DVP-ES2/EX2/SS2/SA2/SX2/SE&TP Operation Manual - Programming Stop First circuit while SET which is lower than RST forms a Start First circuit. X2 Start first X1 Example 4 - Power down latched circuit The auxiliary relay M512 is a latched relay. Once X1 is ON, Y1 retains its status before power down and resumes after power up. X2 X1 Y1 M512 Example 5 - Conditional Control X3 Y1 X1 X1 Y1 X3 X4 Y2 X2 Y1 X2 Y2 X4 Y1 Y2 Because NO contact Y1 is connected to the circuit of Y2 output, Y1 becomes one of the conditions for enabling Y2, i.e.
for turning on Y2, Y1 has to be ON Example 6- Interlock control X3 Y1 X1 Y2 X1 Y1 X3 X2 X4 Y2 X2 Y1 X4 Y1 NC contact Y1 is connected to Y2 output circuit and NC contact Y2 is connected Y1 output circuit. If Y1 is ON, Y2 will definitely be OFF and vice versa. This forms an Interlock circuit which prevents both outputs to be ON at the same time. Even if both X1 and X2 are ON, in this case only Y1 will be enabled. Example 7 - Sequential Control Y2 Y2 X3 Y1 X1 Y2 Connect NC contact Y2 to Y1 output circuit and Y1 NO contact Y1 to Y2 output circuit. Y1 becomes X4 Y2 X2 Y1 one of the conditions to turn on Y2. In addition, Y1 will be OFF when Y2 is ON, which forms an Y2 sequential control process.
1-14 RST Y1 SET Y1 SET M512 RST M512