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FuzzyBot (обсуждение | вклад) (Часть переводимой страницы WB-MRWL3 Modbus Relay Module.) |
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The flowing current is small when the button or switch is closed, so the button or switch can be any type. Despite the built-in protection against rattle, choose quality buttons and switches to avoid false alarms due to bad contacts. | The flowing current is small when the button or switch is closed, so the button or switch can be any type. 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 be installed without terminator. | |||
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. | |||
<!--[[File:Installation_WB3_+_WB5_+_DIN.png|850px|thumb|center|Образец монтажа и подключения модуля WB-MR3HV/I. Выбор качественного блока питания очень важен для работы модуля. Кнопка с проводами желтого цвета, подключенная ко входу "4" модуля, отключает все три канала одновременно.]]--> | <!--[[File:Installation_WB3_+_WB5_+_DIN.png|850px|thumb|center|Образец монтажа и подключения модуля WB-MR3HV/I. Выбор качественного блока питания очень важен для работы модуля. Кнопка с проводами желтого цвета, подключенная ко входу "4" модуля, отключает все три канала одновременно.]]--> | ||
== | == Relay operation in case of power failure == | ||
Depending on the value written to the storage register 0x06, after the power is turned off and restored, the relays will remain off (if the value is 0, or turn on those that were turned on before the power interruption if the register has a value of 1). | |||
== | ==Modbus Control== | ||
Details of the work with the module via Modbus Protocol is written in [[Relay Module Modbus Management/en| Relay Modules Modbus Management ]]. | |||
There you can also find a map of the device registers. | |||
[[Периферийные устройства с интерфейсом RS-485 серии WB-xxxx | | [[Периферийные устройства с интерфейсом RS-485 серии WB-xxxx/en |Back to peripheral devices list]] | ||
== | == Device firmware update == | ||
Starting with the new firmware versions of the device, the firmware update functionality (firmware) via the Modbus Protocol is supported. This makes it possible to extend the functionality of the devices and eliminate errors in the firmware directly at the installation site. Read more about flashing devices described in the article [[WB-MCU-Flasher|Download firmware to Wiren Board devices]]. A list of firmware versions that support the update, as well as devices for which this feature is implemented, can be found in [[Firmware_Changelog/en| Firmware Changelog]]. | |||
== | == Known faults and bugs == | ||
[[WB-MR:_Errata | | [[WB-MR:_Errata/en |List of known faults]] | ||
== | == Images and drawings of the device == | ||
{{Wbincludes:WBPictures|1}} | {{Wbincludes:WBPictures|1}} |