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Rittmeyer WSR3000 Communication Driver

Rittmeyer WSR3000 Communication Driver is intended for data connection between Reliance's runtime software and the Rittmeyer WSR3000 devices connected via the WSK150 communication unit.


These are the driver's main benefits:


  • faster communication thanks to optimization of communication packets
  • using spontaneous reports for reading data of a device
  • option to choose either the warm or cold start of the driver
  • improved diagnostics thanks to communication packet visual display


Communication with a PLC runs in one of the following ways:


  • RS-232 serial link
  • RS-485/422 serial link


Starting up the driver

The communication driver is a DLL loaded into memory by the Reliance 4 Driver Server program, which can be launched either as a Windows service at Windows startup or as a standard application at the start of a visualization project. Information required to make a connection with devices is read from the visualization project. Communication to the devices is optimized at the start of the visualization with respect not to overload the communication lines.



Reading data

The device's data is read based on the so-called “Spontaneous Reports”. At startup, the driver establishes a connection with individual data points in the devices. The devices then send current data only in case the tag value changes.
The so-called “Forced Update Interval” can be configured for each tag. If the tag value stays the same at a specified interval, the driver sends a request for a data update which is independent of the spontaneous reports.



Detecting the loss of connection with the device

The loss of connection is detected if the communication driver doesn’t receive a valid response Nx consecutively (N represents the maximum number of failed communications). This parameter can be adjusted.


For information about the price, please contact your local distributor.


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