[apalrd]

In LV and C I usually use a typedef enum to store the state, and a switch for the states. LV it cleaner in this with a case structure.

The state in C is usually stored as a global variable, with an accessor function to adhere to double-buffering (storing the previous state when the set state is different from the current state).

In LV we store the state in bus_state which is a data structure which is essentially global to us. Alternatively you could store it in a shift register locally or as a global variable.

Since a typedef enum can be used as a uint, you can use it to index an array. We use this frequently to determine the state of outputs or setpoints based on state without additional code to explicitly set the output.