There is a bunch of different ways you can accomplish this:
If all of your PLC addresses are within the same PLC, you can use an available integer value in your PLC and set it with each of those addresses.
Then just poll that integer value with messagelistbybit.
Or use one or more DataSubscriber2 components to subscribe to all addresses, place a few labels on the form and set them by using the DataChanged event of the DataSubscriber2 depending on what address value has changed. Instead of labels, you can use messagelistbybit and set its value directly.
Or use a BasicLabel control for each of your addresses and maybe change its back color within its ValueChanged event.
Or use some other controls.