Omron SYSMAC CP Series, User Manual

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Appendices
A-26
CP2E CPU Unit Software User’s Manual(W614)
DATA
ENCODER DMPX @ FInds the location of the first or last ON bit within the source word
(or 16-word range), and writes that value to the specified digit (or
byte) in the result word.
C: Control Word
• 16-to-4 bit conversion
• 256-to- 8 bit conversion
Instruction Mnemonic Variations Symbol/Operand Function
DMPX(077)
S
R
C
S : 1st source word
R : Result word
C : Control word
C
R
C
R
FInds leftmost bit
(Highest bit address)
Finds leftmost bit
(Highest bit address)
Leftmost bit Rightmost bit
Leftmost bit
16-to-4 bit conversion
l
=1 (Convert
2 words.)
16-to-4 bit decoding
(Location of leftmost
bit (m) is writ-ten to R.)
n=2 (Start with digit 2.)
256-to- 8 bit conversion
l =0 (Convert one 16-word range.)
256-to- 8 bit decoding
(The location of the leftmost bit in the
16-word range (m) is written to R.)
n=1 (Start with byte 1.)
C 0
8 11 12 15
l n
0 3 4 7
Conversion process
0: 16-to-4 bits (word to digit)
Bit to encode
0: Leftmost bit (highest bit address)
1: Rightmost bit (lowest bit address)
Number of digits/bytes to be converted
0 to 3 (1 to 4 digits)
Specifies the first digit/byte
to receive converted data.
0 to 3 (digit 0 to 3)
C 1
Specifies the first digit/byte
to receive converted data.
0 or 1 (byte 0 or 1)
Number of digits/bytes to be converted
0 or 1 (1 or 2bytes)
8 11 12 15
l n
0 3 4 7
Bit to encode
0: Leftmost bit (highest bit address)
1: Rightmost bit (lowest bit address)
Conversion process
1: 256-to- 8 bits (16-word range to byte)