Fluid Components International ST98 Profibus C101-U Module - Manual (Page 4)

DOCUMENT NUMBER
06EN003344
SUBJECT
Users Guide – ST98 Profibus
CAGE CODE
64818
DATE
03/27/03
SECTION PAGE
1 of 3
REVISION
A
NOTICE OF PROPRIETARY RIGHTS: THIS DOCUMENT CONTAINS CONFIDENTIAL TECHNICAL DATA, INCLUDING TRADE SECRETS AND
PROPRIETARY INFORMATION WHICH ARE THE PROPERTY OF FLUID COMPONENTS INTL (FCI)
1.0 SCOPE
This document is a supplement to instructions that use the ISM 101-C Profibus-DP communication
module. It provides information on the instruction set used by the module. The ISM 101-C module
converts the current output of an FCI instrument into a Profibus –DP signal.
2.0 APPLICABLILITY
The instructions and information found in this document are applicable to the ST98 with the ISM 101-
C Profibus module.
3.0 INSTALLATION
3.1 PROFIBUS CONNECTIONS
The ST98 PROFIBUS data transfer is based on the RS485 Standard and EN50170. When
planning the Installation it is recommended that the physical regulation for PROFIBUS equipment
as described in EN50170 be followed.
See Figure below for recommended connection to PROFIBUS network.
A Line
B line
PROFIBUS CABLE
The ST98 with the E.BLOXX PROFIBUS module has no integrated terminating resistors . An
external termination resistor network needs to be added at the end of segment is the ST98 is the
last instrument in the segment.