I'm performing a project in which I'm using a PLC from "altus" the brazilian Co., an Exter T100 touch panel from "Beijer" and an Atmel microcontroller.
As I could not send the instructions directly from the touch panel to the microcontroller I'm using the PLC as an intermediatte stage between them. Then I'm going to send the data and the instructions sent from the touch panel to the PLC to the microcontroller via serial port.
The problem is that these data is concerned with different process parts. How can the microcontroller know that the received data is for a specific part of the process?
As I could not send the instructions directly from the touch panel to the microcontroller I'm using the PLC as an intermediatte stage between them. Then I'm going to send the data and the instructions sent from the touch panel to the PLC to the microcontroller via serial port.
The problem is that these data is concerned with different process parts. How can the microcontroller know that the received data is for a specific part of the process?
