2-1
Section
CPM2A/CPM2C Interrupt Functions
30
2-1-2 Interrupt Inputs
By turning the CPU Unit’s built-in input points from OFF to ON, the normal pro-
gram can be stopped and the interrupt program executed. The interrupt inputs
are allocated to four points (00003 to 00006, see note).
Normal
program
Interrupt input
Interrupt
program
Subroutine
(See note.)
(See note.)
Note
Input points 00005 and 00006 do not exist in CPM2C CPU Units with only 10 I/O
points or in CPM2C-S CPU Units.
Input number
(Note 1)
Interrupt
number
Subroutine
number
(Note 2)
Minimum
input signal
width
Interrupt
response time
00003
0
000
50
µ
s
0.3 ms (from
h
i
00004
1
001
µ
(
when input turns
ON until program
00005
(See note 3.)
2
002
ON until program
execution)
00006
(See note 3.)
3
003
Note
1. Input numbers 00003 to 00006 can be used for any of the following func-
tions: interrupt inputs, interrupt inputs (counter mode), or quick-response in-
puts. When not being used for any of these, they can be used as ordinary
inputs.
2. Subroutine numbers 000 to 003 are the subroutine numbers for interrupt
programs started up when interrupt inputs or count-up interrupts for inter-
rupt inputs (counter mode) are generated. When not being used for this pur-
pose, they can be used as ordinary inputs.
3. Input points 00005 and 00006 do not exist in CPM2C CPU Units with only 10
I/O points or in CPM2C-S CPU Units.
