Sony SRG-300SE Manual técnico - Página 19
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Socket number
This unit has two sets of sockets (buffers) for
commands, so that up to two commands including the
commands currently being executed can be received.
When this unit receives commands, it notifies the
sender which socket was used, using the socket number
of the Acknowledge message. As each of the
completion message and error message also has a
socket number, you can identify which command has
ended.
When sending the commands continuously, be sure to
wait until an Acknowledge message or error message of
the first command is returned, then send the next
command. (Otherwise, it is impossible to identify to
which command the socket number belongs.)
Even when two sockets are being used, the device
setting commands and some inquiry messages can be
executed. The Acknowledge message is not returned
for these commands and inquiries, and only the
completion message of socket number 0 is returned.
Command execution cancel
To cancel a command which has already been sent,
send a Cancel command as the next command.
Cancel Packet
Cancel
8X 2Y FF
X = 1 to 7: Address of this unit in the daisy chain, Y = socket number
Error message "Command canceled" will be returned
for this command, but this is not a fault. It indicates
that the command has been canceled.
Note
Y = socket number
VISCA Device Setting Command
Before starting control of this unit, be sure to send the
Address command and the IF_Clear command using
the broadcast function.
For VISCA network administration
Address
Sets an address of a peripheral device. Use when
initializing the network, and receiving the following
network change message.
Network Change
Sent from the peripheral device to the controller
when a device is removed from or added to the
network. The address must be re-set when this
message is received.
Packet
Address
88 30 01 FF
Network Change
X0 38 FF
X = 9 to F: SRG address + 8
VISCA interface command
IF_Clear
Clears the socket in the SRG.
When cleared, the operation currently being
executed is not guaranteed.
Command Packet
IF_Clear
8X 01 00 01 FF
IF_Clear (broadcast)
88 01 00 01 FF
X = 1 to 7: Address of this unit in the daisy chain (For inquiry packet)
Z = 9 to F: Address of this unit that issued IF_Clear command +8 (For
reply packet)
Command List
Note
Always broadcasted.
Reply Packet
Note
Z0 50 FF
88 01 00 01 FF
1