Werbung
Diagnosis Management
In addition to the Profibus six byte standard diagnostic, the interface
provides both user diagnostic and static diagnostics functions.
Standard diagnostic
The standard diagnostic management is fully compliant with the
Profibus specification.
User diagnostic
The first byte in the user diagnostic area reflects the controller serial
link status with following meaning:
Bit 0:
Bit 2:
So, if the low nibble in the first byte is equal to 0, the interface is
working properly. Otherwise there is a problem.
During the start-up phase after one interface power on or controller
power on, the first byte can assume values different from zero for few
seconds.
Agilent 4UHV Ion Pump Controller User Manual
controller doesn't respond
first loop of requests not ended (values in the input
data are not fully coherent yet)
/
87-900-137-01 (D)
Technical Information
PROFIBUS
103/114
5
Werbung
Kapitel
