Applies To:
  • CitectSCADA
Summary:
OPC Array syntax doesn't work with Automation Solutions AES OPC server.

The Automation Solutions OPC server uses array syntax as follows: [device]yyyyyy[elements] (where yyyyyy is a Modbus register number). An alternative syntax is: device.yyyyyy[elements].
 

Solution:
The correct syntax for defining array variables within Citect is path+tagname!A[arraysize]

In the case of the AES OPC server, the path+tagname syntax is device.yyyyyy[elements], making the correct definition within Citect:
device.yyyyyy[elements]!A[arraysize]
 
Keywords:
 

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