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WB-MR6F Modbus Relay Module/en: различия между версиями
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 current flowing when the button or switch is closed is small, so the type of button or switch can be any. Despite the built-in protection against rattle, choo…») |
(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…») |
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The current flowing when the button or switch is closed is small, so the type of button or switch can be any. Despite the built-in protection against rattle, choose quality buttons and switches to avoid false alarms due to bad contacts. | The current flowing when the button or switch is closed is small, so the type of button or switch can be any. Despite the built-in protection against rattle, choose quality buttons and switches to avoid false alarms due to bad contacts. | ||
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. | |||
Модуль необходимо устанавливать таким образом, чтобы удовлетворять требованиям электробезопасности и не допускать случайного касания контактов, находящихся под высоким напряжением. Модуль должен эксплуатироваться при рекомендованных условиях окружающей среды. | Модуль необходимо устанавливать таким образом, чтобы удовлетворять требованиям электробезопасности и не допускать случайного касания контактов, находящихся под высоким напряжением. Модуль должен эксплуатироваться при рекомендованных условиях окружающей среды. | ||