Detect Data Carriers - Balluff BIS U-6127-081-1 4-06-ST36 Betriebsanleitung

BIS U-6127-081-1_4-06-ST36
Processor unit
8
007 protocol (continued)
8.8

Detect data carriers

Command identifier 'N': Number of data carriers
Detects the data carriers that are within the detection
range of the specified antenna and returns the number of
detected data carriers. With the data carrier selection,
either all or only selected data carriers can be detected
(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 Data carrier
selection
03 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, data follows.
Byte Length Command
element
00 1 Status
01 1 Antenna number
(ASCII)
02...04 3 Number of data
carriers found
(ASCII)
05 1 BCC
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If the data cannot be provided, a negative status message
follows.
Byte
00
01
Value range
'N'
'0': All active
antennas
'1'...'4': Single
antenna
'A': All
'S': Selected
00 ...FF
hex hex
Value range
<ACK> or
<NAK>
See table Status
codes on
page 94
Value range
<STX>
Value range
<ACK>
'1'...'4'
"000"..."999"
00 ...FF
hex hex
Length Command
element
1 Status
1 Status code
english
Value range
<NAK>
See table Status
codes on page
94
99