# SIO

## Host to Display Data Transfer

- (1) and (3) (Command Data area) store the data to be transmitted from the host device to the Display.

- After the Display analyzes the Command Data, (2) and (4) (Response Data area) store the result of "ACK" or "NAK", or no response.

- Please send the Command Data (3) from the host device after receiving the Response Data (2) from the Display.

NOTE

- When detect the break of the communication cable and the Display power cuts, setting to the environment which is used, please set the response timeout time of host side. 3 seconds in response timeout time of host side are recommended.

## Display to Host Data Transfer

- When entered with the touch panel, the Display sends the data stored in the interrupt data area to the host device. (Interrupt Output)

- When interrupt output is written by a Word Switch (16 bit), the contents of the lower 8 bits are output as an interrupt code.

- The timing of the interrupt output is set with the Word Switch Trigger Action.

- Interrupt output does not occur in case of 1:n or RS422/485 (2wire) connection. Please refer to the interrupt output request.
  Interrupt Output Requests