We are lookin for a person, who can do the following job:
Labview (Windows 7) connect with S7-SPS and extracting Data
The Projekt is about the connection and data-transfer between a measurment-system running with LabView under Windows 7 and an Siemens SPS S7 (S-400).
The connection between the Labview/Windos7-System and the SPS S7 (S-400) must be established. Data from the S7-SPS must transfered into the Labview-System, so that these data are ready to be used in ongoing operations in the Labview system (eg. available in Labview). A data-logging for this data is an option.
The frequency of this data readout is low (about one time every 1-10 seconds, typically 5 seconds).
The number of data is relatively small (about 20 data, maximum 100 data).
Connecting the measurment-Labview-System to the Siemens SPS must not require any changing in the setup of the SPS (eg projecting), because the SPS-process (a running production machine) must not to be stopped.
The connection between the Labview/Windos7-System and the SPS S7 (S-400) has to be closed on request of the user.
The means doing the above connection and readout is free, but we will prefer to do this direct (eg. without using an OPC server). Maybe Comdrv S7, libnodave, etc. is an option.