WB-MRM2-mini Modbus Relay Modules/en: различия между версиями

[[File:MINI.png| thumb | 200px|Dual Channel Relay Mini-module WB-MRM2-mini v.2]]

[[File:MiniRelay-2.JPG| thumb | 200px|Dual Channel Relay Mini-module WB-MRM2-mini v.1]]

 

Two-channel relay module WB-MRM2-mini v.2 is designed for use in building automation systems. The WB-MRM2-mini v.1 featured all-in-one terminal blocks and a lower height (46 mm). The module is mnaged from the controller [[Wiren Board 6/en|Wiren Board 6]] or a computer via the bus [[RS-485/en| RS-485]] via [[Relay Module Modbus Management/en |Modbus Protocol]], as well as via external buttons connected to the module. Miniature dimensions of the module allow you to mount it next to the load in the cable channels, bowls lamps, deep installation boxes for sockets and switches.

The inputs have several modes of operation: trigger mode (for control with buttons) and repeat mode (for control with switches). In the trigger mode, to change the state of the relay, it is enough to close and open the input once. The change of state occurs on the rising edge (that is, when the circuit). In the repeat mode, the relay state is determined by the input state: the input is closed — the relay is on, open — the relay is off. Details about the mode switching  are written in [[ Relay Module Modbus Management/en|Relay_Module_Modbus_Management]].

|52 x 24 x 20.5 mm

[[File:Wb-mrm2-mini-scetch.png|400px|thumb|left

The new device is added to the web interface in the section of the corresponding RS-485 port. In the web-interface on the right panel select Configs -> Serial Device Driver Configuration. In the /dev/ttyAPP1 port settings, add a new device (WB-MRM2 or WB-MRMR2-old, see below) by clicking on the '+ Serial device' button in the List of Devices section. Then specify the address of the device and select its type. Details about the device configuration in the web interface Wiren Board see [[https://wirenboard.com/wiki/index.php/RS-485:Configuration_via_Web_Interface/en|  article]].

An example of controlling a WB-MRM2-mini relay module with a Wiren Board 6 controller and programming control scenarios will be discussed in a simple layout, where the relay module is the only device connected to the controller (see the diagram in [[#Mounting|Mounting]]). Normally open button without fixation is connected to input 1 and GND. 12 V power is supplied to the V+(+) and GND (- ) inputs. The RS-485 A and B inputs/outputs of the first controller port and the WB-MRM2-mini module are connected.  

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 | Firmware Changelog]].

== Known faults and bugs ==

[[WB-MR:_Errata/en |List of known faults]]

== Images and drawings of the device ==