Siemens Simatic S7-1500 User manual

CM PtP RS422/485 BA communication
module (6ES7540 
‑1AB00‑0AA0)
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SIMATIC
S7-1500/ET 200MP
CM PtP RS422/485 BA
communication module
(6ES7540‑1AB00‑0AA0)
Manual
01/2013
A5E03777484-01
Preface
Documentation guide
1
Product overview
2
Connecting
3
Parameters/address space
4
Programming
5
Error and system messages
6
Technical specifications
7
Dimensional drawing
A

Siemens AG
Industry Sector
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A5E03777484-01
Ⓟ 12/2012 Technical data subject to change
Copyright © Siemens AG 2013.
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editions.

CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
Manual, 01/2013, A5E03777484-01 3
Preface
Purpose of the documentation
This device manual complements the system manual S7 1500 Automation System
(http://support.automation.siemens.com/WW/view/en/59191792). General functions of the
S7-1500 are described in the S7-1500 Automation System System Manual.
Conventions
This documentation contains figures of the described device. The figures may differ slightly
from the devices supplied.
Please also observe notes marked as follows:
Note
A note contain important information on the product described in the documentation, on the
handling of the product and on the section of the documentation to which particular attention
should be paid.
Note on IT security
Siemens offers IT security mechanisms for its automation and drive product portfolio in order
to support the safe operation of the plant/machine. We recommend that you inform yourself
regularly on the IT security developments regarding your products. You can find information
on this on the Internet (http://support.automation.siemens.com).
You can register for a product-specific newsletter here.
For the safe operation of a plant/machine, however, it is also necessary to integrate the
automation components into an overall IT security concept for the entire plant/machine,
which corresponds to the state-of-the-art IT technology. You can find information on this on
the Internet (http://www.siemens.com/industrialsecurity).
Products used from other manufacturers should also be taken into account here.

Preface
CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
4 Manual, 01/2013, A5E03777484-01
Copyright notice for the open-source software used
Open-source software is used in the firmware of the product described. The open-source
software is provided free of charge. We are liable for the product described, including the
open-source software contained in it, pursuant to the conditions applicable to the product.
Siemens accepts no liability for the use of the open source software over and above the
intended program sequence, or for any faults caused by modifications to the software.
For legal reasons, we are obliged to publish the original text of the following copyright
notices.
© Copyright William E. Kempf 2001
Permission to use, copy, modify, distribute and sell this software and its documentation for
any purpose is hereby granted without fee, provided that the above copyright notice appear
in all copies and that both that copyright notice and this permission notice appear in
supporting documentation. William E. Kempf makes no representations about the suitability
of this software for any purpose. It is provided "as is" without express or implied warranty.
Copyright © 1994 Hewlett-Packard Company
Permission to use, copy, modify, distribute and sell this software and its documentation for
any purpose is hereby granted without fee, provided that the above copyright notice appear
in all copies and that both that copyright notice and this permission notice appear in
supporting documentation. Hewlett-Packard Company makes no representations about the
suitability of this software for any purpose. It is provided ``as is'' without express or implied
warranty.

CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
Manual, 01/2013, A5E03777484-01 5
Table of contents
Preface ...................................................................................................................................................... 3
1 Documentation guide................................................................................................................................. 7
2 Product overview ....................................................................................................................................... 9
2.1 Properties.......................................................................................................................................9
2.2 Accessories..................................................................................................................................11
2.3 Functions......................................................................................................................................12
2.4 Properties of the RS422/485 interface.........................................................................................14
3 Connecting .............................................................................................................................................. 15
3.1 RS422/485 (X27) interface of the communication module..........................................................15
3.2 Installation guidelines...................................................................................................................16
4 Parameters/address space...................................................................................................................... 17
4.1 Parameter assignment.................................................................................................................17
4.2 Reaction to CPU STOP ...............................................................................................................17
4.3 Address space .............................................................................................................................18
5 Programming ........................................................................................................................................... 19
6 Error and system messages .................................................................................................................... 21
7 Technical specifications........................................................................................................................... 23
A Dimensional drawing ............................................................................................................................... 27

Table of contents
CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
6 Manual, 01/2013, A5E03777484-01

CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
Manual, 01/2013, A5E03777484-01 7
Documentation guide 1
Introduction
This modular documentation of the SIMATIC products covers diverse topics concerning your
automation system.
The complete documentation for the S7-1500 and ET 200MP automation systems consists
of system manuals, function manuals and manuals.
The STEP 7 information system (Online Help) also helps you configure and program your
automation system.
Overview of the documentation provided for the CM PtP RS422/485 BA communication module
The following table lists additional references that you will need when using the
CM PtP RS422/485 BA communication module.
Table 1- 1 Documentation for the CM PtP RS422/485 BA communication module
Topic Documentation Key content
System manual S7 -1500 Automation System
(http://support.automation.siemens.com/WW/vi
ew/en/59191792)
System manual ET 200MP distributed I/O
system
(http://support.automation.siemens.com/WW/vi
ew/en/59193214)
System manual ET 200SP distributed I/O
system
(http://support.automation.siemens.com/WW/vi
ew/en/58649293)
•Application planning
•Installation
•Connecting
•Addressing
•Commissioning
•Maintenance
Power supply manuals
(http://support.automation.siemens.com/WW/vi
ew/en/59173914)
CPU manuals
(http://support.automation.siemens.com/WW/vi
ew/en/56926947)
•Connecting
•Interrupt, error and
system messages
•Technical specifications
•Dimensional drawing
System description
Function manual EMC/EMI compatible
installation of control systems
(http://support.automation.siemens.com/WW/vi
ew/en/59193566)
•Basics
•Electromagnetic
compatibility
•Lightning protection

Documentation guide
CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
8 Manual, 01/2013, A5E03777484-01
Topic Documentation Key content
Point-to-point
communication
Function manual CM PtP - Configurations for
point-to-point connections
(http://support.automation.siemens.com/WW/vi
ew/en/59057093)
•Basic information
•Data transmission
functions
•Diagnostics functions
SIMATIC manuals
All current manuals for the SIMATIC products are available for download free of charge on
the Internet (http://www.siemens.com/automation/service&support).

CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
Manual, 01/2013, A5E03777484-01 9
Product overview 2
2.1 Properties
Order number
6ES7540-1AB00-0AA0
View of the module
Figure 2-1 CM PtP RS422/485 BA view

Product overview
2.1 Properties
CM PtP RS422/485 BA communication module (6ES7540‑1AB00‑0AA0)
10 Manual, 01/2013, A5E03777484-01
Properties
The communication module has the following properties:
● Technical properties
– RS422/485 interface
– short-circuit proof
– electrically disconnected
– Protocols: 3964(R), Freeport and USS with instructions
● Supported system functions
– Firmware update
– Identification data I&M0
– Parameter re-assignment in CPU RUN mode (using instructions)
– Diagnostic interrupts
Additional information
Additional information on the properties of the CM PtP RS422/485 BA can be found in the
function manual CM PtP - Configurations for point-to-point connections
(http://support.automation.siemens.com/WW/view/en/59057093).
Additional information on the properties of the S7-1500 and associated modules can be
found in the system manual S7 -1500 Automation System
(http://support.automation.siemens.com/WW/view/en/59191792).