User's Manual

48
Device Function
10
Updating the IO-
Link Master data
When a data carrier enters the read range, its data are read and stored within time t1. The data
are sent at the next start of a process data cycle (In-Data).
The data carrier should be located within the read range at the start of a process data cycle so
that the CP bit is set when the current data are polled. If the data carrier leaves the read range
before polling, the data are sent but the CP bit is not set. If the dwell time of a data carrier in the
read range is very short and if another data carrier immediately arrives, loss of data may result in
the worst case.
The minimum time until the most current data are available on the IO-Link Master is 16×t3. The
time corresponds to the sending time of 16 frames or one process data cycle with the param-
eterized cycle time (depending on the set baud rate and the host Master,
see also “Direct
Parameter Page” on page 3
0
).
BIS L-409 IO-Link Device
Processor