ISUPS2B004 Rev 1
Page 56 of 70
Ampcontrol Pty Ltd
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ISUPS 300Wh V2 USER MANUAL
ISUPS2B004 R2
– DEC/17
11.4 Time and Date
The system Time and Date is available in the Holding Registers as per the memory map shown
previously. Each of the registers; for seconds, minutes, hours, date, month and year are in BCD (Binary
Coded Decimal) format. Each of these registers can be read (using Read Holding Registers (0X03)) and
write can be done using Pre-set Multiple Registers (0X10). When the write is performed, the system
checks for validity and the system Time and Date is updated only if all the fields are valid.
NOTE
The system only checks for upper and lower bounds and not if the date
is valid. For example: if the external system sets the month as Feb and
Date as 31, though the date is invalid the UPS would save it as valid
since 31 is within the bounds of 01 to 31.
