i'm confused about fanuc part number. i need to add an analog input module to my rj-3 controller, i can find this module as being an AAD04A. but if you look on ebay, for example, you will find half a dozen of these modules for sale with different type numbers. is there any significance to the type number, or is it just some sort of batch number. will the module works with the controller as long as it is an AAD04A?
thanks