Mitsubishi MELSEC-A series User Manual

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3. SPECIFICATIONS /MELSEC-A
3.5 Buffer Memory
The AD71 has a battery backed buffer memory for communication
of data with the PC CPU. The memory map is shown in Fig. 3.22.
Data can be read from the buffer memory as follows:
0 Reading data using the sequence program
One word (16 bit) or two word data can be read by using the
buffer read application instructions.
0 Reading data using the AGGPP
For details, refer to the SWOGP-AD71P Operating Manual.
Data can be written to the buffer memory as follows:
(The writing of data may be restricted depending on the status of the
AD71. General write conditions are shown in Fig. 3.22. For further
details, refer to Section 3.5.1 to 3.5.6.)
a Writing data from the sequence program
One word (16 bit) or two word data can be written by using
the buffer write application instructions.
0 Writing data from the AGGPP
Transfers data in blocks from the A6GPP memory to the
buffer memory.
An additional function allows individual pieces of positioning data to
be written to the buffer memory if the AD71 is busy. For details,
refer to the SWOGP-AD71 P Operating Manual.
I REMARKS I
For buffer memory access instructions, refer to Chapter 6 "Programming."
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Mitsubishi MELSEC-A series Specifications

General

Brand	Mitsubishi
Model	MELSEC-A series
Category	Controller
Language	English