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BIS V-6108 PROFINET
Processor Unit
55
english
Note
As circumstances require, the data must be transmitted over multiple BUS cycles.
Example of a received data frame with 2 EPCs and 12 bytes per EPC
(Illustration without bit headers).:
EPC 1:
E2 FF 00 00 E2 11 90 22 E2 03 01 27
EPC 2:
E2 00 90 51 32 05 01 74 07 80 C5 BE
If the EPCs transfer with the length of 64 bytes, the response in the input buffer is as follows:
Subaddress
Meaning
Description of Function
00
hex
1st Bit Header
01
hex
No. of tags
02
hex
Number of bytes
per EPC
64
This corresponds to the length of the longest transmitted
EPC configured in the device. EPCs shorter than this
length are output right-justified and filled with zeros on
the left.
In the following, the (number of data carriers read) ×
(number of bytes per EPC) are transmitted.
For 64 bytes per EPC, the actual EPC length in ASCII is
specified in the 1st and 2nd byte of the EPC.
03
hex
EPC 1 Length
MSB Length (ASCII)
04
hex
EPC 1 Length
LSB Length (ASCII)
05
hex
EPC 1
EPC data uppermost address
…
…
…
…
EPC 1
EPC data lowermost address
EPC 2 Length
MSB Length (ASCII)
EPC 2 Length
LSB Length (ASCII)
…
EPC 2
EPC data uppermost address
…
…
…
EPC 2
EPC data lowermost address
EPC n Length
MSB Length (ASCII)
EPC n Length
LSB Length (ASCII)
…
…
…
…
EPC n
EPC data uppermost address
…
…
…
EPC n
EPC data lowermost address
Last byte
2nd Bit Header
If the 1st and 2nd bit headers match, the data is valid.
Note
As circumstances require, the data must be transmitted over multiple BUS cycles.
Specific
commands for
BIS VU read/write
heads
7
Device Functions