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Appendix VII: Profibus PA
Note:
The following instructions assume that the user is familiar with Profibus PA.
Profibus PA Communications for the SITRANS LR 300
Profibus PA is an open industrial protocol. Full details about Profibus PA can be obtained
from Profibus International at www.profibus.com
The SITRANS LR 300 is a Class A, Profile Version 3.0, PA device. It supports Class 1
Master for cyclic data exchange, and Class 2 for acyclic services: (see page 115 for
details).
The SITRANS LR 300 can be configured using a software package. There are a number of
different software packages available and the SITRANS LR 300 should work well with any
one of them. We recommend Simatic Process Device Manager (PDM) by Siemens. (You can
find more information at www.fielddevices.com: go to Product Solutions > Products and
Systems > Software).
Device Descriptor
In order to use Process Device Manager (PDM) with Profibus PA, you will need the
Device Descriptor for the SITRANS LR 300, which will be included with new versions of
PDM. You can locate the Device Descriptor in Device Catalog, under Sensors/Level/
Echo/Siemens Milltronics. Earlier versions of PDM may have only IQ Radar 300 listed:
in this case, use the IQ Radar 300 Device Descriptor. If you do not see either
SITRANS LR 300 or IQ Radar 300 under Siemens Milltronics, contact your Siemens
Milltronics representative for assistance.
The GSD file
The GSD file SM_05E0.GSD can be obtained from Siemens Milltronics at our Web site:
www.siemens-milltronics.com. (See page 118, To configure and use Profibus PA with an
S7-300/ 400 PLC, for more details.)
Bus address (Device Address)
Values
•
This value can be set via P752, or over the network. (After changing the value, turn
the unit off and back on again in order for the change to take effect.)
Page 114
Range: 0 to 126
Pre-set: 126
SITRANS LR 300 – INSTRUCTION MANUAL
7ML19985CL02
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