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14
PRÉSENTATION
INTRODUCTION - DARSTELLUNG - PRESENTAZIONE - PRESENTATIE - PRESENTACIÓN - APRESENTAÇÃO
JBUS/MODBUS COMMUNICATION
EN
JBUS/MODBUS MEDIA
)N A STANDARD CONlGURATION ONE 23
CONNECTION ENABLES 5,
TO BE CONNECTED TO A 0#
OR 0,# OVER METRES USING THE *"53-/$"53š
PROTOCOL
5, #OUNTIS %
Recommendations:
An LIYCY type shielded twisted pair must be used. In
an environment with interference or on a long network
with a large number of COUNTIS, we recommend
using a shielded twisted pair with general LIYCY-CY
shielding.
If the distance is greater than 1200 m and /or there
are more than 64 COUNTIS, a repeater (1 channel) or
a spark arrester (2 channels) must be connected to
enable the connection of additional COUNTIS with
communication interface over more than 1200 m.
For more information on the connection procedure,
refer to the technical bulletin available on the web
site: www.socomec.com
COUNTIS E43 - Réf. 537 885 B
Important:
It is essential to connect a resistance of 120 Ohms
to the 2 ends of the connection; this can be found in
the product packaging. Other solutions are available
QSHIQ FVI STXMG IXG
TPIEWI EWO JSV HIXEMPW
JBUS/MODBUS protocol
4HE *"53-/$"53 PROTOCOL OPERATES ON A MASTERSLAVE
STRUCTURE
s 2EADING &UNCTION
s 7RITING &UNCTION OR BROADCAST OPTION AT ADDRESS
4HE COMMUNICATION METHOD IS 245 2EMOTE 4ERMINAL
5NIT WITH HEXADECIMAL CHARACTERS COMPRISING A
MINIMUM OF BITS
JBUS/MODBUS table
&ILE 2EF
#AN BE DOWNLOADED FROM THE WEB SITE WWWSOCOMEC
com
5 Ÿ
5 Ÿ
5 Ÿ
R=120Ω
RS485 COUNTIS
5 Ÿ
5 Ÿ
5 Ÿ
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