9 - 16
9.1 PLC Parameters
9.1.2 High Performance model QCPU, Process CPU, Redundant CPU, Universal model QCPU
9
PARAMETERS
* 1 : Cannot be set when the Redundant CPU and Universal model QCPU is used.
* 2 : High-speed interrupt setting can be made only when the High Performance model QCPU is used.
* 3 : Can be set only when the Universal model QCPU is used.
* 4 : The Universal model QCPU cannot set the head number of the interrupt counter.
Table9.13 PLC system list (Continued)
Item Parameter No. Description Setting range Default value Reference
Points occupied by empty
slot *4
1007
H
Set the number of empty slots on
the main base unit/extension
base unit.
0 points/16 points/32 points/64
points/128 points/256 points/512
points/1024 points
16 points Section 4.6.1(5)
System interrupt setting
Interrupt counter
start No.
1008
H
Set the start No. of the interrupt
counters.
*4
(Can be set up to the number of
counter setting points - 256)
No setting Section 10.2.11(4)
Fixed scan interval
(n : 28 to 31)
Set the execution intervals of the
interrupt pointers (I28 to 31).
0.5ms to 1000ms
(0.5ms unit)
I28:100.0ms
I29:40.0ms
I30:20.0ms
I31:10.0ms
Section 10.11
High-speed interrupt
setting
*2
X Input 100FH
St the fixed scan interval, high-
speed I/O refresh setting and
high-speed buffer transfer
setting of the high-speed
interrupt pointer I49.
I49 : 0.2ms to 1.0ms
(0.1ms unit)
No setting
Section 3.1.3
Section 6.22
Y Output 1010H
Buffer read 1011H
Buffer write 1012H
Service processing
setting*3
1013
H
Select the service processing
execution method from the
followings.
• Execute the process as the
scan time proceeds
• Specify service process time
• Specify service process
execution counts
• Execute it while waiting for
constant scan setting
• 1 to 99 % (1 percent units)
• 1 to 10 times (1 time units)
• 0.2ms to 1000ms (0.1ms
units)
• With/without setting
Execute the
process as the scan
time proceeds: 10%
Section 6.25.2
Latch data backup
operation enabled
contact
*3
1014H
Sets the enabled contact device
No. at the time of backup of latch
data to the standard ROM.
---- Not used Section 6.29
Interrupt program/fixed
scan program setting
1008
H
Set whether an interrupt
program is executed at high
speed or not.
Execute at high speed/Do not
execute at high speed
Do not execute at
high speed
Section 3.1.3
Module synchronization 100CH
Set whether a CPU module
startup is synchronized with an
intelligent function module
startup.
Synchronize/Do not synchronize
with intelligent function module
startup
Synchronize with
intelligent function
module startup
----
A-PLC
*1
100DH
Set whether the special relays/
special registers for MELSEC-A
series (SM1000/SD1000 to
SM1299/SD1299) will be used or
not.
Use/Do not use the special
relays/special registers SM1000/
SD1000 and later
Use the special
relays/special
registers SM1000/
SD1000 and later
Section 10.3.2
Section 10.3.3