Teracom TCW210-H, Руководство пользователя

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TCW210-TH-R1.2 - January 2018 Page 4
It is strongly recommended to use only UTP/FTP cables and keep total cable length up to 30m.
Although functionality has been achieved in the longer distance, we cannot guarantee error-
free operation over mentioned wiring length. We recommend reading Maxim’s 1-Wire tips at
http://www.maxim-ic.com/app-notes/index.mvp/id/148.
We guarantee proper operation only with Teracom 1-Wire sensors.
6.2.3. RS-485 interface
RS-485 is a standard for serial communications systems defined by Telecommunications
Industry Association (TIA) and Electronic Industries Alliance (EIA). Implementing the standard,
communication systems can be used effectively over long distances and in electrically noisy
(industrial) environments.
The maximum number of sensors (1-Wire or RS-485) connected to TCW210-TH is 8.
The device supports temperature and humidity-temperature sensors.
MODBUS RTU protocol specifies that address of the device should be between 1 and 247. The
user should take care of appropriate address settings.
For multi-sensors systems “daisy-chained” (linear topology) should be used:
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.
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