Mitsubishi Electric Q80BD-J61BT11N, User Manual

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App - 12 App - 12
MELSEC
APPENDIX
(6) Random access buffer
The random access buffer stores any data to be sent to other stations.
The reading and writing of data are performed using transient transmission.
(7) Automatic update buffer
The automatic update buffer stores automatic update data when performing
transient transmission (communication using the automatic update buffer) with
the AJ65BT-R2.
Set the automatic update buffer size for the AJ65BT-R2 in the Parameter settings
of the CC-Link Ver.2 Utility.
For more details on the automatic update buffer size settings, refer to Section 6.1.
[Communication example using the automatic update buffer]
CPU
R IFR
Automatic
update
buffer for
the first
module
Buffer memory
Master station AJ65BT-R2 (first module)
1)
2)
D
Automatic
update
buffer
memory
Automatic update
1) Data are written to the automatic update buffer of the 1st module.
2) The automatic update buffer data are transferred between the AJ65BT-R2
and CC-Link Ver.2 board by the link scan.
3) The data is read from the automatic update buffer for the 1st module.
: For details on the automatic update timing, refer to AJ65BT-R2 Type RS-
232C Interface Module User's Manual.