Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 341

Comparison Instructions
Present time data
15 08
Minute (00 to
S
1
59, BCD)
Day of month
S +1
1
(01 to 31, BCD)
Year (00 to
S +2
1
99, BCD)
Compares only hours and
minutes data.
Previous data comparison instructions compared data in 16-bit units. The
time comparison instructions are limited to comparing 8-bit time values.
The following table shows the structure of the CPU Unit's internal Calendar/
Clock Area.
Addresses
A35100 to A35107 Second (00 to 59, BCD)
A35108 to A35115 Minute (00 to 59, BCD)
A35200 to A35207 Hour (00 to 23, BCD)
A35208 to A35215 Day of month (01 to 31, BCD)
A35300 to A35307 Month (01 to 12, BCD)
A35308 to A35315 Year (00 to 99, BCD)
The Calendar/Clock Area can be set with a Programming Device (including a
Programming Console), DATE(735) instruction, or "CLOCK WRITE" FINS
command (0702 hex).
Summary of Time Comparison Instructions
The following table shows the function codes, mnemonics, names, and func-
tions of the 18 time comparison instructions.
Code Mnemonic
341 LD= DT LOAD EQUAL
AND=DT AND EQUAL
OR=DT OR EQUAL
342 LD<>DT LOAD NOT EQUAL
AND<>DT AND NOT EQUAL
OR<>DT OR NOT EQUAL
343 LD<DT LOAD LESS THAN
AND<DT AND LESS THAN
OR<DT OR LESS THAN
344 LD<=DT LOAD LESS THAN OR EQUAL
AND<=DT AND LESS THAN OR EQUAL
OR<=DT OR LESS THAN OR EQUAL
345 LD>DT LOAD GREATER THAN
AND>DT AND GREATER THAN
OR>DT OR GREATER THAN
346 LD>=DT LOAD GREATER THAN OR EQUAL
AND>=DT AND GREATER THAN OR EQUAL
OR>=DT OR GREATER THAN OR EQUAL
Comparison time data
07 00 15
Second (00 to Minute (00 to
S
2
59, BCD)
59, BCD)
Hour (00 to
Day of month
S +1
2
23, BCD)
(01 to 31, BCD)
Month (01 to
Year (00 to
S +2
2
12, BCD)
99, BCD)
Year, month, day, and seconds
data is masked.
Contents
Name
Section 3-7
08 07 00
Second (00 to
59, BCD)
Hour (00 to
23, BCD)
Month (01 to
12, BCD)
Function
True if
S1 = S2
True if
S1 S2
True if
S1 < S2
True if
S1 S2
True if
S1 > S2
True if
S1 S2
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