Chapter 5 Relay Ladder Logic Programming 96
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RTC Mode 4 (30-second compensator)
The 30-second compensator, Mode 4, allows the RTC coil acting based on week, hour, minute and second. The
configuration dialog below shows the setting of week, hour, minute and second for the TRC mode 4.
Symbol Description
①
RTC adjustment week
②
RTC mode 4
③
RTC present hour
④
RTC present minute
⑤
RTC adjustment hour
⑥
RTC adjustment minute
⑦
RTC adjustment second
⑧
RTC code (R01~R1F, total 31 group)
Example 1: preset second < 30s
※ The current time will return to 8:00:00 when it achieves 8:00:20 at first time, and RTC contact, R01, will turn ON,
then it does not turns OFF until the present time achieves 8:00:20 again. Then time keeps going. So, this means that
RTC status bit is ON for 21 seconds.
Example 2: preset second >= 30s
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