I have a Mitsubishi M-H50C (1986) with a Meldas 300 control. Does anyone know what system variables store the tool number of the tool in the spindle and/or the tool in the ready position. Nothing in my machine documentation tells me what these variables are. This machine has a glitch that causes problems if we attempt to select a tool that is already in the ready position. I want to develop some program logic to work around this, but need the variable numbers to do that. ANY help will be appreciated!