1. Basic Program Design Examples Control Program X1 X3 X0 Filling yellow pigment Y0 Yellow control valve Filling green pigment X2 X3 X0 Y1 Filling blue pigment Blue control valve Program Description: z The master switch of filling control needs to be turned on (X0 = ON) before filling started. When both yellow and blue are filled at the same time, it will become green. z When the switch of filling yellow pigment is turned on, X1 = ON. The first MC ~ MCR instruction will be executed. Y0 = ON, and the system begins to fill the yellow color. z When the switch of filling blue pigment is turned on, X2 = ON. The second MC ~ MCR instruction will be executed.
Y1 = ON, and the system begins to fill the blue color. z When the switch of filling green pigment is turned on, X3 = ON, both of the two MC ~ MCR instructions will be executed, and the system begins to fill the green color. DVP-PLC Application Examples 1-20 MC N0 MCR N0 MC N0 MCR N0