A-15
Appendices
CJ2 CPU Unit Software User’s Manual
A-1 Instruction Functions
App
A-1-5 Comparison Instructions
Time Compari-
son
LD, AND,
OR + = DT,
<> DT, < DT,
<= DT, > DT,
>= DT
341 (=
DT)
342 (<>
DT)
343 (<
DT)
344 (<=
DT)
345 (>
DT)
346 (>=
DT)
Time comparison instructions compare two BCD time values
and create an ON execution condition when the comparison
condition is true.
There are three types of time comparison instructions, LD
(LOAD), AND, and OR. Time values (year, month, day, hour,
minute, and second) can be masked/unmasked in the com-
parison so it is easy to create calendar timer functions.
LD:
Logic
start
AND,
OR:
Contin-
ues on
rung
LD: Not
required
AND, OR:
Required
UNSIGNED
COMPARE
CMP
!CMP
020 Output Required
DOUBLE
UNSIGNED
COMPARE
CMPL 060 Output Required
SIGNED
BINARY COM-
PAR E
CPS
!CPS
114 Output Required
DOUBLE
SIGNED
BINARY COM-
PAR E
CPSL 115 Output Required
Instruction Mnemonic Code Symbol/Operand Function Location
Execution
condition
S1
C
S2
LD (LOAD):
AND:
OR:
S1
C
S2
S1
C
S2
C: Control word
S1: 1st word of
present time
S2: 1st word of
comparison time
Symbol
Symbol
Symbol
CMP(020)
S
1
S
2
S1: Comparison
data 1
S
2: Comparison
(>, >=, =, <=, <, <>)
Compares two unsigned binary values (constants and/or
the contents of specified words) and outputs the result to
the Arithmetic Flags in the Auxiliary Area.
Unsigned binary
comparison
Arithmetic Flags
CMPL(060)
S
1
S
2
S1: Comparison
data 1
S
2: Comparison
data 2
S1+1
S2+1
(>, >=, =, <=, <, <>)
Compares two double unsigned binary values (constants
and/or the contents of specified words) and outputs the
result to the Arithmetic Flags in the Auxiliary Area.
Unsigned binary
comparison
Arithmetic Flags
CPS(114)
S
1
S
2
S1: Comparison
data 1
S
2: Comparison
data 2
(>, >=, =, <=, <, <>)
Compares two signed binary values (constants and/or
the contents of specified words) and outputs the result to
the Arithmetic Flags in the Auxiliary Area.
Signed binary
comparison
Arithmetic Flags
CPSL(115)
S
1
S
2
S1: Comparison
data 1
S
2: Comparison
S1+1
S2+1
(>, >=, =, <=, <, <>)
Compares two double signed binary values (constants
and/or the contents of specified words) and outputs the
result to the Arithmetic Flags in the Auxiliary Area.
Signed binary
comparison
Arithmetic Flags
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