Gotting HG 71450-A, Manual

Page: 14 / 35

Components and Operation
HG 71450-A
English, Revision 02, Date: 20.01.2015 14
2.2.8 Transponder Programming
You can program Transponders that are placed either in area I or area II but not in the
data-free range (see Figure 2 on page 6) using serial commands structured as shown
in Table 7 on page 14 and Table 8 on page 15.
- In case the transponder is programmed successfully its new code is output
according to the setting of SW4, see Table 3 on page 11.
- In case no transponder was placed in the antenna field or the programming
wasn‘t successful a special response telegram is output structured as shown in
Table 9 on page 15 and Table 10 on page 16. This telegram is output after approx.
2 seconds.
- Baud rate and parity of the characters are set according to the position of the DIP
switches SW1 to SW3, see Table 3 on page 11.
- The check sums are calculated according to the telegram content.
2.2.8.1 Telegram Structure (Host -> Antenna)
1. ASCII telegram with fixed start character, 4 data bytes and a check sum.
Examples of valid ASCII telegrams:
Code 1900: 0x11
h
,0x31
h
,0x39
h
,0x30
h
,0x30
h
,0x36
h

(1
h
+9
h
+0
h
+0
h
+6
h
= *)
Code AFFE: 0x11
h
,0x41
h
,0x46
h
,0x46
h
,0x45
h
,0x41
h

(A
h
+F
h
+F
h
+E
h
+A
h
= *)
*) Only 1 digit is output.
# Character Meaning Type Value range
1 DC1 Start character Unsigned char 0x11
h
2 Code (Hi)
Transponder code to be programmed
Unsigned char
0x30
h
… 0x39
h
,

0x41
h
… 0x46
h
,

0x61
h
… 0x66
h
'0'…'9', 'A'…'F', 'a'…'f'
3 Code Unsigned char
4 Code Unsigned char
5 Code (Lo) Unsigned char
6 Check sum The addition of the characters 2 to 6
makes Unsigned char
Table 7
Content of the telegrams sent by the host (ASCII mode)
0xX0
h
10
h
40
h