I have an application that I need to create to connect and send commands to an outdoor led sign. The problem is not connecting to sign, but the communications protocol commands that tell the sign to scroll, what text to display etc.. I have a few known commands for this type of sign, however the problem is that there are several commands that are not very clear to me.
One specific issue is the font type and size command, in the booklet attached it indicates that the command for fonts is "FT" with a default type of 2. However I am not sure what font type that is, or how to change it to Arial with a pitch of 10 or San Serif with a pitch of 10 for example. My question is are there standard protocol commands that are used by led sign displays? If so what are the font commands to change the type etc.? The signs came from a company called Mega Signs, however it seems that they are just the sales agent company as they do not have technical support: http://www.megasigninc.com/