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Appendix
English, Revision 02, Date: 12.07.2011
55
Figure 27
Status diagram procedure 3964R; Antenna —> PLC
B.2
Data direction PLC -> Antenna
In this direction, commands are transmitted only when required (e. g. when the refer-
ence transponder is activated). To overcome the frequent cyclical data output of the
antenna, the 3964R of the antenna has a lower priority.
.
Figure 28
Status diagram procedure 3964R; PLC —> Antenna
Program For Interpreting, Positioning And Decoding
wait
wait for sign
wait for sign
send all signs
Receiving mode
incoming
data
send NAK
send STX
send NAK
receive sign
!=NAK
receive STX
receive DLE
or receive
sign
Cyclical data re
cep
tio
n
(low
priority)
or sign !=
LE or STX)
or
Program For Interpreting, Positioning And Decoding
send NAK
send DLE
send NAK
receive
STX
receive
other
sign
wait for sign
wait
Transfer values &
send DLE
received, but
or BCC oder parity
wrong
received. n=N and
BCC correct
Rece
iving mod
e
(co
m
man
d
mod
e
, rece
ives command
s
if
required