Omron C200HE User Manual

If 00002 is ON, the program represented by the following diagram clears CY with
CLC(41), adds the content of LR 25 to a constant (6103), places the result in DM
0100, and then moves either all zeros or 0001 into DM 0101 depending on the
status of CY (25504). This ensures that any carry from the last digit is preserved
in R+1 so that the entire result can be later handled as eight-digit data.

TR 0

MOV(21)

#0001

DM 0101

00002

CLC(41)

ADD(30)

 LR 25

#6103

DM 0100

MOV(21)

#0000

DM 0101

25504

25504

00000

LR

00002

00001

OUT

TR

0

00002

CLC(41)

00003

ADD(30)

LR

25

#

6103

DM

0100

00004

AND

25504

00005

MOV(21)

#

0001

DM

0101

00006

LD

TR

0

00007

AND NOT

25504

00008

MOV(21)

#

0000

DM

0101

Although two ADD(30) can be used together to perform eight-digit BCD addition,
ADDL(54) is designed specifically for this purpose.

Au: First augend word (BCD)

IR, SR, AR, DM, HR, TC, LR

Ad: First addend word (BCD)

IR, SR, AR, DM, HR, TC, LR

R: First result word

IR, SR, AR, DM, HR, LR

ADDL(54)

Au

Ad

R

@ADDL(54)

Au

Ad

R

Each of the following pairs must be in the same data area: Au and Au+1, Ad and
Ad+1, and R and R+1.

When the execution condition is OFF, ADDL(54) is not executed. When the
execution condition is ON, ADDL(54) adds the contents of CY to the 8-digit val-
ue in Au and Au+1 to the 8-digit value in Ad and Ad+1, and places the result in R
and R+1. CY will be set if the result is greater than 99999999.

Au + 1

Au

Ad + 1

Ad

R + 1

R

+

CY

CY