Dataforth’s Open Platform Communications (OPC Server) is designed for use with the MA 20 Industrial Data Acquisition & Control System to ensure data collection and analysis chores are significantly broader-based and easier to use. The MAQ20 OPC Server provides a common interface to the MAQ20 system that is usable by any SCADA, HMI, or other custom software that is an OPC client. It employs Kepware Technologies’ KEPServerEX OPC Server and Modbus TCP driver that are configured for the MAQ20 system. OPC servers consist of three basic parts: Channels, Devices, and Tags. A channel represents the communication medium from the host computer to one or more devices. A device is the hardware with which the server communicates. The device driver provides the interface to the data acquisition hardware. For the MAQ20 OPC server, the MAQ20 Data Acquisition System is the device. A tag represents addresses within the hardware with which the server communicates. The KEPServerEX OPC Server allows both Dynamic tags and user-defined Static tags. Dynamic tags are entered in the OPC client and specify device data. User-defined Static tags are created in the server and support tag scaling. When the MAQ20 system is used as the device, tags are assigned to the addresses within the MAQ20 I/O modules and communications modules from which data is read and to which data is written. For additional details, download the MAQ20 OPC Server user manual at http://www.dataforth.com/maq20_download.aspx
Dataforth Corp.
Tucson, AZ
800-444-7644
520-741-1404
[email protected]
http://www.dataforth.com
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