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Manual
ibaW-750
54
Issue 1.1
11
K-bus notes
11.1
Cycle time of the K-bus
The K-bus of the ibaW-750 device is asynchronous, i.e. independent from the ibaNet-E
sampling rate and the adjusted time base in ibaPDA.
The cycle time on the K-bus depends on the number and type of the connected terminals
and may vary. Different terminals have different influence on the K-bus: digital have low
influence, analog terminals have more and complex terminals the most influence.
The current cycle time on the K-bus is measured with each cycle and is displayed on the
Diagnostics tab in the “Current cycle time” field.
Please note that the K-bus cycle time of the ibaW-750 can be only 1 ms (1000 µs) mini-
mum, due to the system.
Unfortunately, the cycle time cannot be calculated in advance in ibaW-750.
The actual K-bus cycle time can be seen in ibaPDA only after initial operation.
Here are some examples with measured cycle times:
Digital terminals
1 x 2-channel digital input terminal WAGO750-405
2 x 2-channel digital input terminal WAGO750-405
1 x 2-channel digital output terminal WAGO750-502