Running Indicator Lights

Indicator lights of the touch screen consist of three LEDs, including Power (PWR), Run (RUN) and communications (COM), just as shown in Figure 1-17.

Figure 1-17       SK series Running Indicator Lights

PWR turns green when it is powered;

RUN turns yellow if CPU works normally while it lights out if CPU fails;

COM turns yellow when the touch screen is connected to PLC.

Table 1-1 shows the display states of the 3 LED indicator lights on different working state.

Device state	Green LED（PWR）	Yellow LED（RUN）	Yellow LED（COM）
No power supply	○	○	○
Power on	●
CPU running	●	●
Communication with connected device	●	●	※
○：LED is OFF;  ●：LED is ON;   ※：LED is flashing

Table 1-1