OPC Data Specification from MicroSCADA using Property Transfer
I am currently on site in Kazakhstan and am trying to get some signals from a MicroSCADA into my 800xA system (PM861, 5.1 FP4 RU2). The signals are being supplied over OPC and I am bringing them into my controller using Property Transfer.
The signals are available on the Control Structure under the generic 800xA OPC Server but when I try to connect using the Property Transfer aspect whatever I put in gets rejected as INVALID. I have installed a Matrikon client on my machine, this reads the signals without any problems.
The signal format as reported in the Control Structure is something like
$'[Control Structure]Root/MicroSCADA:\P\SiteDOCPMU_ME1\16' where MicroSCADA is the name of the OPC Server in the Control Structure and \P\SiteDOCPMU_ME1\16 is the name of the signal.
Anybody have any ideas? I have got this working with a different syntax on my development Virtual Machine but if I set up an alias with a similar format to this one nothing works.
The signals are available on the Control Structure under the generic 800xA OPC Server but when I try to connect using the Property Transfer aspect whatever I put in gets rejected as INVALID. I have installed a Matrikon client on my machine, this reads the signals without any problems.
The signal format as reported in the Control Structure is something like
$'[Control Structure]Root/MicroSCADA:\P\SiteDOCPMU_ME1\16' where MicroSCADA is the name of the OPC Server in the Control Structure and \P\SiteDOCPMU_ME1\16 is the name of the signal.
Anybody have any ideas? I have got this working with a different syntax on my development Virtual Machine but if I set up an alias with a similar format to this one nothing works.
Voted best answer
I assume the colon (:) and backslashes (\) disturbs the expression parsing.
Try preceeding each with an extra backslash.
$'[Control Structure]Root/MicroSCADA\:\\P\\SiteDOCPMU_ME1\\16'
It is also recommended to specify the aspect name to read from;
PATHTOOBJECT:ASPECT:PROPERTY
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