Wire the channels of an I/O device

Wire variables to channels of an I/O device in the channel variables list. In this list, the displayed variable names are their direct representations.I/O channels represent hardware input or output points. An I/O variable is connected to a channel for use in program organization units (POUs). When debugging, lock, unlock, and force the values of I/O variables.
Use direct variable representation (%IX1.1) to access I/O values when I/O channels have no wiring.
TIP: In the Dictionary, a directly represented variable with the same name represents an unwired channel. Wiring the channel removes its Dictionary instance.
To wire the channels of an I/O device
  1. From the
    Application View
    , right-click the device, and then click
    I/O Wiring
    .
  2. From the rack list, click the I/O device.
    TIP: For complex equipment, expand the equipment to access the simple devices, and then click
    Devices
    .
  3. In the
    Channel Variables
     list, double-click the channel to wire.
  4. From the
    Variable Selector
    , select the variable, and then click
    OK
    .
    The
    Name
    column indicates the wired variable’s direct representation. For Boolean channels, the default value operations are direct and no conversion.
  5. (optional) To set conversion tables for analog I/O channels, select the wired channel in the list, then choose the conversion table from the
    Conversion Function
    drop-down list.
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