The circuit design of the repeater meets coal mine safety production technology standards and requirements, and the repeater can be used for coal mine underground RS-485 communication.吴淼刘希高刘志民吕一鸣周游张金涛罗婉婉李旭郝建生马昭
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RS485HUB$149.00 ea. (Circuit board only) Enclosure-M$10.00ea. (Optional Plastic Box) DB9F-7$7.50ea. (Optional RS232 Cable) 12VDC-SPS$8.50ea. (Optional Power Supply, 2.1mm) RS485HUB-B9FSPS$175.00ea. (Unit with all Options) Need a different configuration or more information? Give Ron a...
tails.Thecircuitdiagramandprogramflowchartareprovided. Therepeaterhas thecharactersofhi【 ghreliability ,highspeed andsimplicity. Keywords:RS-485;Repeater;DS80C520 1引言 RS--485是一种平衡传送的串行接口标准,比最早的采用非 平衡方式传送的RS一232串行接口标准在电气指标上有了大幅 ...
If the common mode potential is large, the ground loop current will also be large. And if the ground loop current is large, something is going to turn into a fuse. If it isn’t the wire, it will be a trace on a circuit board somewhere. (Circuit boards usually blow faster than wire...
Top Description The I-7513 is a 3-ch RS-485 Active Star Wiring Hub. The unit has three independent RS-485 output channels, each with their own driver, which can transmit signals across 4,000 ft (1200 m) of cable on each channel. The I-7513 includes both Hub and Repeater functions, ...
Leakage current from those high impedance drivers (as much as 10µA) can cause the RS-485 circuits control lines to drift high or low. In addition, parasitic capacitance on the circuit board can couple the control lines to either GND or VCC. These factors cause the control lines to drift...
If in this network a short circuit occurs (connect the A+B wire)in a network section located at the secundairy side of a repeater, the complete network is out of order. I had expected that only the single network segment would be out of order and not the complete network.This type of...
(°C) 100 125 1321 G19 EIA562 Driver Output Voltage vs Supply Voltage 10 18 EIA562 Driver Output Short-Circuit Current vs Temperature VOUT = 0V 16 14 12 10 SINK 8 6 –50 –25 SOURCE OUTPUT HIGH OUTPUT LOW –8 –10 4 5 7 8 9 6 VDD SUPPLY VOLTAGE (V) 10 1321 G08 50 25 ...
RS422 Change in Magnitude of Driver Common-Mode Output Voltage Maximum Driver Short-Circuit Current PROFIBUS LOAD (Figure 1) RCABLE = 0Ω, VCC = 4.5V to 5.5V RCABLE = 5.5Ω, VCC = 4.5V to 5.5V RCABLE = 11Ω, VCC = 4.75V to 5.5V All of the Conditions Above All of the Conditio...