How to read enumerated values from an OPC server via Datasocket
Hi Labviewers,
I am using LV8.2 and I am trying to find if it is possible to read enumerations from an OPC server via Datasocket, not just the values.
I can successfully read a value for an OPC server via Datasocket and I get a value for example 3, is it possible to get the enumeration/string that corresponds to this value i.e. "Open".
Many thanks in advance
Dimitris
Hi Sarah,
With the input type as variant I get the following response:
1 <-This is the current numeric value of the parameter
4 Attribute(s):
'Quality' -> 192
'TimeHigh' -> 29861723
'TimeLow' -> -665408304
'Timestamp' -> 39.238E+3
With the Input set to Enum constant I get no values or strings coming back. With the Input set to Ring constant I just get the numeric value
Dimitris
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Please help me with extracting each alue from the parm '(25,23,35,1)' for the above purpose. Thank You.chris227 wrote:
I would propose the usage of regexp for readibiliy purposes and only in the case if this doesnt perform well, look at solutions using substr etc.
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t2.att_type= to_number(regexp_substr( '(25,23,35,1)', '\d+', 1, 1))Edited by: chris227 on 01.03.2013 08:00Sir,
I am using oracle 10g.
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23 is at 2
35 is at 3
1 is at 4.
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BEGIN
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SELECT length(V_CNT) - length(replace(V_CNT,',','')) FROM+ ----> the compiler gives an error for this select query : PLS-00428:
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