200 generation.
Through connection to AS-Interface the number of inputs and
outputs available for S7-200 is greatly increased (max. 248 DI /
186 DO on the AS-Interface per CP).
Furthermore, analog values (per CP a maximum of 31 analog
slaves with up to 4 channels each) also become available on the
AS-Interface for the S7-200 thanks to the integrated analog
value processing.
On the S7-200, up to two CP 243-2 communication processors
can be operated simultaneously.
■ Selection and ordering data
Version DT Order No. Price
per PU
PU
(UNIT,
SET, M)
PS* PG Weight
per PU
approx.
kg
CP 243-2 communications processors A
6GK7 243-2AX01-0XA0 1 1 unit 541 0.204
for connection of SIMATIC S7-200 (2
nd
genera-
tion) to AS-Interface using a bus connector
Manuals for CP 243-2
including AS-Interface Basics and a floppy disk
with sample programs
Paper version
•German D 6GK7 243-2AX00-8AA0 1 1 unit 540 0.909
•English D
6GK7 243-2AX00-8BA0 1 1 unit 540 0.891
• French D
6GK7 243-2AX00-8CA0 1 1 unit 540 0.916
• Spanish D
6GK7 243-2AX00-8DA0 1 1 unit 540 0.898
• Italian D
6GK7 243-2AX00-8EA0 1 1 unit 540 0.895
* You can order this quantity or a multiple thereof.
© Siemens AG 2007