Channels

Channels are the media through which information about inputs/outputs of the MW (or broker) equipment are sent or received.
These channels can be linked to physical entry points of the equipment like MODBUS queries according to their compatibility with the channel.
The GRD/cLAN have 4 types of channels::

• Digital inputs channels
• Digital outputs channels
• Analog inputs channels
• Pulse inputs channels

The most common option is to link them in the following manner:

Where:

Ix: is a digital input channel.
DIx: is a physical digital input.
Ox: is a digital output channel.
DOx: is a physical digital output.
ANx: is an analog input channel. 
AIx: is a physical analog input.
PIx: is a pulse input channel

Beyond the most common way to link the channels like the previous example, it can be done in a disordered manner or repeating them. This means that you could create a channel I5 linked with the DI13 input and a channel I6 that is also linked to the DI13 input.

On GRD/cLAN with serial port, I/O channels can be linked to Modbus queries if you use the embedded Modbus master feature. If you do it, the queries will be shown on the "source" combo box (MB-DIx, MB-DOx, MB-AIx or MB-PIx)

On GRD/cLAN with script programming support you can link script variables to any channel. The channel will take variable value to send reports and when creating historical records. You can also change the variable channel remotely if you link it with a digital output channel.

Adding Channels

To add channels in the “Configurator” you must enter the menu “Channels -> Type of desired channel”.

After selecting the desired channel and among any of the 4 you’ll have the option to add or remove, it is important to point out that within each channel only inputs and outputs compatible with that channel will appear.

You will now see an example of how to add a digital input channel.

To erase a channel you only have to click on the “Del” button of the channel previously selected.

2022-03-17