Why am I getting the error the error "Illegal functions s 0 n 2". I have a tag having a valid register address tied to it. This tag is attached to an analog numeric. When I enter input I get the above error some times and some times it wont complain. What could be the reason?

Trying to limit the number of characters a textbox can accept. There is no MaxLength property available. I have tried using the TextBox that comes through "Add Control" but it has no option to attach a tag. To summarize I am looking for a textbox control that can be attached to a tag and that has a ...