Table of Contents
Advertisement
APPENDICES
MELSEC-A
(2)
AnACPU dedicated command
Intervening Times
Scan Count Required for
mand
Processing
file
rogram
Extension
comment
Batch read
Batch write
Bit units
Test
(random write)
Bit units
Monitor data
registration
Monitor
(1) The PC CPU can only process one of these operations with each END
processing. If the A6GPP and AJ71C24 access a given PC CPU at the
same time, one processing must wait until the other processing is
completed. Therefore, the scan count required for processing further
increases.
.
JR
Bit units
Word units
Word units
Direct read
Direct write
Batch read
Batch write
(2) Even though communications using AJ71C24 is not performed, scan
time increases 0.2 msec (0.1 msec with A3HCPU, A2ACPU(S1), and
A3ACPU).
Word units
I
OR
1
2.07 ms
1
64 devices
JW
Bit units
Word units
Bit units
APP- 10
1.19 ms
(2
'R' Only)
JT
QT
MQ
NR
NW
DR
DW
256 devices
0.99 ms
(1 scan when 'enable
during RUN' is set [exclud-
i n , , ~ 1 ,
Word units
1 scan
JM
QM
MJ
160 devices
0.91 rns
0.93 rns
1.35 ms
2.30 ms
2.57 ms
2.31 ms
2 59
ms
QW
-
1.34 ms
20 devices
10 devices
20 devices
64 devices
64 devices
128 bytes
2.32 ms
- - -
-
(1 scan when 'enable
during RUN' is set [exclud-
ing
~ 1 )
-
40 devices
3 scans
(4 scans when a set range
covers several blocks)
2 scans
64 devices
-
1 scan for device 'R' only
Advertisement
Table of Contents
