Commissioning
Real-time Ethernet port multiplier 55
Version: 2.6
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 variablesare available for
this purpose under the network variable. The Quality variable provides a counter with a resolution of 100µs.
The counter value indicates the variable delay. The example below shows the online value of Quality when
the network connector is unplugged (counter increases) and reconnected (counter value 0).
Fig.76: Online value of Quality after unplugging and reconnecting of the network connector.
In addition to the Quality variables, the CycleIndex variable is incremented in each Publisher cycle.
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General