LS Industrial Systems XBC-DN10E, User Manual

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Chapter 6 Instruction Details
XBC E-Type Main Unit 6-117 Ver. 1
6.22 Output Terminal Compare Instruction (Unsigned)
6.22.1 CMP, CMPP, DCMP, DCMPP
Instruction
Area Available
Step
Flag
P M K F L T C S Z D.x R.x
Co
nst.
U N D R
Error
(F110)
Zero
(F111)
Carry
(F112)
CMP(P)
DCMP(P)
S1 O O O O O O O - O O O O O O O O
2~4 - - -
S2 O O O O O O O - O O O O O O O O
Operand Description Data Type
S1 Data or Data address to compare with S2 WORD/DWORD
S2 Data or Data address to compare with S1 WORD/DWORD
1) CMP (Compare)
(1) Compares S1 with S2 in size to set applicable flag of 6 special relays as its result.
(Unsigned Operation)
Flag F120 F121 F122 F123 F124 F125
SET basis <
≤
= >
≥ ≠
S1> S2 0 0 0 1 1 1
S1< S2 1 1 0 0 0 1
S1= S2 0 1 1 0 1 0
CMP P0005 P0006
P00020
Compare to P0005 and P0006
S1
S2
1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 1
1 0 1 1 0 1 1 0 0 1 1 0 1 0 1 1
Word
(2) If S1 and S2 is compared, operation result (S1=S2) is set to special flag.
(3) In the program, 6 special relays display the result of Compare Instruction previously used.
(4) 6 special relays can be used unlimitedly.
2) Program Example
(1) In case of P1000=100 and P1100=10, If Input signal P00000 is On, F123 is set because P1000 is bigger
than P1100 (P1000>P1100).
CMP, DCMP
P S
1 S2
CMPP,
DCMPP
S
1 S2
means
CMP P1000 P1100
P00000