Beckhoff EL6601 Documentation page 103

Commissioning
Fig. 123: Created in/outputs of the inserted variables
The FrameState input and the FrameCtrl output underneath the box give information about the current status
or control of the received Ethernet Frames. FrameState and FrameCtrl are reserved and are currently not
supported.
The VarState input and the VarCtrl output under the network variable indicate the current status (or control)
of the received network variable. VarState and VarCtrl are reserved and are currently not supported.
Quality of the network variables
The quality of a network variable is assessed on the Subscriber side. Two input variables are available for
this purpose under the network variable. The Quality variable provides a counter with a resolution of 100 µs.
The counter value indicates the variable delay. The sample below shows the online value of Quality when
the network connector is unplugged (counter increases) and reconnected (counter value 0).
EL6601, EL6614 Version: 4.2 103