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User`s manual

ManualsBrandsMitsubishi ManualsComputer equipmentQJ71C24/-R2
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CHAPTER 9 CONTENTS AND REGISTRATION OF THE USER FRAMES FOR DATA COMMUNICATION
9
9.1 User Frame Types and Contents During Communication
9.1.1 User frames to be registered and used by the user
The following explains the registered data, data contents that are transmitted and received, and how the Q series C24
handles user frames registered the Q series C24 Flash ROM or buffer memory by the user.
(1) General description
User frames registered by the user are frames that contain arbitrary data that matches the specifications of the
external device. The data contents are selected by the user.
(2) User frame registering
(a) Up to 231 user frames can be registered, read, and deleted at the Q series C24.
• Q series C24 flash ROM
(number that can be registered: Maximum 200, frame No.: 3E8H to 4AFH)
• Q series C24 buffer memory
(number that can be registered: Maximum 31, frame No.: 8001H to 801FH)
(b) Up to 80 bytes (80 en characters) of data can be registered as 1 user frame.
(c) User frames can include data for handling the variable data (sum check code, Q
series C24 station No., etc.) shown in (4) as a part of user frames.
(d) User frames can be overwritten to the Q series C24 buffer memory. (The old
contents are destroyed.)
(e) The registration destination for the user frame can be divided into the following
usage.
• After data communication has started, register the user frames without changes to buffer memory and use.
(Frame No: 3E8H to 4AFH)
• After data communication has started, register the user frames with changes to buffer memory and use.
(Frame No: 8001H to 801FH)
(3) Data that can be registered as user frame
Up to 80 bytes of data can be registered by combining 1 byte of register code 01H to FEH data and 2 bytes of
register code FFH + 00H to FFH + FFH data.
(a) One byte of register code (01H to FEH) data
This is the register code for transmitting and receiving the register code (01H to FEH) data.
(b) Two bytes of register code (FFH + 00H) to (FFH + FFH) data
This is the register code for transmitting and receiving the variable data (Sum check code, Q series C24 station
No., etc.) shown in (4) as part of the user frame.
FFH is the register code of the first byte for handling variable data.