Справочник Пользователя для Denso BHT-7000

Скачать
Страница из 175
98
[ 2 ] Control Characters
The control characters are classified into two groups:  transmission control characters
and text control characters.
(1)
Transmission control characters
The transmission control characters listed below are used to compose transmission
control sequences in phases 1 through 3.
Symbol
Value
Meaning
Function
DLE EOT
1004h
End Of Transmission
Releases a data link (Phase 3).
Requests  abort  of  transmission
(Phase 2).
DLE ENQ
1005h
Enquiry
Requests establishment of a data link
(Phase 1).
Prompts the receiver to respond to
the sent text (Phase 2).
DLE ACK
1006h
Acknowledge
Acknowledgment  response  to  DLE
ENQ (Phase 1).
Acknowledgment  response  to  text
(Phase 2).
Acknowledgment  response  to  DLE
EOT (Phase 3).
DLE NAK
1015h
Negative Acknowledge
Negative acknowledgment response
to DLE ENQ (Phase 1).
Negative acknowledgment response
to text (Phase 2).
WACK
103Bh
Wait for Acknowledge
Requests suspension of data recep-
tion  during  erasure  of  the  flash
memory.
  Transparency
The BHT-7000 uses the transparent mode which allows the control characters and
codes  (e.g.,  STX,  ETX,  SOH,  and  DLE)  to  be  transmitted  as  normal  data  in  the
transmission texts.
To transmit a DLE as normal data, type DLE DLE per DLE.