OG_MU-4-434_v10e Circuit Design, Inc.
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OPERATION GUIDE
Chapter 8 Transparent mode
The MU-4 has a transparent mode in which users can use their own communication protocol as it is.
For data transmission and reception in the transparent mode, use the DI (DATA-IN) and DO (DATA-OUT)
terminals.
To set the transparent mode and perform transmission and reception, issue the ’@TR’ command.
When using the transparent mode, it is recommended the user fix the transparent mode in the EEPROM with
the ‘/W’ option when turning the power on and use the MU-4 in the transparent mode only.
For details of the ‘/W’ option, refer to ‘5.3
Save Setting Command Options’.
8.1
Transparent mode setting
To set the transparent mode, issue the ’@TR’ command as follows:
The basic command and response formats are the same as that for the control commands and control responses.
For details, refer to ‘5.4.2
Control commands and control responses’.
Default:
OF (Transparent mode is Off)
Value:
OF = Transparent mode is Off
ON = Transparent mode is On
Example Set the transparent mode
Control command:
@TR ON
C
R
L
F
Control response:
＊
TR
=ON
C
R
L
F
Example Set the transparent mode to Off
Control command:
@TR OF
C
R
L
F
Control response:
＊
TR
=
OF
C
R
L
F
8.2
Data transmission and reception
To transmit/receive data in the transparent mode, issue the ’@TR’ command as follows:
The basic command and response formats are the same as that for the control commands and control responses.
For details, refer to ‘5.4.2
Control commands and control responses’.
Default:
RX (Reception)
Value:
RX = Set to Reception
TX = Set to Transmission
Example Transmit the data input at the DI terminal
Control command:
@TR TX
C
R
L
F
Control response:
＊
TR
=
TX
C
R
L
F
* Ensure that the transparent mode is on with @TR ON
（
@TR ON/W
）
before transmission.
Example
Receive the data transmitted in the transparent mode at the DO terminal
Control command:
@TR RX
C
R
L
F
Control response:
＊
TR
=
RX
C
R
L
F
* Ensure that the transparent mode is on with @TR ON
（
@TR ON/W
）
before reception.
