Omron SYSMAC CJ - REFERENCE MANUAL 08-2008

449
Symbol Math Instructions Section 3-11
Description –CL(413) subtracts the binary values in Su and Su+1 and CY from Mi and
Mi+1, and outputs the result to R, R+1. When the result is negative, it is output
to R, R+1 as a 2’s complement.
Flags
DM Area D00000 to D32766
EM Area without bank E00000 to E32766
EM Area with bank En_00000 to En_32766
(n = 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants #00000000 to #FFFFFFFF
(binary)
---
Data Registers ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area Mi Su R
R+1
CY
–
RCY
Mi+1
Su+1
Mi
Su
(Signed binary)
(Signed binary)
(Signed binary)
CY will turn
ON when there
is a borrow.
Name Label Operation
Error Flag ER OFF
Equals Flag = ON when the result is 0.
OFF in all other cases.
Carry Flag CY ON when the results in a borrow.
OFF in all other cases.
Overflow Flag OF ON when the result of subtracting a negative number and
CY from a positive number is in the range 80000000 to
FFFFFFFF hex.
OFF in all other cases.
Underflow Flag UF ON when the result of subtracting a positive number and
CY from a negative number is in the range 00000000 to
7FFFFFFF hex.
OFF in all other cases.
Negative Flag N ON when the leftmost bit of the result is 1.
OFF in all other cases.