8AC120.60-1 is dedicated plug-in expansion card for full-range B&R ACOPOS servo drives,installed into drive inner expansion slot. Main function: decode EnDat2.1 absolute encoder signal and sine-wave incremental encoder feedback,built-in real-time encoder fault diagnosis,DSUB9 pin external connector,low power consumption,essential replacement spare when original drive encoder interface damaged or upgrading high-precision closed-loop control