====== Communication channel settings ======

Every PLC may have one or more communication channels. The number and types of channels depend on the platform type of a particular PLC. For example, a mark100 only has a single serial communication channel. First, a channel is created, and the in the Channel properties the channel type and communication properties are defined. The channel definition menu depends on the PLC type (see [[:en:mervis-ide:35-help:015-plc:005-attach_plc|PLC type setting]]). If a required channel type can not be selected, most probably a wrong platform type had been assigned. In a following example, a serial channel will be created with Modbus RTU communication protocol.

Right-click the PLC and select „Add channel".

{{:en:mervis-ide:35-help:add_channel.png}}

Set the name and communication parameters of the channel, and enter the items by clicking the Down arrow (Confirm) button.

{{:en:mervis-ide:35-help:add_channel2.png}}

Parity space and mark is not implemented in RT PLC. After the compiled solution, the results show "Warning" about using this parity in the solution.