25 pin, how to acquire data

[wujunwei]

Thanks a lot.
 
It will be great if there is any manual for reference. However, the furnace and controller were made by previous students, now they left university.
 
I have heard that one cable can connect to the PC for indicate and control the temperature, but I don't know which kind of cable is possible.
 
The attachment is the interface, hopefully you could give me some information.
 
Thanks a lot


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[Travis M]

Hello,

 

I have to agree with Dennis on this one.  The only other thing I could recommend would be if you have a program or something else that already communicates with the controller at the moment.  If you did then you could try and watch the lines with an oscilloscope and try and deduce the communication protocol and what is happening.  Also, maybe you can find some label on the controller about who the manufacturer is and then try and look up information that way.  If this is a controller that the previous students designed and built themselves, or if it?s some custom implementation of any sort then you?re going to be incredibly hard pressed to figure out how to communicate with it without completely reverse engineering it.

 

Good luck, and remember to document anything you find for future students.

 

[wujunwei]

Dennis, Travis, 
 
Thanks  a lot for your warm help! I was so careless and made a mistake.
 
I double checked the furnace again, which was one old product of ATS. Then I opened the controller and called ATS for help, now waiting for their reply.
 
without your suggestion, maybe I am still confused. later I will try my best to keep everything in order later.