TCG140_R1.1 – May 2018
Page 7
Interconnections are realized by UTP/FTP cables with RJ-45 connectors. The popular Ethernet
wiring standard ANSI/TIA/EIA T568B is used:
It is recommended to use standard patch cables for LAN
networks.
Special attention should be paid on termination of the bus in
the last sensor.
We recommend keeping total cable length up to 30 m,
although the RS-485 interface works over much longer
distance.
Attention!
Special attention should be paid on termination of the bus.
The last sensor in the chain should have a terminator
installed on the free RJ-45 socket.
5.2.4.
Digital inputs connection
Attention! Digital inputs are NOT galvanic isolated.
The TCG140 digital inputs can be used as “dry contact” only.
The term “dry contact” means that to this input can be connected devices with an open drain or
relay outputs - door contact switch, push button, PIR detector etc.
The following picture illustrates how an alarm button can be connected to a digital input of
TCG140. One side of the contact is connected to “Digital In” while the other side is connected to
“GND” terminal.
Pin# RJ45
1
Orange/White Tracer
2
Orange
3
Green/White Tracer
4
Blue
5
Blue/White Tracer
6
Green
7
Brown/White Tracer
8
Brown
Содержание TCG140
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