Mitsubishi Electronics FX3G User Manual
569
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
21 Real Time Clock Control – FNC160 to FNC169
21.4 FNC163 – TSUB / RTC Data Subtraction
21
FNC160
-F
NC1
69
69
R
eal
T
T
ime C
lock
C
ontrol
22
FNC17
0-F
NC
179
179
E
xternal D
evice
23
FNC
180
Alternate
Instructions
24
FN
C181-
FNC18
9
O
thers
25
FNC190
-F
NC1
99
99
Bl
oc
k D
ata
ata
Op
er
er
ation
26
FNC20
0-F
NC209
C
har
ac
te
r S
trin
g
Con
tro
tro
l
27
FNC2
10-
FNC21
10-
FNC21
9
Dat
a
a
Operati
on 3
28
FNC220
-F
NC2
49
49
Da
ta
C
omp
ari
ari
son
29
FNC25
0-F
N
C
269
D
ata T
abl
e
e
Operation
30
FNC2
70-
FNC276
FNC276
Ex
-Dev
ice
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
S1: This function is supported only in FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLCs.
S2: This function is supported only in FX
3U
/FX
3UC
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.
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.)
(Three devices are occupied.)
16-bit binary
Specifies "hour" of the time data (hour, minute, and second) used in subtraction.
(Three devices are occupied.)
(Three devices are occupied.)
16-bit binary
Stores the subtraction result (hour, minute, and second) of two time data.
(Three devices are occupied.)
(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
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D .b KnX KnY KnM KnS T C D
R
U \G
V Z Modify K H
E
" "
P
S1
S2
S1
S2
S1
S2
P
FNC 163
TSUB
−
−
−
Mnemonic
Operation Condition
16-bit Instruction
7 steps TSUB
TSUBP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
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
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.