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CPM1/CPM1A Interrupt Functions Section 1-6

2. This is the program section from the interrupt subroutine:

Note 1. Define interrupt routines at the end of the main program with SBN(92) and

RET(93) instructions, just like regular subroutines.

2. When defining an interrupt routine, a “SBS UNDEFD” error will occur dur-

ing the program check operation, but the program will be executed normal-

ly.

1-6-2 Input Interrupts

The 10-pt CPU Units (CPM1-10CDR-@ and CPM1A-10CDR-@) have two

interrupt inputs (00003 and 00004).

The 20-, 30-, and 40-pt CPU Units (CPM1-20CDR-@, CPM1A-20CDR-@,

CPM1-30CDR-@(-V1), CPM1A-30CDR-@

and CPM1A-40CDR-@) have four

interrupt inputs (00003 to 00006).

There are two modes for input interrupts: input interrupt mode and counter

mode.

CPM1 PCs

SBN(92) 000

@CTBL(63)

000

DM 0000

25313

0000

10-pt CPU Units

(CPM1-10CDR-@)

20- and 30-pt CPU Units

(CPM1-20CDR-@and

CPM1-30CDR-@(-V1))

00003

00004

00005

00006

00003

00004

24VDC

Omron CPM1 Programming Manual

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