6
FUNCTIONS
6.22 High Speed Interrupt Function
6.22.2 High speed I/O refresh, high speed buffer transfer
6
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1
O
verv
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2
Per
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S
p
ecifica
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S
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ro
g
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Co
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I/O N
unb
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Assig
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m
e
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Me
mor
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s a
nd
File
s
Ha
nd
led
by CP
U Mo
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6
Func
tions
7
Co
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8
Co
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w
ith
Int
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Fun
ction
Mo
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(b) High speed buffer transfer setting
* 1 : Only multiples of 16 can be set for both the head device No. and the number of transferred bits.
* 2 : Since the AnS/A series-compatible extension base unit (QA1S6 B, QA6 B) cannot be
connected, the AnS/A series-compatible special function modules are not included. (A
"PARAMETER ERROR" (error code: 3006) occurs when the AnS/A series-compatible extension
base unit (QA1S6 B, QA6 B) is connected.)
A "PARAMETER ERROR" (error code: 3006) also occurs when an error is detected in the
intelligent function module mounting status check or buffer memory capacity check.
* 3 : Only when the specified number of transferred words is 1, an odd address can be specified.
POINT
It is recommended to mount the target modules of this function on the main base
unit.
(Access time to modules mounting on the main base unit is shorter than that on
the extension base unit.)
Figure 6.103 High speed buffer transfer setting screen
Table6.46 High speed I/O refresh setting and high speed buffer transfer setting
Item
Sub Item
Contents
Restrictions
Number of
Settings
High speed I/O
refresh setting
Points [DEC.]
Number of transferred bits
(16 to 4096)
I/O and intelligent function modules
Specify multiples of 16 only
*1
Up to 6 points
for X input and Y
output,
respectively.
Start [HEX.]
Start device number
(X0 to 0FF0/Y0 to 0FF0)
End [HEX.]
Start device number (X0 to 00FF/
Y0 to 0FFF)
High speed buffer
transfer setting
Starting I/O No.
[Start I/O number] divided by [10
H
(0 to FF
H
)]
Intelligent function modules only
*2
Up to 6 points
for read and
write,
respectively.
Points [DEC.]
Number of transferred bits (1, 2 to
FFFE
H
)
Intelligent function modules only
Specify even addresses and even
words only
*3
Buffer memory start
Start address (0 to FFFF
H
)
Buffer memory end
Start address (FFFD to FFFF
H
)
PLC side device start
Start device number
D, W, R, ZR only
PLC side device start
Start device number
Set the buffer memory
transfer ranges.
