Kinco-HP
User Manual
2.1.7 Real-time Clock (RTC)
The real-time clock built in the all CPU modules can provide real-time clock/calendar
indication. Users need to use KincoBuilder【PLC】->【Time of Day Clock...】to set the clock
when using RTC first time. Then users can use real-time clock instructions（READ_RTC、
SET_RTC、RTC_W、RTC_R）.
After CPU power off, the real-time clock can be maintained by lithium battery. The life of
battery is 5 years and the retaining duration is 3 years at normal temperature.
The HMI real time (RTC) funcation can provide real-time time/calendar,user can change RTC
from the system Setting , or through register LW10000 - LW10006 to modify time. But
because HP043 HMI donot have backup battery inside,RTC cannot be saved when
power-off. If precise time is required, user can set HMI RTC synchronization with PLC CPU.
Please refer to DTOOLS use manual chapter 2.7 RTC Set (2.7.3 System time and PLC Time
synchronization).HP070 RTC can be kept after power off.
2.1.8 Backup Battery
HMI-PLC can use certain specification lithium battery as backup battery. The backup
battery of HP043 only supplies power to the PLC.When PLC is power-off, it will use the
backup battery to maintain real-time clock and RAM. The HP070 backup battery supplies
power to the RTC of the HMI and PLC to maintain the clock..
The backup battery is removable, user can replace new battery by themselves
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