hey John, as far as I, know the MCFA A/C truck still uses a controller that is proprietary to MCF products.
And to call the micro-command system as Cat only is kind of a little incorrect, (even though the equivalent Mitsubishi product made during the same time frame used GE panels) as a VERY similar system was used by Daewoo for a few years too. I know the guy that designed it and owned a number of the patents was on forkliftaction a few years ago, and if I remember correctly, used "Pike" (or something close) as his "handle".

Thanks, I was trying to help one of our remote techs. Serial number is 600AB21644. If it's a Toyota, it was most likely made for them by Raymond?

The model 6HBE30 is a 6000 lb. low lift walk behind TOYOTA not a Cat. You may want to provide s/n to better ID what the controller is. For a period of time those that used Curtis controllers there was a number of design changes in a relatively short period of time.

No Cat does not have their own controllers - MICROCOMMAND was the last Cat controller & is no longer produced