Annex
English, Revision 09, Date: 13.12.2016
51
9
Annex
A
Procedure 3964R
For the computer interconnection between antenna <—> SPS a 3964R-Protocol may be
used. As the antenna outputs data cyclical, this results in some simplifications during
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, parity even, 1 stop bit, baud rate
38400 Bd (default) or 19200 Bd.
A.1
Data direction Antenna -> PLC
In this direction the antenna data is transmitted cyclically. The data sentence always
starts with an „=“-character (hex 0x3d). The cycle time is parameterizeable and should
take a complete part, or multiple thereof, of the transponder code‘s transmission line.
In the present system, the duration for the transponder code transmission is 32 ms.
The minimum cycle duration depends upon the telegram length, the baud rate and the
chosen telegram content.
In the diagram
T_ZVZ
stands for the programmable character delay time and
T_QVZ
for the programmable acknowledgement delay time.
Figure 23
Diagram procedure 3964R; antenna —> PLC
