Gotting HG 71451-A, Manual

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Components and Operation
HG 71451-A
English, Revision 03, Date: 07.02.2012 12
3. Read antenna with 3 input bytes (Table 9) and transponder programming with 3
output bytes (table 17)
The output bytes have to be applied according to the following table:
Status and Instruction Bits
Byte # Length Type Sequence Significance
1 2 Byte unsigned int Lo Byte read Transponder
code
2 Hi Byte
3 1 Byte unsigned char status (according to
Table 11 below)
Table 9
Structure of the 3 Profibus Input Bytes
Byte # Length Type Sequence Significance
1 2 Byte unsigned int Lo Byte Transponder code
that has to be pro-
grammed
2 Hi Byte
3 1 Byte unsigned char Instruction bit
(according to Table
12 below)
Table 10
Structure of the 3 Profibus Input Bytes
Priority Name Significance Comment
0x01 Currently not allocated By means of status bit DATA
and CD can be determined, if a
transponder is located below the
antenna. If both bits are set,
transponder data will be
received at a sufficient level.The
bits are not set within the blank-
ing interval. At an unpro-
grammed transponder or on
occurrence of an interference
field the CD bit will be set only.
0x02 CLR Reflects the status of the CLR- instruction
(see Table 12 on page 13)
0x04
0x08
0x10 Currently not allocated
0x20 DATA Will be set according to the data LED
0x40 CD Will be set according to the CD LED
0x80 POS Will be set according to the Pos LED
Table 11
Significance of the status byte