Werner Turck GmbH & Co. KG TNQ80 User Manual

Page of 202
BL ident System – Planning
2 – 6
D101583 0207
BL ident
„
The read-write head contacts the data carrier when it is entering 
the transfer zone: This takes about 2.7 ms.
„
With the second contact to the data carrier the read-write head 
recognizes the data carrier. A signal is sent to the interface 
module: Duration about 12 ms.
„
The interface module sends a read-write command, e.g. read 4 
bytes, incl. version and feedback of the data on the interface 
module: Duration about 7 ms.
This results in total to about 22 ms.
Until 4 bytes of data have been processed by the interface module 
takes about 5 ms/byte.
This means when the data carrier passes the read-write head, a 
max. of 8 bytes can be read or written.
Minimum distances between two adjacent data carriers
The minimum distance between two data carriers is dependent on 
the size of the data carrier and the read-write head. 
In dynamic operation (on the fly) the minimum distance is still 
dependent on the data quantity and the bus cycle time.
Note
With the BL ident configurator at www.turck.com different operating 
states in dynamic operation can be simulated and represented.
Note
Corresponding tests for determination of the minimum distance 
should be undertaken before commissioning.