Special Math Instructions; Find Maximum - Max - Omron CQM1H - PROGRAM Programming Manual

Special Math Instructions

Description
Flags
Example
00000
R+3: LR 04
F F F F
Remainder (–4)

5-23 Special Math Instructions

5-23-1 FIND MAXIMUM – MAX(––)
MAX(−−)
C
R
1
D
338
DBS(––) divides the 32-bit (8-digit) signed binary data in Dd+1 and Dd by the
32-bit signed binary data in Dr+1 and Dr, and outputs the 16-digit signed
binary result to R+3 through R. The quotient is placed in R+1 and R, and the
remainder is placed in R+3 and R+2.
Note Refer to 1-7 Calculating with Signed Binary Data for more details.
R+3
Dr+1
ER: Dr+1 and Dr contain 0.
Indirectly addressed EM/DM word is non-existent.
(Content of *EM/*DM word is not BCD, or the EM/DM area boundary
has been exceeded.)
EQ: ON when the content of R+1 and R (the quotient) is 0, otherwise OFF.
In the following example, DBSL(––) is used to divide the signed binary con-
tents of IR 101 and IR 100 with the signed binary contents of DM 0021 and
DM 0020 and output the result to LR 24 through LR 01.
Dd+1: IR 101
F F
÷
Dr+1: DM 0021
0 0
R+2: LR 03 R+1: LR 02
F F F C F F
Ladder Symbols
@MAX(−−)
C
R
1
D
Remainder
R+2
Dr
Address Instruction
DBSL(−−) 00000
00001
100
DM 0020
LR 01
Dd: IR 100
7 A B 1 5 C
Dr: DM 0020
0 0 0 0 1 A
R: LR 01
F A D F 7 0
Quotient (–336)
IR, SR, AR, DM, EM, HR, TIM/CNT, LR, #
IR, SR, AR, DM, EM, HR, TIM/CNT, LR
IR, SR, AR, DM, EM, HR, LR
Section 5-23
Quotient
R+1 R
Dd+1 Dd
Operands
LD
DBSL(−−)
DM
LR
(–8,736,420)
(26)
(–336,016 and –4/26)
Operand Data Areas
C: Control data
R : First word in range
1
D: Destination word
00000
100
0020
21