Omron CPM1A Operation Manual page 32

CPM1A Features and Functions
Quick-response Inputs
Interval Timer Function
(Scheduled Interrupts)
Pulse Output Function
8
The CPM1A-10CDR-j(-V1)/10CDT-D(-V1)/10CDT1-D(-V1) PCs have 2
quick-response input terminals and the CPM1A-20CDR-j(-V1)/20CDT-
D/20CDT1-D(-V1), CPM1A-30CDR-j(-V1)/30CDT-D(-V1)/30CDT1-D(-V1)
and CPM1A-40CDR-j(-V1)/40CDT-D(-V1)/40CDT1-D(-V1)
quick-response input terminals. (The same terminals are used for quick-re-
sponse inputs and interrupt inputs.)
Quick-response inputs have an internal buffer, so input signals shorter than one
cycle can be detected.
Overseeing
processes
Input signal
(00003)
IR 00003
PC model
CPM1A-10CDR-j(-V1)/
10CDT-D(-V1)/10CDT1-D(-V1)
CPM1A-20CDR-j(-V1)/
20CDT-D(-V1)/20CDT1-D(-V1)/
30CDR-j(-V1)/30CDT-D(-V1)/
30CDT1-D(-V1)/40CDR-j(-V1)/
40CDT-D(-V1)/40CDT1-D(-V1)
CPM1A PCs are equipped with an interval timer which can be set from 0.5 ms to
319,968 ms in units of 0.1 ms. The timer can be set to trigger a single interrupt
(one-shot mode) or to trigger scheduled interrupts (scheduled interrupt mode).
Main program
MOV
ADD
END
Mode
One-shot Generates a single interrupt the first time that the timer times
out.
Scheduled interrupt Generates an interrupt each time that the timer times out.
Since the CPM1A with transistor output has a pulse output function capable of
outputting a pulse of 20 Hz to 2kHz (single-phase output), a stepping motor can
be controlled by the CPU Unit alone.
Program I/O Overseeing
execution refreshing processes
One cycle
Input bits
IR 00003 to IR 00004
IR 00003 to IR 00006
Interval timer time-out
Interrupt program
Function
Section 1-1
PCs have 4
Program I/O
execution refreshing
Min. input pulse
width
0.2 ms
SBN00
MOV
RET