Omron C200HX User Manual

Mi, M+1,Su, and Su+1 are not BCD.

Indirectly addressed DM word is non-existent. (Content of 

DM word is

not BCD, or the DM area boundary has been exceeded.)

CY: 

ON when the result is negative, i.e., when Mi is less than Su.

EQ:

ON when the result is 0.

The following example works much like that for single-word subtraction. In this
example, however, BSET(71) is required to clear the content of DM 0000 and
DM 0001 so that a negative result can be subtracted from 0 (inputting an 8-digit
constant is not possible).

CLC(41)

@SUBL(55)

HR 20

120

DM 0100

CLC(41)

@SUBL(55)

DM 0000

DM 0100

DM 0100

TR 0

25504

HR 2100

00003

25504

HR 2100

First 
subtraction

Second
subtraction

Turned ON to indicate
negative result.

@BSET(71)

#0000

DM 0000

DM 0001

00000

LD

00003

00001

OUT

TR

0

00002

CLC(41)

00003

@SUBL(55)

HR

20

120

DM

0100

00004

AND

25504

00005

@BSET(71)

#

0000

DM

0000

DM

0001

00006

CLC(41)

00007

@SUBL(55)

DM

0000

DM

0100

DM

0100

00008

LD

TR

0

00009

AND

25504

00010

OR

HR

2100

00011

OUT

HR

2100