Parameter server

 

In order to be able to use the functionality of the parameter server, both the IO-Link master and the IO-Link device must be specified to V1.1. The IO-Link revision of the device can be read for the individual port under Settings. The Beckhoff IO-Link master supports specification V1.1 from FW 07.

  • The parameter server in the IO-Link master contains parameter data that are saved in the IO-Link device. The memory capacity is max. 2 kbyte (including header).
    If the IO-Link-Device is exchanged, then the data are loaded from the parameter server into the new device. The requirement for this is that the device is of the same type (VendorID & DeviceID must be the same).
  • If a new IO-Link-Device is configured, then the IO-Link master loads the parameters from the IO-Link-Device into the parameter server when starting for the first time.
    Data from other IO-Link devices that are already configured (VendorID & DeviceID do not correspond to the configured device) are overwritten.
  • At each further start the IO-Link master uses a checksum to check whether the data in the parameter server correspond to those on the IO-Link-Device and if necessary downloads them to the device.
  • If the parameters change during the device runtime, this can be reported via the Master's special event. The master then starts the parameter server with an upload.
  • By default the event is not set each time the parameters are written, therefore the end of the parameterization procedure has to be reported to the IO-Link device.
    The IO-Link-Device then sends the corresponding event to the master. The data are loaded into the parameter server.
  • In the case of a pre-programmed IO-Link-Device, no download takes place from the parameter server to the device.