Mitsubishi FX3G Series

562
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
21 Real Time Clock Control – FNC160 to FNC169
21.4 FNC163 – TSUB / RTC Data Subtraction
21.4 FNC163 – TSUB / RTC Data Subtraction
Outline
This instruction executes subtraction of two time data, and stores the subtraction result to word devices.
1. Instruction format
2. Set data
3. Applicable devices
S: This function is supported only in FX3U/FX3UC PLCs.
Explanation of function and operation
1. 16-bit operation (TSUB)
The time data (hour, minute, and second) stored in , +1, and +2 is subtracted from the time data
(hour, minute, and second) stored in , +1, and +2, and the subtraction result (hour, minute, and
second) is stored in , +1, and +2.
When the operation result is smaller than 0 hour, the borrow flag turns ON, and the value simply acquired by
subtraction added by 24 hours is stored as the operation result.
When the operation result becomes "0" (0:0:0), the zero flag turns ON.
Operand type Description Data type
Specifies "hour" of the time data (hour, minute, and second) used in subtraction.
(Three devices are occupied.)
16-bit binary
Specifies "hour" of the time data (hour, minute, and second) used in subtraction.
(Three devices are occupied.)
16-bit binary
Stores the subtraction result (hour, minute, and second) of two time data.
(Three devices are occupied.)
16-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
 .b KnX KnY KnM KnS T C D R U\G V Z Modify K H E "  "P
3333 S 3
3333 S 3
3333 S 3
P
FNC 163
TSUB
−
−
Mnemonic Operation Condition
16-bit Instruction
7 steps
TSUB
TSUBP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
S 1 
S 1
S 2
D
S 1 
S 1
S 2
S 2 
D
S 2 S 2 S 2
S 1 S 1 S 1
D D D
Command
input
FNC163
TSUB
S 1  S 2  D 
−
S 1 
+1 (minute)
(hour)
+2 (second)
S 1 
S 1 
S 2 
+1 (minute)
(hour)
+2 (second)
D 
+1 (minute)
(hour)
+2 (second)
D 
D 
→
( , +1, +2) − ( , +1, +2)
→ ( , +1, +2)
S 1  S 1  S 1  S 2  S 2  S 2 
D  D  D 
S 2 
S 2 
The setting range of "hour" is from 0 to 23.
The setting range of "minute" is from 0 to 59.
The setting range of "second" is from 0 to 59.