Configuration; The Gsd File; Setting The Profibus Address; Bus Termination - Siemens Sitrans PROBE LU 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 (SIEM8124.gsd for the 6 m Probe LU; or SIEM8123.gsd for the 12 m Probe LU)
is available from the product page of our web site at:
https://pia.khe.siemens.com/index.asp?Nr=11157 under Downloads.

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 handheld programmer
locally (see
remotely via the bus, using a parameterization tool such as SIMATIC PDM (see
Address (default 126)
Values

Bus Termination

In order for PROFIBUS PA to work properly, it must be terminated at both
Note:
extreme ends of the cable. 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 and allow a current reserve for
safety.
In the case of the Probe LU (PROFIBUS PA), the maximum PROFIBUS current is user-
selectable, and can be either 12, 13, 15, or 20 mA. (See
page 79.)
7ML19985JB02 SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL
on page 73).
Range: 0 to 126
Pre-set: 126
on page 19) or
PROFIBUS Current Consumption
Device
on
Page 23