Secured 32-Bit Data - Mitsubishi LJ61BT11 User Manual

8.2.10 Secured 32-bit data

Programmable
controller CPU Master station
CPU device Remote register
W000
W001
W002
W003
Programmable
controller CPU
CPU device
W000
W001
W002
W003
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When the following conditions, 1) and 2) are satisfied in the CC-Link network, 32-bit
data in remote registers (RWr/RWw) between a programmable controller CPU and a
master/local station can be secured.
1) Access starts from a remote resister (RWr/RWw) address of an "even number".
Local station
Remote register
RWr00 RWw00
RWr01 RWw01
RWr02 RWw02
RWr03 RWw03
2) Access by the program must be made in units of even points.
Master station
Remote register
DFRO RWr00
RWr01
RWr02
RWr03
Programmable
controller CPU Master station
CPU device Remote register
W000
W001
W002
W003
W004
Because the start address on the remote resister
side is an "odd address", new and old data may be
mixed in 16-bit (1-word) units.
Programmable
controller CPU
CPU device
W000
W001
W002
W003
Because the access is made for each single point
(1-word), new and old data may be mixed in 16-bit
(1-word) units.
8 FUNCTIONS
Local station
Remote register
RWr00 RWw00
RWr01 RWw01
RWr02 RWw02
RWr03 RWw03
RWr04 RWw04
Master station
Remote register
FROM
RWr00
RWr01
RWr02
RWr03
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