Operating Manual HG G-98830YA | English, Revision 02 | Date: 21.06.2021
87
Appendix – Chapter 16
Figure 41
Typical accuracy of the deviation calculation in Y direction (transverse to the direction
of travel) with Transponder HW DEV00095
16.2 Procedure 3964R
For the connection antenna <–> PLC you can use the 3964R protocol. Since the data
output from the antenna is cyclic, there are some simplifications when implement
-
ing the 3964R procedure. In the following the procedure is described by state dia
-
grams.
You must observe the following settings for data transmission:
Transponder system has low priority
The data transmission has the setting 1 start bit, 8 data bits, parity even, 1 stop
bit, baud rate 38400 baud (default) or 19200 baud.
16.2.1 Data Direction Antenna –> PLC
Antenna data are transmitted cyclically from the antenna to the PLC. The data record
always starts with an "=" character (hex 0x3d). The cycle time can be parameterized,
it must last an integer part - or a multiple of it - of the transponder code transmission.
In this system the transponder code transmission time is 8 ms. The minimum cycle
time results from the telegram duration and thus depends on the baud rate and the
selected telegram content.
Meaning in the state diagrams:
T_ZVZ
stands for the programmable character delay time and
T_QVZ
for the programmable acknowledgement delay time.
-25
-20
-15
-10
-5
0
5
10
15
20
25
-130
-110
-90
-70
-50
-30
-10
10
30
50
70
90
110
130
Antenna HG G-98830 Y axis: with Transponder HW DEV00095
A
bs
olu
te
E
rr
or
Y
[m
m
]
Distance: 40 mm
Distance: 50 mm
Distance: 60 mm
Y [mm]
