Specifications

AS-Interface Master
Master for SIMATIC S7
CP 142-2
6/73
Siemens IK PI · 2009
6
■ Overview
• Master connection for the ET 200X distributed I/O station to
AS-Interface over a 12-pin connector
• Easy operation in the I/O address area of SIMATIC ET 200X
• No CP configuration required for AS-Interface
• Activation of up to 31 AS-Interface slaves in accordance
with the AS-Interface specification V2.0
• Monitoring of the supply voltage on the AS-Interface shaped
cable
• Significant increase in the number of inputs and outputs of
ET 200X
■ Benefits
• In connection with the BM 147, the ET 200X enables PLC
functionality in degree of protection IP65
• Can also be used in a rugged industrial environment without
additional casing due to the high degree of protection IP67
• More flexible and extended application options of the ET 200X
thanks to considerable increase in available inputs/outputs
• Shorter startup times due to easy configuration at the press of
a button
• Reduction of standstill or service times in the event of a fault
through LED displays:
- status of the AS-Interface network
- connected slaves and their operational readiness
- monitoring of the AS-Interface voltage level
■ Application
The CP 142-2 enables the connection of the distributed I/O
system ET 200X to AS-Interface.
This module can be used to activate up to 31 AS-Interface
slaves and, if bi-directional slaves are implemented, up to
248 binary components.
Up to 6 CP 142-2 can be operated on the ET 200X.
■ Design
• 16 byte inputs and 16 byte outputs are used in the address
space of the ET 200X
• Operating statuses displayed by LEDs in the frontplate
• Display of the connected and activated slaves and their
operational readiness by LEDs
• One pushbutton for switching the operating status, entering
the existing configuration and switching the display
• Connection of the AS-Interface cable to M12 connector
• Monitoring of the supply voltage on the AS-Interface cable
■ Function
The CP 142-2 can be used in two operating modes:
• Standard mode with BM 141/BM 142/BM 147
• A maximum of 124 input bits and output bits of the
AS-Interface slaves can be addressed.
• Extended mode with BM 147
An FC (Function Call) enables master calls to be used in
accordance with the AS-Interface specification V2.0 (e.g.
write parameters). The calls are described in the manual.
Program examples are supplied with the manual.
Example configuration
Configuration
Parameterization of the CP 142-2 is performed with the STEP 7
basic package V2.1 and higher. No additional configuration is
required for AS-Interface.
AS-Interface Master
ET 200X
with CP 142-2
PROFIBUS
AS-Interface
G_IK10_XX_20013