558
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
21 Real Time Clock Control – FNC160 to FNC169
21.9 FNC169 – HOUR / Hour Meter
21.9
FNC169 – HOUR / Hour Meter
Outline
This instruction measures the ON time of the input contact in units of hour.
1. Instruction format
2. Set data
3. Applicable devices
S
: "D
.b" cannot be indexed with index registers (V and Z).
Explanation of function and operation
1. 16-bit operation
When the accumulated ON time of the command input
exceeds the time stored in
,
is set to ON.
The current value less than one hour is stored in
+1
(unit: second).
: Time after which
is set to ON
Specify a value in units of hour.
: Current value in units of hour
+ 1 : Current value less than one hour (unit: second)
: Alarm output destination
It turns ON when the current value
exceeds the time specified in
.
• Specify a latched (battery backed) type data register as
so that the current value data can be
continuously used even after the PLC turns OFF.
If a general type data register is used, the current value data is cleared when the power of the PLC is
turned OFF or when the PLC mode switches from STOP to RUN.
• Even after the alarm output
turns ON, the measurement is continued.
• When the current value
reaches the maximum value of 16-bit data, the measurement is stopped.
For continuing the measurement, clear the current value stored in
and
+1.
Operand type
Description
Data type
Time after which
is set to ON (unit: hour)
16- or 32-bit binary
Current value (unit: hour) (latched (battery backed) type data register latched
(battery backed))
16- or 32-bit binary
Head device number to which alarm is output
16- or 32-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
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
3
3
3
3
3 3 3 3
3
3 3
3
3 3
3 3
3
3 3
3
S
3
FNC 169
HOUR
Mnemonic
Operation Condition
16-bit Instruction
7 steps
HOUR
Mnemonic
Operation Condition
Continuous
Operation
32-bit Instruction
D
13 steps
DHOUR
Continuous
Operation
S
1
S
D
2
S
1
D
1
D
2
S
1
S
S
1
D
1
S
2
D
2
Command
input
FNC169
HOUR
S
D
1
D
2
S
D
2
D
1
S
D
2
D
1
D
1
D
2
D
1
S
D
1
D
2
D
1
D
1
D
1