User`s manual

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CHAPTER 9 CONTENTS AND REGISTRATION OF
THE USER FRAMES FOR DATA
COMMUNICATION
User frames are used to register some, or all, of the messages exchanged between an external device and the Q
series C24 in advance and use them to check the send data or receive data.
The following functions can use Q series C24 user frames to transmit and receive data.
• MC protocol on-demand function. ( Page 243, CHAPTER 10)
• Non procedure protocol data transmit and receive functions. ( Page 252, CHAPTER 11)
Data can be transmitted and received by registering the corresponding user frames to the Q series C24 in advance to
match the data contents that are transmitted and received between the external device and the Q series C24.
This chapter explains the data that can be registered, the data contents that are transmitted and received, and
registering to the Q series C24 of user frames that can be used in data communications with the external device.
See Page 243, CHAPTER 10 and Page 252, CHAPTER 11 for a description of how each data communications
function uses the user frames.
9.1 User Frame Types and Contents During Communication
This section explains the kinds of user frames handled by the Q series C24 and the data contents that are transmitted
and received.
The following two kinds of user frames are available. Either kind can be used.
*1 Frame described in  Page 221, Section 9.1.1
*2 Frame described in  Page 230, Section 9.1.2
User frame
*1
User frame
(Generic term)
Default registration frame
*2