Mitsubishi Electric melsec q03ud(E)cpu - Page 318

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CHAPTER7 COMMUNICATIONS WITH INTELLIGENT FUNCTION MODULE
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7.1 Communications between CPU Module and Intelligent Function Module 7.1.4 Communications using the intelligent function module device
The intelligent function module device accesses the intelligent function module every time when an instruction is executed.
When writing or reading buffer memory data using multiple intelligent function module devices in a sequence program, write
or read the data with the FROM or TO instruction in one location of the program.
Figure 7.6 Writing using multiple intelligent function module devices
Figure 7.7 Writing using the TO instruction
Stores data in the
data register.
Writes data once
at this point.