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Opening the device VBG-PB-K20-DMD 576 A1745 by clicking on the plug sign in
the hardware catalog causes a list to appear of the possible PROFIBUS commu-
nication modules.
Which module you select for the desired PROFIBUS communication depends on
which version of the AS-i circuit you have and on the desired communication pos-
sibilities.
For simple transmission of the data bits in an AS-i circuit with AS-i standard sen-
sors in the I/O area of the SIMATIC CPU, use the module "16 Bite Digital In/Out
(0-31)". With this module the input and output data for the possible 31 slaves in an
AS-i circuit are send directly to the I/O section of the CPU.
When using A/B slaves, use the module "32 Byte Digital In/Out (0-31B)". The B-
addressed slaves are mapped in the additional 15 bytes of data.
The other modules called "Digital" can be used instead of the above mentioned
module to adapt to the actual AS-i circuit. This makes flexible adaptation to the
structure of the AS-i circuit possible.
In addition to sending the AS-i slave digital data, a communication interface mod-
ule can be added. The communication interface is used for sending specific com-
mands to the AS-i/PROFIBUS-Gateway. More details about this can be found in
chapter 7.
In order to send the analog values for AS-i slaves directly, the modules can be
used with the keyword "Analog". The value in parentheses indicates which ad-
dress range is to be used for the AS-i Analog slaves.
For modules "nn Byte Analog In (n Sl.)" and "nn Byte Analog Out (n Sl.)" the AS-i
address of the analog slave can be freely selected.
Subject to reasonable modifications due to technical advances.
Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com
Appendix: Example for startup on a Siemens S7
AS-i/PROFIBUS-Gateway
Copyright Pepperl+Fuchs, Printed in Germany
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