16
3.3
Headerless stream Mode
3.3.1 Operation in the headerless stream mode
The
headerless stream mode
is a specific transmission mode to set transmission data
without the
packet header
, employing the protocol of the
packet transmission mode
.
Parameters such as
receiver
or
repeater addresses
are set either by the
memory
register
or by the command. A transmission data packet is automatically terminated by the
specific character (
terminator
).
Command responses
(P1, P0) are not output.
In the
headerless stream mode
, since the transmission data is no longer to be issued as
the transmission command. At the end to end of the wired link, existing upper layer
application protocol can be used without awareness of the wireless link protocol.
This mode can communicate with the normal
packet transmission mode
interactively.
This mode cannot be used in the
RS485 mode
.
3.3.1.1 Format of the headerless stream mode
In the
headerless stream mode
, no
response
(P1, P0) following the transmission
command is output. Instead of outputting the
receive header
or the CR/LF code, the
specific characters (
terminator
) is output which separates data to a transmission packet at
the sender end.
Since the transmission packet contains the sender’s address, data format (
text or binary
mode
) and the
repeater address
, the
headerless stream mode
is compatible with the
normal
packet transmission mode
and the interactive communication can be performed
between them.
The transmission and receiving formats in the
headerless stream mode
are as follows.
1.
Packet transmission mode
(for the reference below)
Sender: @TXT002HELLO
CR/LF
-> Receiver: RXT001HELLO
CR/LF
2.
Headerless stream mode
(when
terminator
is
CR/LF
)
Sender: @HELLO
CR/LF
-> Receiver: HELLO
CR/LF
3. When the receiver is in the
packet transmission mode
(text mode)
Sender: @HELLO
CR/LF
-> Receiver: RXT001HELLO
CR/LF
4. When the receiver is in the
packet transmission mode
(binary mode)
Sender: @HELLO
CR/LF
-> Receiver: RBN001HELLO
CR/LF CR/LF
5. When sender is in the
packet transmission mode
Sender: @TXT002HELLO
CR/LF
-> Receiver: HELLO
When the receiver is in the
packet transmission mode
, be careful
about the terminator. For details, refer to
REG23
of p.27
M
EMORY
R
EGISTER
D
ESCRIPTION
.
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