Hey Bill,
It's been a while..... I could do it in a plugin for you, in where you could push a button that would send a "NotifyPlugins(*********xx)" *********xx = your number code here. for Enable Limits, and then another notifyplugins(yyyyy), that would disable the limits. OR, you could tell me what ULED you want to watch, or I could make it where you can pick/set the ULED to watch, so that when it is active the limits would disable, etc. BUT, the Notifyplugins might be safer, since you dont have to worry about someone accidently turning on that LED in a random VB script, etc....
Let me know,
scott