DAQ IoG 사용자 설명서 - 페이지 11

{카테고리_이름} DAQ IoG에 대한 사용자 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. DAQ IoG 18 페이지. Gateway comm module

Callisto IoG

D A Q E L E C T R O N I C S

Section 3--Internal Link and DIP Switch Setup

In order to access the links LK1, LK2, LK3, LK4, and the DIP switch SW2; it is first

necessary to remove the top cover from the IoG case. Merely turn the thumbscrew at the

back of the case counter-clockwise until it disengages from the case, and then slide the

top cover rearwards until it is free from the case. The thumbscrew is held captive in the

top cover, so there is no danger of losing it.

This link is provided with a shorting jumper installed as shipped from the factory. The

shorting jumper should not be removed. This link is provided for purposes of program

debugging, and is intended for use by qualified personnel only.

3.3 Port 1 – Port 4 RS-485 Line Biasing/Termination Link (LK2)

The LK2 link is utilized when one or more communication ports have been set up for RS-

485. This link group provides 5 VDC and 0 Volts line biasing for better electrical noise

immunity, and also properly terminates the communication line by placing a 120 ohm

resistance in parallel with the high and low signal lines.

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