Saeco Office Royal + NRI validator teach mode

[artifexor]

I have a Saeco Office Royal Silver and an NRI coin validator. I would like to teach a new coin (HUF) but no success. I tried G13 manuals and found that G13 have two DIL switches with eight switch on both DIL but mine is an eight (S1) and a six (S2) switches version. I did not found any manual of this kind of coin validator. Probably is not a G13 validator. S1 is used for coin channel enable/disable which works well but I have no idea how S2 and teach mode is working. Please help where should I find any information on this validator. If more information need let me know.