Communications Via Profibus Pa; Configuring The Profibus Pa Master - Siemens SITRANS Probe LU Quick Start Manual

3. Ground the instrument according to local regulations.
• For Intrinsically Safe applications, connect the cable shield to the instrument shield
1
connection
connected to an equal-potential grounding grid. For more detail on Explosion
Protection, you can download the brochure
Protection
(part number A5E00265440) from www.siemens.com/level, under
Brochures/General.
• For General Purpose applications, ground the shield at one point only (usually the
power supply side) and continue the shield from device to device, connecting it to
the shield connection in each Probe LU.
4. Tighten the gland to form a good seal.
5. Close the cover and tighten screws: please do not overtighten screws. Recommended
torque is 0.5 to 1.1 N-m (5 to 10 in-lb).
PROFIBUS PA must be terminated at both extreme ends of the cable for it to
Note:
work properly. Please refer to the
number 2.092), available from www.profibus.com.

Communications via PROFIBUS PA

Notes:
• The following instructions assume that the user is familiar with PROFIBUS PA.
• For a complete list of applicable parameters, please see the full manual.

Configuring the PROFIBUS PA master

To configure SITRANS Probe LU on the network, you will need the GSD file. You can download
the files (SIEM8124.gsd for the 6 m Probe LU, or SIEM8123.gsd for the 12 m Probe LU) from our
web site. Go to the SITRANS Probe LU product page at:
https://pia.khe.siemens.com/index.asp?Nr=11157 and click Downloads.
Startup
SITRANS Probe LU automatically starts up in RUN mode, and detects the material level. The
LCD displays the material level referenced from the Low Level Point
Input Function Block1/AIFB1). System status is displayed on the LCD, or on a remote
communications terminal.
1.
The instrument shield connection is internally connected to the external ground lug.
2.
Quick Setup
See on page 11 for an illustration.
Page EN-6 SITRANS Probe LU (PROFIBUS PA) – QUICK START MANUAL
, and ground the shield connection to an external ground that is
PROFIBUS PA User and Installation Guidelines
Siemens Process Automation Explosion
2
(the output of Analog
(order
7ML19985QV81