We do not offer a MIDI interface for Juno-6/60/106 or Poly 61. These devices are kind of "hermaphrodites": they use analog sound processing (VCF, VCA), but digitally controlled oscillators (i.e. DCOs , no VCOs). Consequently they cannot be controlled by Midi-to-CV interfaces. The Juno 60 features a so-called DCB-Interface.

Roland offered a Midi-to-DCB interface called MD-8 that enabled to control the Juno 60 via Midi. Maybe you can find this interface second hand as it is no longer manufactured.