Visca command/ack protocol, 2 command list – Vaddio EVI-D80D90 Tech User Manual

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2

Command List

VISCA Command/ACK Protocol

Command

Command Message

Reply Message

Comments

General Command

81 01 04 38 02 FF
(Example)

90 41 FF (ACK)+90 51 FF
(Completion)
90 42 FF 90 52 FF

Returns ACK when a command has been accepted, and
Completion when a command has been executed.

81 01 04 38 FF
(Example)

90 60 02 FF (Syntax Error)

Accepted a command which is not supported or a command
lacking parameters.

81 01 04 38 02 FF
(Example)

90 60 03 FF
(Command Buffer Full)

There are two commands currently being executed, and the
command could not be accepted.

81 01 04 08 02 FF
(Example)

90 61 41 FF
(Command Not Executable)
90 62 41FF

Could not execute the command in the current mode.

Inquiry Command

81 09 04 38 FF
(Example)

90 50 02 FF (Completion)

ACK is not returned for the inquiry command.

81 09 05 38 FF
(Example)

90 60 02 FF (Syntax Error)

Accepted an incompatible command.

Address Set

88 30 01 FF

88 30 0w FF

w: Returned the device address to +1. (2 to 8)

IF_Clear(Broadcast)

88 01 00 01 FF

88 01 00 01 FF

Returned the same command.

IF_Clear (For x)

8x 01 00 01 FF

z0 50 FF (Completion)

ACK is not returned for this command.

Command Cancel

8x 2y FF
(y:Socket No.)

z0 6y 04 FF
(Command Canceled)

Returned when the command of the socket specified is canceled.
Completion for the command canceled is not returned.

z0 6y 05 FF (No Socket)

Returned when the command of the specified socket has already
been completed or when the socket number specified is wrong.

z = Device address + 8

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