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WB-MRM2-mini Modbus Relay Modules/en: различия между версиями
WB-MRM2-mini Modbus Relay Modules/en (просмотреть исходный код)
Версия 18:06, 17 июля 2019
, 4 года назадНовая страница: «The module must be installed in such a way as to meet the requirements of electrical safety and to prevent accidental contact of contacts under high voltage. The…»
(Новая страница: «If the device is the last one on the RS-485 line, a 120 Ohm resistor-terminator must be installed between its inputs A and B. Practice shows that in the case of b…») |
(Новая страница: «The module must be installed in such a way as to meet the requirements of electrical safety and to prevent accidental contact of contacts under high voltage. The…») |
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| Строка 167: | Строка 167: | ||
If the device is the last one on the RS-485 line, a 120 Ohm resistor-terminator must be installed between its inputs A and B. Practice shows that in the case of bench tests with a small length of the RS-485 line and a small number of terminator devices on the last device in the line can not be installed. | If the device is the last one on the RS-485 line, a 120 Ohm resistor-terminator must be installed between its inputs A and B. Practice shows that in the case of bench tests with a small length of the RS-485 line and a small number of terminator devices on the last device in the line can not be installed. | ||
The module must be installed in such a way as to meet the requirements of electrical safety and to prevent accidental contact of contacts under high voltage. The module must be operated under recommended environmental conditions. | |||
[[Файл:Installation_WB5%2BWB-MRMR2-mini.png|550px|thumb|center|Образец монтажа и подключения модуля. Питание модуля осуществляется от самого контроллера ("-" — GND; "+" — Vout)]] | [[Файл:Installation_WB5%2BWB-MRMR2-mini.png|550px|thumb|center|Образец монтажа и подключения модуля. Питание модуля осуществляется от самого контроллера ("-" — GND; "+" — Vout)]] | ||