User`s manual

184
CHAPTER 4 RECEIVING DATA WITH AN
INTERRUPT PROGRAM
In data communication between the Q series C24 and the external device, an interrupt program can be used to receive
data for the following data communication functions.
• Data reception during communication using the non procedure protocol
• Data reception during communication using the bidirectional protocol
This chapter explains a case in which data reception using the following data communication functions is performed
with an interrupt program.
Receiving data with an interrupt program expedites data reception by the programmable controller CPU.
BUFRCVS
SM400
FEND
I
Main program
Interrupt program
execution
Main program
Receive
Q series C24
Interrupt-issued
Data transmission
Programmable
controller CPU
External device