
7 APPLICATION INSTRUCTION
7.19 Clock instruction
591
7
Comparing date data
LDDT
, ANDDT
, ORDT
These instructions compare the date data in the devices specified by (s1) and (s2). Or, these instructions compare the date
data in the device specified by (s1) with the current date.
Set the comparison target by (s3).
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
Processing details
• These instructions compare the date data in the devices specified by (s1) and (s2), or compare the date data in the device
specified by (s1) with the current date. Set the comparison target by (s3).
Ladder diagram
Structured text
(
indicates T=, DT<>, DT>, DT<=, DT<, or DT>=.)
Not supported
Operand
Description
Range
Data type
Data type (label)
(s1)
Head device number where the comparison data is stored
16-bit signed binary
ANY16
(s2)
Head device number where the comparison data is stored
16-bit signed binary
ANY16
(s3)
Comparison target setting value or the number of comparison
target data
0001H to 0007H,
8001H to 8007H
16-bit signed binary
ANY16
Operand
Bit
Word
Double word
Indirect
specification
Constant
Others
X, Y, M, L,
SM, F, B, SB
U
\G
T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U
\G
Z
LC
LZ
K, H
E
$
(s1)
(s2)
(s3)
• Comparing two specified date data
These instructions compare the date data in the device specified by (s1) with the date data in the device specified by (s2) in accordance with the
conditions set by (s3). (Devices are used as a normally open contact.)
• Comparing the specified date data with the current date
These instructions compare the date data in the device specified by (s1) with the current date data in accordance with the conditions set by (s3).
(Devices are used as a normally open contact.) The date data in the device specified by (s2) is regarded as dummy data and ignored.
LD
AND
OR
(s1)
(s2)
(s3)
(s1)
(s2)
(s3)
(s1)
(s2)
(s3)
(s1)
(s1)+1
(s1)+2
(s2)
(s2)+1
(s2)+2
Year
Month
Day
Year
Month
Day
(1980 to 2079)
Data range
(1 to 12)
(1 to 31)
(1980 to 2079)
Data range
(1 to 12)
(1 to 31)
Relational
operator
Comparison
operation
result
(s1)
(s1)+1
(s1)+2
Relational
operator
Year
Month
Day
(1980 to 2079)
Data range
(1 to 12)
(1 to 31)
Comparison
operation
result
Current date
(Year/month/day)
Summary of Contents for MELSEC iQ-F FX5 series
Page 1: ...MELSEC iQ F FX5 Series Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 21: ...19 PART 1 PART 1 OVERVIEW Part 1 consists of the following chapter 1 OVERVIEW ...
Page 98: ...96 4 STANDARD FUNCTIONS FUNCTION BLOCKS 4 2 Standard Function Blocks MEMO ...
Page 840: ...838 23 TIME DATA FUNCTIONS 23 4 Division MEMO ...
Page 887: ......