Hach-Lange ORBISPHERE 6110 OPC Instruction Manual - Manual (Page 7)

Note: If communications problems are encountered between the OPC client and server it may be necessary to
adjust the DCOM and/or Firewall configurations. Information on these can be found on the internet or from your
OPC client software supplier.
8. Click on the DA Browse tab to display the data available.
Refer to the documentation for the OPC client software installed for details on accessing the data
available.
OPC items
The OPC protocol identifies the data passed between server and client with a three level hierarchy
called an item. The item may contain data, error messages, warning messages, etc.
To ensure total synchronization between PC and instrument, all modifications that are made to data
elements on the instrument are automatically sent to the client PC as a message item.
The following data items are sent in read-only format from the instrument to the OPC client, and
represent data from the 6110 instrument:
• Package - Data about the package currently selected by the instrument
• Measurement - Data about the last measurement made by the instrument
• Calibration - Data about the current calibration parameters being used by the instrument
Note: No historical data is available from the instrument.
Message items can be sent from the instrument to the OPC client ("Message Out" items) and from
the OPC client to the instrument ("Message In" items).
English 5