Siemens SINAMICS G120 - Page 295

Setting functions
8.7 Application-specific functions
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
295
Converting UTC into RTC
An RTC can again be calculated from the UTC.
Procedure
Proceed as follows to calculate a date and time from a fault or alarm time saved in the UTC
format:
1. Calculate the number of seconds of UTC:
Number of seconds = ms / 1000 + days × 86400
2. In the Internet, you will find programs to convert from UTC into RTC, e.g.:
UTC to RTC (http://unixtime-converter.com/
)
3. Enter the number of seconds in the corresponding screen and start the calculation.
You have calculated the date and time of day.
Example:
Saved as alarm time in the alarm buffer:
r2123[0] = 2345 [ms]
r2145[0] = 14580 [days]
Number of seconds = 2345 / 1000 + 14580 × 86400 = 1259712002
Converting this number of seconds in RTC provides the date: 02.12.2009, 01:00:02.