The error codes reported as CANopen Emergency can also be read out via object 603Fh.0h (Last) Error Code . For example, you can enter it via the web interface in the Parameters area:
RefGo Command OR603F,0,h
However, the displayed return value is always decimal and you may have to convert the value to hexadecimal using the (Windows) calculator, e.g.
RefGo Response OR603F,0,3221h --> Error according to table in CANopen Emergency -> 3221h = undervoltage UZK power supply motor
The last four error codes can be displayed via the objects 1003h.1h-4h Standard error field , e.g.
RefGo Command OR1003,1
RefGo Response OR1003,1,3221h