Hello, after a struggle I found it (pretty close) to work with a iocard.exe
My inputs are 61 and 62 for encoder.
In iocardconfig I have :
Var:
FS_QNH/$0330/2/QN1/1013
Swr-encoders:
Efis-Baro_neg/61/FS_QNH/1/1/2
Efis-Baro_pos/62/FS_QNH/1/1/2
Def.functions:
QN1/10840/10840/1/0/16
Hope this helps somebody