Badger Meter SRD/SRI Valve Positioners - Manual (Page 13)

Bus Connection
The SRD 991 PROFIBUS-PA version is bus compatible, which means that to a 2-core lead the instruments have to be attached
in parallel according to IEC 1158-2 The lead serves as voltage feeder as well as for digital communication To activate each
instrument individually, an individual address has to be entered
From the factory the address 126 is always stored
1) ; Since this address cannot be used during operation, a new address has to
be entered in every instrument This can be done via the local keys, with the FDT/DTM software or a commercial configurator
To a PROFIBUS-PA-segment with a length of up to 1900 meters, up to 32 instruments can be attached A maximum of up to
126 instruments can be addressed with PROFIBUS
System Integration
During operation the SRD991 will communicate with a PROFIBUS master class 1 The required GSD-file (“instrument-specific
dates”) can be downloaded from the Internet by path
http://www foxboro-eckardt com/products/srd991_en html
More informations about PROFIBUS see www.profibus.com
1) as per profile 3.0
Summary – Profibus-PA
Page 13 August 2014 POS-UM-00010-EN-03