User's Manual

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 .