Agilent Technologies Turbo-V 81-AG Notice De Mode D'emploi page 292

17 Technical Information
Profibus Option
Diagnostic Management
In addition to the ProfiBus six byte standard diagnostic, the interface
provides both user diagnostic and static diagnostics functions
The standard diagnostic management is fully compliant with the
ProfiBus specification.
During the start-up phase after power on, the first byte in the user
diagnostic area, can assume values different from zero.
This byte has the following meaning:



So, if the first byte is equal to 0, the interface is working properly,
otherwise there is a problem.
Each nibble in the bytes following the interface status byte represents
the status of the last attempt to write a parameter with following
coding (diag status byte):
0
1
2
3
4
5
6
F
292/306
Bit 0 = 1: controller not responds (RS485 link broken)
Bit 1 = 1: controller not identified (not compatible with the
ProfiBus gateway)
Bit 2 = 1: first loop of requests not ended (values in the input data
are not fully coherent yet)
Write success
Controller response was "NACK"
Controller response was "Unknown window"
Controller response was "Bad Data Type"
Controller response was "Over range"
Controller response was "Bad operation"
Controller response was an unknown response
Parameter not supported by the controller
Turbo-V 81-AG Rack Controller User Manual / 87-900-986-01 (I)