A-1-14 Table Data Processing Instructions - Omron CP1E CPU UNIT SOFTWARE User Manual

Appendices
A-1-14 Table Data Processing Instructions
Instruction Mnemonic
SWAP BYTES SWAP
FRAME FCS
CHECKSUM
A-30
Variations Symbol/Operand
@
SWAP(637)
N
R1
N: Number of words
R1: 1st word in range
@
FCS(180)
C
R1
D
C: First control word
R1: First word in range
D: First destination word
Function
Switches the leftmost and rightmost bytes in all of the words in the
range.
Byte position is swapped.
R1
Calculates the FCS value for the specified range and outputs the
result in ASCII.
R1
W (Table length)
ASCII conversion
Calculation
FCS value
D
C: First control word
15
C
W: Number of words/bytes in range
&1 to &65535 (decimal) or
#0001 to #FFFF (hex)
15 14 13 12 11
C+1
00 0000 0000 0000
Starting byte (Valid only when bit 13 is 1.)
0: Leftmost byte
1: Rightmost byte
Calculation units
0: Words
1: Bytes
0
CP1E CPU Unit Software User's Manual(W480)
N
0
0
0