Roland VR-400UHD Remote Control Manual page 2

LAN/RS-232 Command Reference
The VR-400UHD support two types of remote-interface communication: LAN and RS-232.
Using the LAN port or RS-232 connector to send specific commands to the VR-400UHD from a controlling device lets you operate the VR-400UHD
remotely.
LAN Interface
This uses the LAN port on the VR-400UHD.
You use Telnet to operate the VR-400UHD remotely over a LAN (TCP/IP
protocol).
Communication standards
Port LAN port
TCP port number
8023
For methods of connecting to a network, refer to "Reference Manual"
(PDF).
RS-232 Interface
RS-232 connector pin layout
1 2 3 4 5
6 7 8 9
DB-9 type (male)
Communication standards
Communication method Synchronous (asynchronous), full-duplex
Communication speed
9,600/38,400 bps
Parity none
Data length
8 bits
Stop bit 1 bit
Code set ASCII
Cable wiring diagram
Use an RS-232 crossover cable to connect the VR-400UHD and the
controller (an RS-232-compatible computer or other device).
VR-400UHD
N.C.: 1
RXD: 2
TXD: 3
DTR: 4
GND: 5
DSR: 6
RTS: 7
CTS: 8
N.C.: 9
(Crossover connection)
* The connections between 4 and 6 and between 7 and 8 are inside the
VR-400UHD.
2
Pin assignments
Pin No. Signal
1
N.C.
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 N.C.
Control device
1:
2: RXD
3: TXD
4:
5: GND
6:
7:
8:
9:
Command Format
Commands are common to the LAN and the RS-232 interface.
Transmitted commands (control device Ó this unit)
Transmit specific commands from the control device to this unit.
Command Format
Obtains the model name and version information.
ver
ver lf
Sets a parameter.
set
set , Category
Obtains the current parameter value.
get , Category
get
When this unit correctly receives a command, it returns
set,[category],[ID],[sub-ID],[value][lf ].
* "lf" is the ASCII code "0aH", and is a control code that indicates the
end of the command. H indicates a hexadecimal value.
ack response (this unit Ó control device)
When this unit correctly receives a command, it returns ack.
The ack response commands are described in
"List of Commands" (p. 3).
Error response (this unit Ó control device)
When this unit could not correctly receive a command, it returns an
error.
err , Transmitted command
, ID , Sub-ID , Value
, ID , Sub-ID lf
lf
lf