• Counting pulses and measuring frequency at the input.
• Group isolation of inputs.
• Connecting the “dry contact” and “open collector” signals.
• Supports AB and ABZ quadrature encoders.
• Recognizes 4 types of clicks.
• Programmable bounce protection for switch contacts.
• Pulse counter values are stored in non-volatile memory.
• Indication of the status of inputs, except input 8.
• Fast and simple integration into automation and monitoring systems.

Supports Fast Modbus ⚡ that allows you to instantly deliver input states and click counter values to the controller Wiren Board.

Specifications:

• 8 discrete dry contact inputs.
• Group galvanic isolation of inputs.
• Counting pulses and measuring frequency at the input.

• Supply voltage: 9…28 V DC.
• Interface: RS-485, Modbus RTU.
• Extended operating temperature range: -40…+80 °C.
• DIN rail housing: 2 modules.

The WB-MCM8 module can be used to connect two- and three-pin quadrature AB and ABZ encoders. Using encoders you can control the brightness of the backlight or control the movement of objects.

The encoder operation is configured in the web interface of the Wiren Board controller. Meaning encoder position is available in the corresponding MQTT topic. You can set the initial position and track the rotation angle.

All Wiren Board devices, in addition to the standard Modbus RTU, can work with its extension Fast Modbus ⚡, which adds new features:

• instant polling of input states and measured values via events;
• quick search for devices connected to the controller;
• resolving address collisions on the bus.

Additional features are enabled automatically - if the device supports extension, the controller driver will work with the device quickly Modbus if the device does not know anything about the extension - it will work using standard Modbus RTU.

We develop and manufacture all Wiren Board devices ourselves. All devices undergo multi-stage quality control:

• During development — checking the components used for compliance with the declared characteristics and testing the prototype device at extreme operating conditions.
• After installing SMD components — automated optical inspection.
• After soldering the lead components — visual inspection of soldering.
• After assembling the device — functional testing on an automated stand.
• When shipped to the warehouse — control of completeness, stickers, appearance.

Thanks to this approach, the failure rate is no more than 0.5% of all released devices. Read more in the article About device reliability.

If the device fails within two years from the date of purchase, we will replace it for free without the need to send it to a service center.

When used with a Wiren Board controller, you can use the mouse in the web interface:

• turn channels on and off and set the polling period
• set the operating mode of the inputs
• set the anti-bounce time.

When used with other equipment, the module can be configured via the RS-485 bus via writing values to Modbus registers. The register table is open, well documented and available online in the device documentation.

If a Wiren Board controller is used, the output states are available in the web interface controller and can be used in automation scenarios or transferred to the system top level. The device card displays only those enabled in the survey settings channels.

The module also transmits all data via Modbus RTU (RS-485), which can be read by anyone equipment or software that supports this protocol: third-party controllers, HMI panels or SCADA.