Omron CP - PROGRAMMING MANUAL 05-2007 - Page 473

440
Logic Instructions Section 3-12
Description ORW(035) takes the logical OR of data specified in I
1
and I
2
and outputs the
result to R.
• The logical OR is taken of corresponding bits in I
1
and I
2
in succession.
• When either one of the corresponding bits in I
1
and I
2
are 1 or when both
of them are 0, a 0 will be output to the corresponding bit in R.
I
1
+ I
2
→ R
Flags
Precautions When ORW(035) is executed, the Error Flag will turn OFF.
If as a result of the OR, the content of R is 0000 hex, the Equals Flag will turn
ON.
If as a result of the OR, the leftmost bit of R is 1, the Negative Flag will turn
ON.
3-12-4 DOUBLE LOGICAL OR: ORWL(611)
Purpose Takes the logical OR of corresponding bits in double words of word data and/
or constants.
Ladder Symbol
Indirect DM addresses
in BCD
*D0 to *D32767
Constants #0000 to #FFFF (binary) ---
Data Registers DR0 to DR15
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to+2047 ,IR0 to –2048 to+2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area I
1
I
2
R
I
1
I
2
R
111
101
011
000
Name Label Operation
Error Flag ER OFF
Equals Flag = ON when the result is 0.
OFF in all other cases.
Negative Flag N ON when the leftmost bit of R is 1.
OFF in all other cases.
ORWL(611)
I
1
I
2
R
I
1
: Input 1
I
2
: Input 2
R: Result word