CitectSCADA has a DATATAKR driver to
communicate to Datataker (DT) data logger devices through serial
communication. The X scan schedule must be configured on the device
and is used by the Citect driver to obtain data. This driver has
been functionally tested with Datataker Data Loggers series 50, 500
& 600 and implements the DARTS protocol. The DART protocol is a
proprietary protocol developed by Data Electronics to ensure
reliable communications over links that are susceptible to error.
The protocol uses numbered packets with an ACK / NAK response and a
16 bit checksum to ensure reliable transmission of data.
The DATATAKR driver cannot be used to communicate with DT devices
over Ethernet due to its DARTS implementation. The DT device may
have an inbuilt Ethernet interface, e.g. DT800, or is using the
RS232-to-Ethernet converter accessory. In this case you will need
to use the DeLogger OPC server for CitectSCADA to communicate to
the device. DeLogger is freely available from DataTaker’s web site
(http://www.datataker.com).
After installing DeLogger you must run the
“OPC_DA20_Components.exe” application located in the ..\DeLogger
\opcserver folder. This will activate the OPC server so that it
will run once a connection has been established to a device within
DeLogger. CitectSCADA can then connect to this OPC server through
its OPC client driver and communicate to the device. As a further
option to this, the DeLogger Pro is also available but must be
purchased. This allows the user to customise the OPC tag
names.
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