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49
english
Restart the
Processor (Quit)
Programming
Sending the Restart command causes a telegram in process to be aborted and puts the
processor in the ground state. After this telegram is acknowledged, a minimum of 1600 ms
pause should be allowed before starting a new telegram.
Important! The Quit command is not permitted while the processor is waiting for a terminator
(BCC, 'CR' or 'LF CR'). In this situation, the Quit would be incorrectly interpreted as a termina-
tor or datum.
1) The commands Status and/or Quit are not permitted at this point.
2) Instead of block check BCC, depending on protocol variant either Carriage Return 'CR' or LIne Feed with
Carriage Return may be used.
Put the BIS system into the ground state.
The host sends
'Q Q' BCC (51
HEX
)
The BIS processor acknowledges with
'Q Q' BCC (51
HEX
)
Telegram example with
block check (BCC):
Data within angle brackets are control characters.
Values inside apostrophes represent the respective character(s) in ASCII code.
Task
Data Flow
Comm and
Terminator 2)
Acknowledge
Terminator 2)
Restart
(Quit)
from host system to BIS
'Q'
BC C or see
2)
from BIS to host system
'Q'
BC C or see 2)
1)
C-6_0-007-00_836905_E_0704.p65
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english
50
Querying the status
message
Programming Information
The status telegram checks to see what kind of telegram is in process.
Important!
The Status command is not permitted while the processor is waiting for a termina-
tion character (BCC, 'CR' or 'LF CR'). In this situation Status would be misinterpreted as a
termination or data character.
Important:
A status check during a red or write operation on a data carrier (Data carrier Operat-
ing LED on) increases the read or write time. Especially in dynamic mode this can result in
insufficient time for a full read or write while the tag is in the active zone of the read/write head.
Continuous status checking disturbs the processing of the data carrier, and the tag may not be
recognized!
The characters between the apostrophes represent the respective character(s) in ASCII code.
'_' = Space = ASCII 20
HEX
.
1) The Status and/or Quit commands are not permitted at this point.
2) Instead of BCC block check, depending on the protocol variant either Carriage Return 'CR' or Line Feed
with Carriage Return 'LF CR' can be used.
☞
Task
Data Flow
Command
Terminator 2)
Status message
Terminator 2)
Check Status
Message
From host system to BIS
'S'
BCC
or see 2)
From BIS to host system
'S' '_', 'R', 'W',
'L', 'P' or 'H'
BCC
or see 2)
1)
