Chapter 3 PLC System Configuration & Settings 3.9 Setting a RTC The RTC in a PLC can be set by a tool provided by ISPSoft. Before the real-time clock in a PLC is set, users have to make sure that ISPSoft is connected to the PLC normally. Please refer to section 2.4 for more information about communication setting. After users click Set RTC on the Tools menu, the SET RTC window will appear. The date displayed on the top of the window is the date retrieved from the PLC when the window is opened, and the time displayed on the top of the window is the time retrieved from the PLC when the window is opened.
If the time on the computer’s clock is the time on the real-time clock, users can select the Computer option button, and click OK . If users want to set the real-time clock by themselves, they can select the Custom option button, and type a date and a time in the boxes. If users click in the box, an auxiliary tool will appear. Click OK after the setting of the real-time clock is complete 3-255