Mitsubishi Electric MELSECQ Series User Manual page 70

5
FUNCTIONS
5
- 14
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(2) Coincidence detection interrupt function
The coincidence detection interrupt function allows making an interrupt request to a
programmable controller CPU at the time of coincidence detection to start the
interrupt program.
(Depending on the programmable controller CPU used, the coincidence detection
interrupt function cannot be used. For details, refer to CHAPTER 2.)
(a) Up to 16-point interrupt factors (SI) are allowed for a single MELSECNET-Q series
intelligent function module.
As shown in Table 5.3, the QD63P6 has 6-point interrupt factors (SI) for
coincidence detection.
SI No.
0
1
2
3
4
5
6 to 15
Timing of interrupt signal generation
Counter value coincidence
I/O signals
Coincidence signal
Interrupt request
Internal processing
of programmable
controller CPU
Interrupt request clear
Program processing
in programmable controller CPU
Figure 5.9 Timing of interrupt signal generation
(b) It takes approx. 150 s from when the QD63P6 detects coincidence until it makes
an interrupt request to a programmable controller CPU.
(c) Select [PLC parameter] - [PLC system] - [Intelligent function module setting] -
[Interrupt pointer settings] to set the interrupt factors (SI) of the QD63P6 and
interrupt pointers of the programmable controller CPU.
1) CPU side [Interrupt pointer start No.]
Set the start interrupt pointer number of the programmable controller CPU.
Setting range: 50 to 255
2) CPU side [Interrupt pointer No. of module]
Set the number of interrupt factors (SI).
Setting range: 1 to 6
5.3 Using the Coincidence Detection Function
search engine
Table 5.3 List of interrupt factors
Channel 1: Coincidence detection of coincidence detection point
Channel 2: Coincidence detection of coincidence detection point
Channel 3: Coincidence detection of coincidence detection point
Channel 4: Coincidence detection of coincidence detection point
Channel 5: Coincidence detection of coincidence detection point
Channel 6: Coincidence detection of coincidence detection point
(X02)
reset command
(Y01)
Interrupt factor
Reserved
Interrupt program
processing