Components and Operation
Englisch, Revision 14, Date: 07.02.2017
26
4.2.6.5.2
Output Bytes
Output bytes are to be used according to the following table:
Depending on the configuration of the master using the suitable GSD file (refer to Ap-
pendix, section H on page 57) the corresponding number of output bytes is transmit-
ted. Values 1 and 5 are the options for the number of output bytes (refer to Table 16).
The instruction byte is defined as follows:
Programming will be initiated by a rising edge of the PROG bit; i.e. first the transponder
code which has to be programmed with PROG=0 should be transferred, subsequently
the same transponder code wit PROG=2. Thus the released programming process
lasts approx. 100 ms. Afterwards the new code will be read directly and is available
for the input bytes.
4.2.7
Software download
If necessary, the antennas may be updated via the serial interface. Please refer to
chapter 5.3 „Software Update (Antenna Software)“ on page 39.
Number
Input Bytes
Byte #
Length
Type
Byte Sequence
Description
1
1
1 Byte
Unsigned char
Instruction byte
5
2
4 Byte
Unsigned long
HiByte
Transponder code to be pro-
grammed
3
4
5
LoByte
Table 16
Profibus Output Bytes
Priority
Name
Significance
0x01
SETREF
Switching the Reference Transponder ON/OFF
0x02
PROG
Transponder programming
0x04
0x08
0x10
0x20
0x40
0x80
Currently not allocated
Table 17
Significance of the instruction bit
