AutomationDirect DL205 - Page 336

DL205 User Manual, 4th Edition, Rev. D
5-112
Chapter 5: Standard RLL Instructions
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A
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D
Divide Formatted (DIVF)
Divide Formatted is a 16-bit instruction that divides the BCD
value in the accumuator by the BCD value (Aaaa), a range
of discrete bits. The specified range (Kbbb) can be 1 to 16
consecutive bits. The first part of the quotient resides in the
accumulator and the remainder resides in the first stack location.
NOTE: Status flags are valid only until another instruction uses the same flag.
In the following example, when X6 is on, the value formed by discrete locations X0–X3
is loaded into the accumulator using the Load Formatted instruction. The value in the
accumulator is divided by the value formed by discrete location C0–C3 using the Divide
Formatted instruction. The value in the lower four bits of the accumulator is copied to Y10–
Y13 using the Out Formatted instruction.
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230
240
250-1
260
DIVF
A aaa
K bbb
LDFX0
K4
X6
Load thevalue repr esented
by discretelocations X0 --X3
into theaccumulator
DIVF C0
K4
Dividethe valueinthe
accumulator withthe value
repr esented by discrete
location C0--C3
OUTF Y10
K4
Copy thelower 4bitsofthe
accumulatortodiscrete
locations Y10--Y13
040000 0
000
0
00008
(C0--C3)
(Accumulator)
2
X0X1X2X3
OFFOFFOFFON
C0C1C2C3
OFFONOFFOFF
Y10Y11Y12Y13
OFFOFFONOFF
The unused accumulator
bits areset to zero
00 00000 0
Fi rststack location contains
theremaind er
Acc.
Handheld Programmer Keystrokes
STR
$
SHFT
8
I
AND
V
OUT
GX
SHFT
5
F
0
A
4
E
ENT
6
G
ENT
1
B
4
E
0
A
ENT
SHFT
ANDST
L
3
D
0
A
4
E
ENT
5
F
5
F
3
D
NEXT NEXT NEXTNEXT
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DirectSOFT
Discrete Bit Flags Description
SP63 On when the result of the instruction causes the value in the accumulator to be zero
SP70 On anytime the value in the accumulator is negative
SP75 On when a BCD instruction is executed and a NON-BCD number was encountered
Operand Data Type DL260 Range
A aaa bbb
Inputs X 0-1777 -
Outputs Y 0-1777 -
Control Relays C 0-3777 -
Stage Bits S 0-1777 -
Timer Bits T 0-377 -
Counter Bits CT 0-377 -
Special Relays SP 0-777 -
Global I/O GX/GY 0-3777 -
Constant K - 1-16
DS Used
HPP Used