GE Baker Hughes Masoneilan SVI FF Installation And Operation Manual page 178

Parameter (in bold)
Sub-parameter (Index)
DIAGNOSTIC_DATA (70) See
AUTOTUNE (71)
Supply Press
Aggressiveness
178 |
BHGE
Table 31 Transducer Block Parameters (Continued)
Initial
Mode
Range
Value
0 Any
Descrip-
tion
Man
-9 to 9
Description
Should be used by DTM only.
An array that contains the data collected during the diag-
nostic procedure execution.
[0] - Contains the offset in bytes of the data to read from
the beginning of the diagnostic data buffer, This is the only
writable value in the array and may be used to initiate the
read procedure, by writing 0. The value is auto incre-
mented after each read of the array with sub-index 0.
[1] - Skip count - writing 0 to this reads all of the data, writ-
ing 1 reads every other point, writing 2 reads every 3rd
point, etc.
[2] - Number of valid data pairs read. A user program can
read all of the data by making successive reads until this
value is less than 12.
[3] - [26] - Diagnostic data chunk. It contains data pairs
(position/pressure pairs or position/setpoint pairs) as fol-
lows e.g.:
[3]-1st position integer [4] - 1st Pressure integer.
[5]-2nd position integer [6] - 2nd Pressure integer.
Note that the first record of the buffer has some informa-
tion about the results to the procedure, including:
- Procedure being executed.
- Configuration used for the procedure.
- Number of data points.
- Starting and ending position.
- Other parameters specific to the test.
See the UC25 document for details of the headers for vari-
ous tests.
Should be used by method or DTM only.
Writing sets three parameters: Supply Pressure, Aggres-
siveness and Tune Flags and send their values the proces-
sor for updating.
The fourth parameter Completion may take only one of
three values on writing: DO nothing (0), START Autotune(1),
CANCEL Autotune (99). All other values on write are
rejected, and a wrong parameter error is reported.
Reading returns values of the first three parameters
obtained from the processor. The fourth parameter - Com-
pletion, on the read specifies the autotune process com-
pletion code.
Supply Pressure.
Aggressiveness of the Auto Tune procedure:
-9: Relaxed.
0 Normal (Default).
+9: Aggressive.
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