Key process connection
Keyboard layout ► Key process connection
When actuating a key, this can be transmitted to the PLC and evaluated.
For this, a process connection needs to be programmed for the key.
When the key is now pressed, the corresponding bit in the PLC will be set.
If the key is also equipped with an LED, the PLC can also trigger this LED.
For this, it is also necessary to define a process connection for the LED.
The LED can now be switched on and off by setting or resetting the bit.
The process connections are defined in the "Station parameters" in the "keyboard field" register or"LED-bit field"dialogue.
the "Station parameters" dialogue will pop up by double-clicking on the Station in the project explorer