It might help to know how much current you are using. You can set this system up using a variable DC power supply and measure the current used. This with the length of time the unit will be in use at any given time will give some insight to the amount of available power needed. The first...
My experience with Modicon is limited and dated. I have been given the task of printing a ladder listing from a Modicon 484. I have available a copy of MODSOFT 2.11. Will this allow me to connect to the 484?