NEX7250 Zone 2 Annunciator
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29. Systems linked to 3
rd
Party Devices
General
Using the advanced communications facilities on the series 725 annunciator, it is possible to connect
the unit to a variety of 3
rd
party devices to monitor or control the alarm annunciator. Any 3
rd
party
device equipped with either a RS485 or a RS232 port using modbus protocol can be connected to
the P725 annunciator. Please note:- If the RS232 port of the 3
rd
party device is used a RS485/232
converter will be required. The P725 annunciator always operates as a slave device and it is
therefore only able to read and write following requests from the master device. Various parameters
of the communications are user configurable using DIL switches on the communications card. in
larger applications up to 63 separate annunciators can be connected to a single communication
network to allow remote monitoring by 3
rd
party equipment. in addition to the annunciation RTK can
also supply suitable alarm management software pre-installed onto a single computer or as part of a
complete plant wide alarm management system.
P725 Connected To 3
rd
Party Equipment
PLC
DCS/ESD
PC
P O W E R
L A M P
T E S T
A C K
R E S E T
S Y S T
T E S T
M U T E
F IR S T
R E S E T
P725