Gree TDmetal Modbus Gateway 설치 매뉴얼 - 페이지 6
{카테고리_이름} Gree TDmetal Modbus Gateway에 대한 설치 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Gree TDmetal Modbus Gateway 12 페이지. For u-match r32 units
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RS485 cable requirements
2 RS485 cable requirements
The communication is running on RS485 line and must be connected by cables specially
designed for this. These cables should conform demands by EIA-485 speci cation. (E.g.
see BELDEN 3016A)
It requires shielded twisted 2-pair cable or 1.5-pair cable. Recommended thickness
of cable lines is 0,2 - 0,32 mm (24 - 22 AWG,
One twisted pair is used for connection of A and B. Remaining line(s) are used for
GND connection.
Shielding of the cable must be attached on the chassis of one of the devices. Best
practice is to attach it on the outmost indoor unit chassis.
6 Modbus Gateway
0.5 - 0.65 mm)