2WAY DIVERTER VALVE

Dear Friends,

I want to write program for 2 way diverter valves.
Each diverter valve has limit switch to check the position.

The process is as follow.

I need to choose a Tank from two tanks.
Each tank is connected with pipe lines.
In the junction of pipe line, we installed a 2 ways diverter valve ( with 5/2 way double coil solenoid valve).
One port of 2 way diverter valve is connected with tank 1 and other port is connected with tank 2.
When we need to use tank 1 , one port of the diverter valve ,connected with tank 1, must be open.
Limit switch shows the diverter reach require position or not.

So please kindly advise , how should I write the program for this.

Thanks.

Best Regards,