Omron CPM1 Programming Manual

68
CPM1/CPM1A Interrupt Functions Section 1-6
4. An interrupt program cannot be written within a subroutine program. Do not
write an interrupt program between a SUBROUTINE DEFINE instruction
(SBN(92)) and a RETURN instruction (RET(93)).
Inputs used as interrupts cannot be used as regular inputs.
High-speed Counter
Instructions and
Interrupts
The following instructions cannot be executed in an interrupt subroutine when
an instruction that controls high-speed counters is being executed in the main
program:
INI(61), PRV(62), or CTBL(63)
The following methods can be used to circumvent this limitation:
Method 1
All interrupt processing can be masked while the instruction is being exe-
cuted.
Method 2
Execute the instruction again in the main program.
1,2,3... 1. This is the program section from the main program:
@INT(89)
000
100
000
INI(61)
000
000
000
@INT(89)
000
200
000
@PRV(62)
002
000
DM 0000
CTBL(63)
000
000
DM 0000
RSET LR 0000
LR 0000

Omron CPM1 Specifications

General

Model	CPM1
Manufacturer	Omron
Instruction Set	Basic and advanced instructions
Power Supply	100 to 240 VAC or 24 VDC
Communication	RS-232C
I/O Points	10, 20, 30, or 40 points depending on the model
Timers	Yes, multiple timers available
Counters	Yes, multiple counters available
Input Voltage	24V DC
Output Type	Relay or transistor
Number of I/O Points	10, 20, 30, 40
Communication Ports	RS-232C (optional)
Operating Temperature	0°C to 55°C
Storage Temperature	-20°C
Humidity	10% to 90% (non-condensing)
Dimensions	Varies depending on the model
Weight	Varies depending on the model
Program Memory	2048 steps (2K steps)