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2 Simple Application Controllers
6.19
Hour Meter Block
The Hour Meter is used to track the amount of time that a device has been in operation. This
can be very useful for preventative maintenance schedules or for performing feasibility studies.
The timing starts at the receipt of an Input signal and retains the accumulated time through
system shutdowns or power failures. When the Set Time value is reached, the block Output will
turn ON. The Hour Meter will continue recording time after the Output time is reached. A signal
to the Clear pin will reset the current time value to zero.
In the case of Ver. 3.00 or later
The actual values of Hour Meter FBs (197-200) are saved to EEPROM.
The EEPROM can be written up to 10,000 times.
Table 6.20: Hour Meter Function Block
Function
0 0
0
I
P
O
C
H
M
Set Item
I
Input pin for hour meter operation
C
Clear pin for function block
1) Time units are either hh:mm or mm:ss
2) Time setting range:
FB
a) 0-32767 hours with an initial value 0
b) 0 - 59 minutes with an initial value 0
c) 0 - 59 seconds with an initial value 0
1) The output is turned ON after the set time has elapsed.
2) The function block retains the previous value if there is no signal
from the input pin and restarts with this value when the input is
given a signal again.
3) The current time value is reset if the clear pin receives a signal.
4) The following items are available for other function blocks:
Output
a ) In hh:mm setting
• Set Hour
• Current Hour
• Set Minute
• Current Minute
b ) In mm:ss setting
• Set Minute
• Current Minute
• Set Second
• Current Second
Description
Function Blocks 6
6 - 46
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