Omron CPM1A User Manual

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7
The following diagram shows the program execution when an interrupt occurs.
Main program
Input interrupt
Interrupt program
MOV
ADD
END
SBN00
MOV
RET
PC model Input bits Response time
CPM1A-10CDR-(-V1)/
10CDT-D(-V1)/10CDT1-D(-V1)
IR 00003 to IR 00004
0.3 ms
(1 kHz in Counter Mode)
CPM1A-20CDR-(-V1)/
20CDT-D(-V1)/20CDT1-D(-V1)/
30CDR-(-V1)/30CDT-D(-V1)/
30CDT1-D(-V1)/40CDR-(-V1)/
40CDT-D(-V1)/40CDT1-D(-V1)
IR 00003 to IR 00006
()
Note When not using as interrupt input terminals, the input bits IR 00003 to IR 00006
can be used as normal input terminals.
Caution Although IORF(97) can be used in interrupt subroutines, you must be careful of
the interval between IORF(97) executions. If IORF(97) is executed too frequent-
ly, a fatal system error may occur (FALS 9F), stopping operation. The interval
between executions of IORF(97) should be at least 1.3 ms + total execution time
of the interrupt subroutine.
CPM1A Features and Functions Section 1-1

Omron CPM1A Specifications

General

Model	CPM1A
Type	Compact PLC
Communication Ports	RS-232C (optional)
Instruction Set	Basic and advanced instructions
Operating Temperature	0 to 55°C
Storage Temperature	-20 to 75°C
Humidity	10% to 90% RH (non-condensing)
Power Supply	24 VDC or 100-240 VAC
Expansion	Expansion I/O units available
Timers	128
Counters	256 counters
I/O Points	10, 20, 30, or 40 points (depending on model)