eurotherm et24xx driver question

[Sloan]

Hello again JHourigan,

Your help has been much appreciated, but I am still confused on one thing.  I understand the majority of the code in the images you pasted below, but one thing I am unclear on is when/where/how you program the controller to deliver a 0-10 V analog signal through output 1.  Can I see the section of code where you program this information?  For example, say a setpoint of 500K would result in an analog signal of 5.3V needing to come from output 1 to a power supply/high power diode driver -- where and how do you program this information?  I see where you tell the Eurotherm what the setpoint is.....but how does the Eurotherm then know what analog signal to send, and also from what output to send it.  If I can see that section of your code, I think my problems would be solved.

Thanks again,

Sloan

[JHourigan]

Sloan,

0-10V Analog is one option with which you can configure the ET24XX controller when you purchase it.  I think it is small board that is plugged in at the factory.  For instance if you were to buy a 2408 you could configure module 1 with "HZ" which is "0-10V DC heating".  There are lots of other options out there.  

Once this is installed, the PID algorithm will vary the output on module 1 up to 10V in depending on the difference between the setpoint and thermocouple temperature. 

Check your original documentation if you have an HZ then you have 0-10V on output 1, if you have a CZ then you have 0-10V on output 2.  If you have two outputs and one is 0-10V and the other is not then I would use the front panel buttons to configure to use the appropriate output.  Programmatically, the appopriate VIs must be in the configuration part of the VI tree.

Jeremy

[JHourigan]

Sloan,

I only have one output on my ET2416. So I did not have to deal with configuring which output to use in the code.

J

[Galaxiers]

I am setting up PID values in Eutotherm 2408 (P degC, I= ms and D= ms) and its working well. however when I am reading this, its giving me different values and i dont know the unist as well. any suggestions?