Procedure Of Data Communication - Mitsubishi Electric MELSEC iQ-R Series User Manual

15.1

Procedure of Data Communication

This section explains an overview of the procedure when performing data communication between a target device and a CPU
module using a user frame.
Parameter setting with Engineering tool
(When only default registration frame is used)
Registration using module extended parameter or
registration in flash ROM of C24
Designate user frame No. to
transmission user frame designation
area (Un\G183 to 285, 343 to 445)
of the C24 buffer memory.
Designate transmitted data (arbitrary data
portion in message to be transmitted) to
transmit area of the C24
buffer memory.
Data transmission
*1 Page 422 PARAMETER SETTING
*2 Page 250 CONTENTS AND REGISTRATION OF USER FRAMES FOR DATA COMMUNICATION
*3 Page 289 Setting of receive user frames
*4 Page 278 Receive data
*5 Page 284 Timing for start/completion of data reception
*6 Page 313 Data Transmission
Start
(When registering user frames)
(When receiving data)
Set user frame No., etc. to receive
user frame designation area
(Un\G173 to 181, 333 to 341, 8224 to 8231,
8480 to 8487) of the
C24 buffer memory
Start data communications
(Transmission) (Reception)
*6
*1,*2
Read receive data
15 DATA COMMUNICATIONS USING USER FRAMES
15.1 Procedure of Data Communication
*3
*4,*5
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