IDEC SmartAXIS Touch FT1A Series, User Manual

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SmartAXIS Touch User's Manual
3-101
4 Special Functions
3
Pr
oject
4.19 Clock Function
This section describes the internal clock function on the Touch.
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Feature Description
This function enable you to control time based applications such as lighting or air conditioning equipment using the
current time data stored in special data registers. The internal clock data is backed up by a secondary lithium battery.
The current time is reset when the backup data is lost, so the current time will need to be set again.
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Adjusting the Date and Time with WindLDR
Set the current time on the Touch with WindLDR.
Procedure
1
On the WindO/I-NV3 View tab, in the Workspace group, click (Control Function).
WindLDR starts.
2
On the WindLDR Monitor tab, click Monitor .
WindLDR enters monitor mode.
3
On the Online tab, in the PLC group, click Status .
The PLC Status dialog box is displayed.
4
Click Change for Calendar .
The Set Calendar and Time dialog box is displayed. The current time on the computer is displayed in the dialog box as
the initial value. The settings can also be changed as necessary.
5
Click OK .
The date and time configured in the dialog box is written to the Touch.
Function Description
Read clock
The current time (calendar, clock) is updated every 500 milliseconds and automatically
stored in the special data registers.
Set clock Sets the current time (calendar, clock). Uses the System Area or special data registers.
Adjust function
When clock data adjust flag M8021 is turned on from off, the seconds for the current time
are rounded up or rounded down based on 30 seconds to correct the seconds data for the
internal clock.
If the current seconds are between 0 and 29 seconds, the seconds are set to 0 when M8021
is turned on from off.
If the current seconds are between 30 and 59 seconds, the minutes are set to + 1 and the
seconds are set to 0 when M8021 is turned on from off.
Calendar/clock error
M8013:
This relay turns on if clock write processing or a clock adjust processing could
not be executed normally.
M8014:
This relay turns on if an error occurs while calendar/clock data is read from
the internal clock to the special data registers (D8008 to D8014).