Preface - Siemens AS-i Master CM 1243-2 a Manual

Preface

Purpose of this manual
This manual supports you in using the following AS-i modules:
● AS-i master CM 1243-2
● AS-i data decoupling unit DCM 1271
We recommend the following procedure if ...
● ... you want to gain an overview of the complete topic of AS-Interface:
First read the manual "System Manual AS-Interface (Edition 11/2008) with Supplements
(Edition 09/2010)" (order number: 3RK2703-3BB02-1AA1)
There you will find general information about AS-Interface, referred to below as AS-i.
The manual is available on the Internet
(http://support.automation.siemens.com/WW/view/de/26250840/0/en).
● ... you are configuring an AS-i system and commissioning it and are using the
AS-i master CM 1243-2 and the AS-i data decoupling unit DCM 1271:
You will find the necessary information regarding connection and operation of the
AS-i master CM 1243-2 in the following sections:
– "Technical description (Page 11)"
– "Displays and connections of the AS-i data decoupling unit DCM 1271 (Page 23)"
– "Installation, connection and commissioning of the modules (Page 29)"
– "Configuring with STEP 7 (Page 37)"
● ... you want to know how the AS-i master CM 1243-2 must be operated from the
viewpoint of the automation system:
– Read section "Data exchange between the user program and AS-i slaves (Page 47)"
● ... you want to know how to diagnose and rectify faults in the system:
– Read section "Diagnostics (Page 99)" in this manual
– Read section "Troubleshooting / fault displays (Page 105)" in this manual
AS-i master CM 1243-2 and AS-i data decoupling unit DCM 1271 for SIMATIC S7-1200
Manual, 04/2013, A5E02655230010A/RS-AA/003
in this manual
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