Configuration; The Gsd File; Setting The Profibus Address; Bus Termination - Siemens SITRANS LR200 Instruction Manual

Configuration

To configure a PROFIBUS PA Class 1 Master (for example, a PLC), you will need a GSD
file.

The GSD file

The GSD file SIEM810F.gsd is available from the SITRANS LR 200 product page on our
web site. Go to https://pia.khe.siemens.com/index.asp?Nr=7427 and click Downloads.
Download the DeviceInstall, and run it from your computer. This will install the GSD file
into your system (as long as you are using SIMATIC software).
Note: If you are not using SIMATIC software, you can download the GSD file separately,
and import it with the software you are using.

Setting the PROFIBUS address

When your instrument is shipped, the PROFIBUS address is set to 126. You can set it
Setting the PROFIBUS address via the hand programmer
locally (see
remotely via the bus, using a parameterization tool such as SIMATIC PDM (see
(default 126)
on page 85).
PROFIBUS address
Values

Bus Termination

Note:
PROFIBUS PA MUST be terminated at both extreme ends of the cable for it to
work properly. Please refer to the PROFIBUS PA User and Installation Guidelines (order
number 2.092), available from www.profibus.com.

Power Demands

To determine how many devices can be connected to a bus line, calculate the combined
maximum current consumption of all the connected devices: 10.5 mA for SITRANS LR 200.
Allow a current reserve for safety.

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.
7ML19985HP01 SITRANS LR 200 (PROFIBUS PA) – INSTRUCTION MANUAL
Range: 0 to 126
Pre-set: 126
on page 21) or
Address
Page 25