Mitsubishi Q00JCPU User Manual page 388

6
FUNCTIONS
(3) Items that have priorities over the high speed interrupt when interrupt is
No. Item
1 Instruction
2 Link refresh
Multiple program
3
execution
4 Monitor
5 AC DOWN
(4) Items other than (1) to (3)
6
6.22 High Speed Interrupt Function
- 147
6.22.4 Restrictions
disabled
Table6.43 Items that hold high speed interrupt by interrupt disable
Interrupt is disabled during instruction execution.
Interrupt is disabled during refresh (bus access).
For MELSECNET/H, CC-Link or intelligent function module refresh, waiting time is max. 37.5 s when
modules are mounted on main base or max. 40 s when they are mounted on extension base.
When multiple programs are run, interrupt is disabled during program switching. Waiting time is 30 s.
When high speed interrupt function has been set, the recommended number of programs is 1.
For ladder monitor, device batch-monitor or device entry monitor, waiting time is as follows.
(0.096 number of device points+20) s
Waiting time is max. 20ms for high speed interrupt start.
(a) Interrupt program setting/fixed scan program setting in PLC parameter
dialog box
If "High speed execution" is selected at the "Interrupt program/fixed scan
execution program setting" section on the "PLC system" tab screen in the "(PLC)
parameter" dialog box of GX Developer, this setting is invalid for the high speed
interrupt function.
(b) High speed buffer transfer
Using the file registers outside the setting range (range in excess of the maximum
number of points) for high speed buffer transfer does not result in an error and
does not transfer data to outside the range. (The contents of the other devices are
not corrupted.)
(c) Precautions for program creation
As in the other interrupt programs, there are the following items as precautions for
program creation. (
Precaution
Section 3.1.3(7))