Omron CPM1 - PROGRAMING MANUAL 02-2001 Programming Manual page 456

Comparison Instructions
Precautions
Flags
Example
TR
0
00000
25505
25506
25507
Address Instruction
00000 LD
00001 OUT
00002 ZCP(––)
00003 AND
LL: #0010
0 0 1
7-19-6 DOUBLE AREA RANGE COMPARE – ZCPL(––)
438
Placing other instructions between ZCP(––) and the operation which accesses
the EQ, LE, and GR flags may change the status of these flags. Be sure to ac-
cess them before the desired status is changed.
Indirectly addressed DM word is non-existent. (Content of *DM word is
ER:
not BCD, or the DM area boundary has been exceeded.)
LL is greater than UL.
EQ: ON if LL
LE: ON if CD < LL.
GR: ON if CD > UL.
In the following example, the content of IR 200 (#6FA4) is compared to the range
#0010 to #AB1F. Since #0010
turned ON.
Operands
00000
TR 0
200
# 0010
# AB1F
25505
CD: 200
<
0 6 F A
Ladder Symbol
ZCPL(––)
CD
LL
UL
CD UL
#6FA4 #AB1F, the EQ flag and IR 10101 are
ZCP(––)
200
#0010
#AB1F
01000
01001
01002
Address Instruction
00004 OUT
00005 LD
00006 AND
00007 OUT
00008 LD
00009 AND
00010 OUT
UL: #AB1F
<
4 A B 1
Section
Greater Than
(above range)
Equal
(within range)
Less Than
(below range)
Operands
01000
TR 0
25506
01001
TR 0
25507
01002
20000: OFF
20001: ON
F
20002: OFF
Operand Data Areas
CD: Compare data
IR, SR, AR, DM, HR, LR
LL: Lower limit of range
IR, SR, AR, DM, HR, LR
UL: Upper limit of range
IR, SR, AR, DM, HR, LR
7-19