Data Video PTC-150T, Instruction Manual

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10.2.2.5 Socket number
When command messages are sent to the PTC-150, it is normal to send the next command
message after waiting for the completion message or error message to return.
As the completion message or error message also has a socket number, it indicates which
command has ended.
The ACK message is not returned for these commands and inquiries, and only the completion
message of socket number 0 is returned.
10.2.3 VISCA Device Setting Command
Before starting control of the PTC-150, be sure to send the Address command and the IF_Clear
command using the broadcast function.
10.2.3.1 VISCA interface command
•
IF_Clear
Clears the command buffers in the PTC-150 and cancels the command currently being executed.
Command Packet Reply Packet Note
IF_Clear 8X 01 00 01 FF X0 50 FF
IF_Clear (broadcast) 88 01 00 01 FF 88 01 00 01 FF
X = 1 to 7: PTC-150 address (For inquiry packet)
X = 9 to F: PTC-150 a 8 (For reply packet)
10.2.4 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 41 FF
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.