Appendix
Englisch, Revision 14, Date: 07.02.2017
55
E
Mounting next to Massive Metal Structures
Figure 35
Recommended distances to massive metal structures
F
Procedure 3964R
For the computer interconnection between antenna <—> PLC a 3964R-Protocol may
be used. As the antenna outputs data cyclically, this results in some simplifications for
the implementation of the 3964R. The following diagrams describe the procedure.
The following settings need to be observed:
-
Transponder system has lower priority
-
Data transfer is set to 1 start bit, 8 data bit, even parity, 1 stop bit, baud rate
9600 baud (default) or 19200 baud.
F.1
Data direction antenna -> PLC
In this direction the antenna data is transmitted cyclically. A set of data always starts
with an “=“-character (hex 0x3d). The cycle time is parameterizeable and should be
an integer part, or a multiple thereof, of the transponder code´s transmission time. For
this system, the duration for the transponder code transmission is 8 ms. The minimum
cycle duration depends upon the telegram length, therefore on the baud rate and the
selected telegram content.
In the following status diagram
T_ZVZ
stands for the programmable character delay and