Balluff BIS U-6127-081-1 4-06-ST36 Betriebsanleitung Seite 285

BIS U-6127-081-1_4-06-ST36
Processor unit
8
007 protocol (continued)
Command identifier 'y': Read data carrier, TID
Reads the TID of a data carrier that is located in the
detection range of the specified antenna. The length of the
read TID data is specified via parameter 0004
length on page 61).
If there are several data carriers in the detection range of
the specified antenna, the desired data carrier must be
selected before reading (see Command identifier 'z': Select
data carrier (Select) on page 105).
Byte Length Command
element
00 1 Command
identifier (ASCII)
01 1 Antenna number
(ASCII)
02 1 BCC
Status message
Byte Length Command
element
00 1 Status
01 1 Status code
If the status message is positive, data is requested with
<STX>
Byte Length Command
element
00 1 Control com-
mand
If the command is executed successfully, the requested
data follows
Byte Length Command
element
00 1 Status
01 1 Antenna number
(ASCII) (0 = all
active antennas)
02...03 2 Number of bytes
(ASCII)
04 No. of TID data
bytes (LSB...MSB
Last 1 BCC
byte
1) LSB...MSB sequence means a reversed sequence compared to the
arrangement in the memory of the data carrier.
www.balluff.com
(see TID
hex
Value range
'y'
'0': All active
antennas
'1'...'4': Single
antenna
00 ...FF
hex hex
Value range
<ACK> or
<NAK>
See table Status
codes on page
94
Value range
<STX>
Value range
<ACK>
'0'...'4'
"00"..."99"
Byte:
) 00 ...FF
1)
hex hex
00 ...FF
hex hex
If the data cannot be provided, a negative status message
follows
Byte Length Command
element
00 1 Status
01 1 Status code
Value range
<NAK>
See table Status
codes on page
94
english 109