How do you access the Advantys STB Interbus NIM's diagnostic registers?

Issue
How do you access the Advantys STB Interbus NIM's diagnostic registers?

Product Line
Advantis STB

Resolution
This information is obtained by writing to the Command Word (1st output word of IO image) and then reading the Status Word back (1st input word of IO image). Refer to the STBNIB2212 user guide for details of status bytes.