User`s manual

252
CHAPTER 11 DATA COMMUNICATIONS USING
USER FRAMES
Registering the fixed format portion of the message transmitted/received by the opposite device and the Q series C24
as a user frame beforehand allows data transmission/reception using a user frame.
The use of the user frame to perform data transmission/reception facilitates the creation of transmission data on the
programmable controller CPU side and a simplified sequence program for checking the reception data.
This Chapter explains the data transmission/reception method and procedure when performing data communication
with the Q series C24 non procedure protocol using a user frame.
For more details on the "Transparent code" and "ASCII-BIN conversion" used in the explanations of this chapter, see the
chapters listed below.
When using transparent codes or performing data communication using ASCII-BIN conversion, please read the following
chapters, as well.
• When using transparent codes:  Page 296, CHAPTER 12
• When performing data communication using ASCII-BIN conversion:  Page 319, CHAPTER 13
Opposite device such as a bar code reader
or ID controller personal computer
Arbitrary data
Data
transmission
Arbitrary data
User frame
Q series C24
Data
transmission
User frame