Configuring A Device; Configuring Profibus Pa With An S7-300/ 400 Plc; Cyclic Versus Acyclic Data - Siemens sitrans LR200 Instruction Manual
2-wire, 6 ghz pulse radar level transmitter
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Also See for sitrans LR200:
- Quick start manual (276 pages) ,
- Instruction manual (194 pages) ,
- Compact operating instructions (45 pages)
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SITRANS LR200 can be identified in one of three ways:
Device Identification
STD PROFILE
*
MANUFACTURER
STD – AIFB 1 ONLY
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 LR200 as a profile device see PROFIBUS Ident Number (4.4.) on
page 82.
Configuring a device
Device Description (DD)
See
Configuring PROFIBUS PA with an S7-300/ 400 PLC
1.
If SITRANS LR200 is not listed in the STEP 7 device catalog, you can download the
DeviceInstall file from the Siemens Milltronics Web site and run it from your
computer. Go to https://pia.khe.siemens.com/index.asp?Nr=7427 and click
Downloads.
2.
Add the SITRANS LR200 "rack": click and drag the SITRANS LR200 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.
Cyclic versus Acyclic Data
When you request data from a device via PROFIBUS PA, you have two choices. Cyclic
data is provided at every bus scan: acyclic data is requested and provided as needed.
Input information is always requested at every bus scan and is set up as cyclic data.
Configuration information is only needed periodically and is set up as acyclic data.
Page 130
SITRANS LR200 (PROFIBUS PA) – INSTRUCTION MANUAL
Profile Model
Standard Profile (uses generic GSD for 2 AIFB [ident # =
0x9701]
Manufacturer-specific (uses Siemens DD and GSD file, which
identifies the LR200 [PROFIBUS PA]) [ident # = 0x8150]
Standard Profile AIFB 1 only (uses generic GSD for 1 AIFB)
[ident # = 0x9700]
on page 29.
7ML19985JR01
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Troubleshooting
