KC868-a6 2 analog outputs (DAC)

[bikovalexand]

Hello, I'm working on a project that uses both outputs of a KC868-a6 v1.33 controller (0-10 V DAC). I'm writing the program in OpenPLC Editor.
The signal on both outputs changes proportionally, but not from 0-10 V, only from 0-3.3 V. What could be the problem?
 I tried downloading the latest version of KCS (v.2.2.20) to the controller, connecting to it via WiFi, and changing the output values. They output from 0 V to 3.3 V. I understand the LM258DR should amplify the signal by three times? Perhaps it's not working?
Thank you

[admin]

Do you means, use KCS v2.2.20 , go to monitor webpage, change DAC bar to 100%, it output 3.3v, not 10v?

[bikovalexand]

Do you means, use KCS v2.2.20 , go to monitor webpage, change DAC bar to 100%, it output 3.3v, not 10v?

Yes, that's exactly it. And if I put 50%, I get 1.67 V

[admin]

we have tested , no problem. see these photo.
   
   
   
   
   

[bikovalexand]

we have tested , no problem. see these photo.

I am attaching my photos.    
   
   
   
   
   

I started examining the controller board and discovered that resistors R63(4.7k) and R65(4.7k), which are shown on the schematic, were missing. I've attached a photo.