Balluff BIS U-6127-081-1 4-06-ST36 Betriebsanleitung Seite 287

BIS U-6127-081-1_4-06-ST36
Processor unit
8
007 protocol (continued)
Data block
The data block is transferred with the specified number of
bytes, which is given under d
The length of the individual data fields (Tag 1...Tag n)
corresponds to the requested n
Length Command
element
Number of Data 1
bytes/data
carrier
1 Check byte 1
Number of Optional:
bytes/data Data 2
carrier
1 Optional:
Check byte 2
... ...
If further packets are available, they can be requested via
<STX>, the last transmitted data packet contains the
status <EOT>.
Byte Length Command
element
00 1 Control com-
mand
www.balluff.com
: n .
ata Block umBeR of ByteS
/ .
umBeR of ByteS data caRRieR
Value range
Byte:
00 ...FF
hex hex
00 : Valid
hex
FF : Invalid
hex
Byte:
00 ...FF
hex hex
00 : Valid
hex
FF : Invalid
hex
...
Value range
<STX>
Command identifier '>': Read data carrier, bulk
extended
Read out several data carriers that are located in the
detection range of the specified antenna. With the
, either all data carriers in the detection
caRRieR Selection
range can be read out or only a subset previously selected
with the Select command.
The memory area to be read is specified via
and
numBeR of ByteS memoRy Bank
The requested data is transmitted together with the EPC of
the data carrier in order to be able to allocate the data.
Depending on the amount of data, the data is transmitted
in fragmented form in one or more packets, which can be
requested iteratively by the processor unit. The following
boundary conditions apply:
Maximum amount of data: 999999 bytes/data carrier
Maximum number of data carriers: 999
Initially, the command reports only the number of data
carriers that have been detected. Then the requested data
is read out and transmitted in fragmented form in one or
more packets.
If detected data carriers are removed from the detection
range of the antenna before being read out or if they
cannot be read out successfully, the data are marked as
invalid by a check byte.
Byte Length Command
element
00 1 Command
identifier (ASCII)
01 1 Antenna number
(ASCII)
02...07 6 Start address
(ASCII)
08...13 6 Number of bytes/
data carrier
(ASCII)
14 1 Data carrier
selection
15...17 3 Max. number of
data carriers
(ASCII)
18 1 Memory bank
(ASCII)
19 1 BCC
data
,
StaRt addReSS
.
Value range
'I'
'0': All active
antennas
'1'...'4': Single
antenna
"000000"...
"999999"
"000001"...
"999999"
'0': All
'1': Selected
"000"..."999"
'R': Reserved
'E': EPC
'T': TID
'U': USER
00 ...FF
hex hex
english 111