Device Description HG G-71912-A | English, Revision 03 | Date: 28.03.2018
20
Chapter 5 – Components and Operation
Note
Error
0002
may also occur during ordinary transponder crossings, if the code transmission
is aborted due to decreasing power output level.
5.3.2.1.2 List Of System Commands
A Command telegram always consists of four bytes, including the command itself, its pa-
rameters and at last the check sum (XOR relation of all bytes with starting sign). When
choosing the procedure "transparent" (see also appendix, see page C on page 49) also a
start sign has to be sent.
Four commands are defined:
Note
No. 1:
The monitor mode should not be used in normal mode (for example from a PLC) as
the following data output will not be realized in transparent or 3964R mode. It is suited for
the VT52 terminal, which can be used to alter parameters.
Note
No. 4:
The comparative values (sum and difference voltage) are saved automatically in the
parameter E²PROM. This command should only be proceeded once during commissioning,
as otherwise changes in the exactness of the antenna may not be noticed as at every setup
of the reference transponder test the reference values are considered!
No. Meaning
Procedure
Start
sign
Command byte Parameter
Check
sum
1
Switch to monitor mode
(described in 6.2 „Sys-
tem Monitor“ on page
31)
3964R
HEX
4D
16
4F
16
4E
16
49
16
ASCII
M
ONI
transpar-
ent
HEX
3D
16
4D
16
4F
16
4E
16
49
16
38
16
ASCII =
M
ONI
8
2
Programming the code
ttttt
x
= reserved for future
applications, at the
moment variable
3964R
HEX
50
16
Code in the Form
x
t
16
tt
16
tt
16
For the Code
"12345" e.g.
01
16
23
16
45
16
transpar-
ent
HEX
3D
16
50
16
0A
16
3
Start reference tran-
sponder test
3964R
HEX
52
16
54
16
31
16
31
16
ASCII
R
T11
transpar-
ent
HEX
3D
16
52
16
54
16
31
16
31
16
3B
16
ASCII =
R
T11
;
4
start reference tran-
sponder test (see also
NOTE!)
3964R
HEX
52
16
54
16
53
16
53
16
ASCII
R
TSS
transpar-
ent
HEX
3D
16
52
16
54
16
53
16
53
16
3B
16
ASCII =
R
TSS
;
Table 8
List of system commands
