7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL Page 135
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G: Communications PA
Operating as a Profile Device
Every manufactured PROFIBUS product has a unique PROFIBUS identification number
which identifies it to the system. PROFIBUS Profile Standard version 3.01 also defines a
Profile Model which can identify a product as a generic profile device on the network.
SITRANS LR250 can be identified in one of three ways:
Defining the device as Profile-specific as opposed to Manufacturer-specific makes it
possible to exchange the device for any other device of the same profile type without
changing the GSD file.
To set up SITRANS LR250 as a profile device see PROFIBUS Ident Number (4.4.) on
page 90.
Configuring a device
See
Configuring a new device
on page 35.
Configuring PROFIBUS PA with an S7-300/ 400 PLC
1. If SITRANS LR250 is not listed in the STEP 7 device catalog, you can download the
DeviceInstall file from the Siemens Web site and run it from your computer. Go to
www.siemens.com/lr250
and click Downloads.
2. Add the SITRANS LR250 "rack": click and drag the SITRANS LR250 folder from the
hardware catalog.
3. Fill the rack with desired modules, by dragging and dropping them from the
hardware catalog.
4. After configuring PROFIBUS PA in steps 2 and 3, download it to the PLC.
5. Add code to the PLC program to read data consistently using the SFC14.
Device Identification Profile Model
STD PROFILE
Standard Profile (uses generic GSD for 2 AIFB [ident # =
0x9701]
* MANUFACTURER
Manufacturer-specific (uses Siemens EDD and GSD file,
which identifies the LR250 [PROFIBUS PA]) [ident # = 0x8150]
STD – AIFB 1 ONLY
Standard Profile AIFB 1 only (uses generic GSD for 1 AIFB)
[ident # = 0x9700]
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