Mitsubishi MELSEC iQ-F FX5 series, Programming Manual, Page: 587 / 888

7 APPLICATION INSTRUCTION
7.19 Clock instruction
585
7
Subtracting clock data
TSUB(P)
These instructions subtract the time data stored in the device numbers starting from (s2) from the clock data stored in the
device numbers starting from (s1), and store the result to the device numbers starting from (d).
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
Processing details
• These instructions subtract the time data stored in the device numbers starting from (s2) from the clock data stored in the
device numbers starting from (s1), and store the result to the device numbers starting from (d).
Ex.
When subtracting 3:50:10 from 10:40:20
• If the remainder is a negative time value, the borrow flag turns on. The actual result will be the remainder plus 24:00:00. For
example, if a time value of 10:42:12 is subtracted from another time value of 4:50:32, the remainder is -6:08:20. However,
the actual subtraction result will be 18:08:20.
• If the result is 0 (0:00:00), the zero flag turns on.
• The table below shows the related devices.
Ladder diagram Structured text
Not supported
Operand Description Range Data type Data type (label)
(s1) Head device number where the clock data that is subtracted is stored

16-bit signed binary ANY16
(s2) Head device number where the subtracting time value (or clock data
value) is stored

16-bit signed binary ANY16
(d) Head device number where the resultant clock data (or time value) is
stored

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)
            
(d)
            
Device Name Description
SM8020 Zero If the result is 0:00:00, this special relay turns on.
SM8021 Borrow If the execution result of the TSUB(P) instruction is less than 0:00:00, this special relay turns on.
(s1) (s2) (d)
(s1)
(s1)+1
(s1)+2
-
(s2)
(s2)+1
(s2)+2
(d)
(d)+1
(d)+2
Data range
(0 to 23)
(0 to 59)
(0 to 59)
Hour
Minute
Second
Data range
(0 to 23)
(0 to 59)
(0 to 59)
Hour
Minute
Second
Data range
(0 to 23)
(0 to 59)
(0 to 59)
Hour
Minute
Second
(s1)
(s1)+1
(s1)+2
-
(s2)
(s2)+1
(s2)+2
(d)
(d)+1
(d)+2
10
40
20
3
50
10
6
50
10
(s1)
(s1)+1
(s1)+2
-
(s2)
(s2)+1
(s2)+2
(d)
(d)+1
(d)+2
4
50
32
10
42
12
18
8
20