Hi there,
I have the same Doepfer system that came with the A-190-4 MIDI to CV module and it has been a royal pain to use. You need to navigate the odd menu interface and set MIDI channel to match the MIDI on your Cirklon sequencer channel settings.
There should also be a clock and MIDI setting on your Cirklon and Octatrack sequencer. These have to match the values in the Doepfer MIDI to CV module or it won't work.
I have an Elektron Octatrack and it took a lot of back and forth with Doepfer and Elektron support to get the stupid module to work. I did but decided to get the CV.OCD box which is portable and easier to use. I now use the cv.ocd as it took me 5 minutes to setup and get working with both my modular systems. I do use the Doepfer moduler to record to my DAW as it has USB that works well with Ableton but other than that it is too obtuse for me to use. I will probably sell mine and get a more useful module for other stuff. I highly recommend the CV.OCD box - cheap, easy to use and no cryptic ancient LED screens. Plus it is small and you can use it with multiple modular systems should you ever buy a new case or expand or want to connect to a friend's modular system.