Clock Function - IDEC SmartAXIS FT9Z-1A01 User Manual

Clock Function

This section describes the internal clock function on the SmartAXIS.
This function enables you to control the time schedule for 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.
Function
Read clock
Set clock
Adjust function
Calendar/clock error
Setting the Clock with WindLDR
Set the current time on the SmartAXIS with WindLDR.
From the WindLDR menu bar, select Online > Monitor > Monitor.
1.
WindLDR enters monitor mode.
2. Select Online > PLC > Status.
The PLC Status dialog box is displayed.
Click Change for Calendar.
3.
The Calendar Settings 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.
Click OK.
4.
The date and time configured in the dialog box is written to the SmartAXIS.
The current time (calendar, clock) is updated every 500 ms and automatically stored in the special data
registers.
Sets the current time (calendar, clock). Set the current time with WindLDR or a user program that uses the
special data registers.
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.
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).
S A XI S P / L
M AR T R O I TE
Description
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