IC690RFH008 Ladder Programs for Instruction Programming

IC690RFH008 Ladder Programs for Instruction Programming 

IC690RFH008 When pushbutton SB is pressed for the first time, X0 is turned on to turn on the coil of R0 for one scan cycle, its normally open contact is closed, the coil of Y0 is turned on and self-locked to start the external load work operation; at the same time, the pair of normally open contacts of Y0 is closed to prepare for the turning on of the coil of R1;

IC690RFH008 the 2nd time to press the button SB, X0 on, R0 again on a scan cycle, R1’s coil is turned on, R1’s normally closed contact breaks, Y0’s coil is disconnected, the external load stops working. Pressing SB repeatedly will repeat the above control process.

IC690RFH008 When SB is pressed, X0 is turned on, the coil of R0 is turned on for one scanning cycle, its normally open contact is closed, R2 is set (closed) and held, a pair of normally open contacts of R2 is closed, the coil of Y0 is turned on, and the external load is started to work and run; at the same time, the other pair of normally open contacts of R2 is closed to prepare for the turning on of the coil of R1; when SB is pressed again, X0 is turned on to make the coil of R1 turned on again. When SB is pressed again, X0 is turned on, making the coil of R0 turn on again for one scanning cycle, the coil of R1 is turned on, the normally open contact of R1 is closed, R2 is reset (disconnected) and held, the coil of Y0 is disconnected, and the external load stops working and running. After that, pressing SB sequentially will work the same as above.