Mitsubishi FX3U Series Programming Manual

565
FX3G/FX3U/FX3GC/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
21 Real Time Clock Control – FNC160 to FNC169
21.5 FNC164 – HTOS / Hour to Second Conversion
21
FNC160-FNC169 Real Time Clock Control
22
FNC170-FNC179 External Device
23
FNC180 Alternate Instructions
24
FNC181-FNC189 Others
25
FNC190-FNC199 Block Data Operation
26
FNC200-FNC209 Character String Control
27
FNC210-FNC219 Data Operation 3
28
FNC220-FNC249 Data Comparison
29
FNC250-FNC269 Data Table Operation
30
FNC270-FNC275 Ex-Device Inverter Comms
2. 32-bit operation (DHTOS and DHTOSP)
The time data (hour, minute, and second) stored in , +1, and +2 is converted into data in units of
"second", and stored to +1, .
For example, when "35 hours 10 minutes 58 seconds" is specified, the operation is as follows:
Error
An operation error is caused in the following case; The error flag M8067 turns ON, and the error code is stored in
D8067.
• When the data of , + 1 or + 2 is outside the allowable range (error code: K6706)
Program example
In the program shown below, the time data read from the built-in PLC real time clock is converted into data in units of
"second", and stored to D100 and D101 when X020 turns ON.
Operation
• Clock data reading operation by TRD (FNC166) instruction
• Conversion operation into "second" by DHTOS (FNC164) instruction
S S S
D D
Command
input
FNC164
DHTOS
S  D 
hour
minute
second
S 
+1
+2
secondS 
S 
(0 to 32767)
(0 to 59)
(0 to 59)
D  D  +1
35
10
58
S 
+1
+2
126658S 
S 
D  D  +1
S S S
X020
D100
FNC166
TRD
D10
END
FNC164
DHTOS
D13
2004
1
31
D11
D10
D12
Year
20
21
23
D14
D13
D15
6D16
Month
Day
Hour
Minute
Second
Real time
clock
Day of week
Time data
Clock data
20
21
23
73283
D101,D100D13
D14
D15

Mitsubishi FX3U Series Specifications

General

Model	FX3U Series
Program Memory	64k steps
Execution Speed	0.065 μs/basic instruction
Type	PLC (Programmable Logic Controller)
Power Supply	100-240V AC
I/O Points	Up to 384
Communication	USB
Expansion	Supported via expansion modules
High-Speed Counters	Up to 6 channels
Analog Input/Output	Available via expansion modules
Temperature Range	0 to 55°C
Programming Language	Ladder Logic, Structured Text
Built-in Functions	PID control
Humidity	5 to 95% (non-condensing)