SIEMENS
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Siemens IK PI · 2015
AS-Interface
Masters
Masters for SIMATIC ET 200
CM AS-i Master ST for SIMATIC ET 200SP
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Overview
CM AS-i Master ST for SIMATIC ET 200SP
The CM AS-i Master ST communication module is designed for
use in the SIMATIC ET 200SP distributed I/O system and has the
following features:
•
Connection of up to 62 AS-Interface slaves
•
Supports all AS-Interface master functions according to the
AS-Interface Specification V3.0
•
User-friendly configuration with graphic display of the AS-i line
in TIA Portal V12.0 or in other systems using GSD
•
Supply via AS-Interface cable
•
Suitable for AS-i Power24V and for AS-Interface with 30 V
voltage
•
Integrated ground-fault monitoring for the AS-Interface cable
•
Through connection to AS-Interface, the number of digital
inputs and outputs available for the control system is greatly
increased (max. 496 DI/496 DO on the AS-Interface per
CM AS-i Master ST).
•
Integrated analog value processing (all analog profiles)
Basic unit: ET 200SP distributed I/O system
The SIMATIC ET 200SP is a scalable and highly flexible distrib-
uted I/O system for connecting the process signals to a central
control system via PROFIBUS or PROFINET.
Up to eight CM AS-i Master STs can be plugged into a SIMATIC
ET 200SP with the IM 155-6 PN standard interface module.
For more information, see "SIMATIC ET 200SP ET 200SP
Distributed I/O System" System Manual,
.
Design
The CM AS-i Master ST module has an ET 200SP module enclo-
sure with a width of 20 mm. A C0 type BaseUnit (BU) is required
for use in the ET 200SP.
The module has LED indicators for diagnostics, operation, AS-i
voltage and AS-i slave status and offers informative front-side
module inscription for
•
Plain-text marking of the module type and function class
•
2D matrix code (article number and serial number)
•
Circuit diagram
•
Color coding of the CM module type: Light gray
•
Hardware and firmware version
•
Complete article number
Function
The CM AS-i Master ST
supports all specified functions of the
AS-Interface Specification V3.0.
The input/output values of the digital AS-i slaves can be
activated via the cyclic process image. The values of the analog
AS-i slaves can be reached via data record transfer.
If required, master calls can be performed with the command
interface, e.g. read/write parameters, read/write configuration.
Changeover of the operating mode, automatic application of
the slave configuration and the re-addressing of a connected
AS-i slave can be implemented via the control panel of the
CM AS-i Master ST in the TIA Portal.
Notes on safety:
The use of this product requires suitable protective measures
(e.g. network segmentation for IT security among others) in
order to ensure safe plant operation, see
www.siemens.com/industrialsecurity
.
Configuration
The following software is required for configuration of the
CM AS-i Master ST module:
•
STEP 7 (classic), V5.5 SP3 HF4 or higher with HSP 2092 or
•
STEP 7 (TIA Portal), V12 or higher or
•
the GSD file of the ET 200SP with STEP 7 or another engineer-
ing tool
The TIA Portal enables user-friendly configuration and
diagnostics of the AS-i master and, in the event of interfacing
to a SIMATIC S7-300/S7-400 station, any connected slaves.
Alternatively, you can also apply the AS-Interface ACTUAL con-
figuration as the DESIRED configuration at the "touch of a button"
via the control panel integrated in the TIA Portal or connection of
an optional button. Configuration with the GSD file is possible
only with the button.
Configuration of an AS-Interface network with CM AS-i Master ST
via TIA Portal
The CM AS-i Master ST module occupies 32 input bytes and
32 output bytes in the I/O data of the ET 200SP station.
© Siemens AG 2014