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6.22 High Speed Interrupt Function
6.22.2 High speed I/O refresh, high speed buffer transfer
6
FUNCTIONS
(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 QA base (QA1S6 B) cannot be connected, the A/QnA series intelligent function
modules are not the target.
(When the QA base (QA1S6 B) is connected, "PARAMETER ERROR (3006)" is detected.)
"PARAMETER ERROR (3006)" is also detected if an error occurs in intelligent function module
mounting 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.)
Diagram 6.83 High speed buffer transfer setting screen
Table6.39 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
Start (X/Y)
Head device No.
(X0 to FF0/Y0 to FF0)
I/O and intelligent function modules
Specify multiples of 16 only.
*1
Up to 6 points
for X input and Y
output,
respectively.
Points
Number of transferred bits
(16 to 4096)
High speed buffer
transfer setting
Starting I/O No.
Head I/O address / 10
H
(0 to FF
H
)
Intelligent function modules only
*2
Up to 6 points
for read and
write,
respectively.
Buffer memory start
Head address
(0 to FFFF
H
)
Intelligent function modules only
Specify even addresses and even
words only
*3
Points
Number of transferred bits
(1, 2 to FFFE
H
)
PLC side device start Head device No. D, W, R, ZR only
Set the buffer memory
transfer ranges.