Decode (Deco) - Automationdirect.com DL05 User Manual

Decode The Decode instruction decodes a 5 bit
(DECO) binary value of 0–31 (0–1F HEX) in the
accumulator by setting the appropriate bit
position to a 1. If the accumulator contains
the value F (HEX), bit 15 will be set in the
accumulator. If the value to be decoded is
greater than 31, the number is divided by
32 until the value is less than 32 and then
the value is decoded.
In the following example when X1 is on, the value formed by discrete locations
X10–X14 is loaded into the accumulator using the Load Formatted instruction. The
five bit binary pattern in the accumulator is decoded by setting the corresponding bit
position to a "1" using the Decode instruction.
DirectSOFT
X1
LDF X10
K5
Load the value in
represented by discrete
locations X10–X14 into the
accumulator
DECO
Decode the five bit binary
pattern in the accumulator
and set the corresponding
bit position to a "1"
Handheld Programmer Keystrokes
$ B
ENT
STR 1
L D F
SHFT
ANDST 3 5
D E C O
SHFT
3 4 2 INST#
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Acc. 0 0 0 0 0 0 0 0
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Acc.
0 0 0 0 0 0 0 0
B A F
ENT
1 0 5
ENT
Standard RLL Instructions
Bit Operation Instructions
15 14 13 12 11 10 9
0 0 0 0 0 0 0 0 0 0 0 0 0
15 14 13 12 11 10 9
0 0 0 0 0 0 0 0 0 0 0 0 1
5–81
DECO
X14 X13 X12 X11 X10
OFF ON OFF ON ON
8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 1 0 1 1
The binary vlaue
is converted to
bit position 11.
8 7 6 5 4 3 2 1 0
0 0 0 0 0 0 0 0 0 0 0