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Command List
Timing Chart
As VISCA Command processing can only be carried
out one time in a Vertical cycle, it takes the maximum
1V cycle time for an ACK/Completion to be returned.
If the Command ACK/Completion communication
time can be cut shorter than the 1V cycle time, then
every 1V cycle can receive a Command.
16 Byte
General Commands
General Commands
Command
ACK Completion
Command
Completion
1)
1)
1) 1V cycle times on each SYSTEM SELECT and Shutter Speed.
Shutter Speed
SYSTEM SELECT
1080i/60/59.94
1080p/30/29.97
720p/30/29.97
720p/60/59.94
1/10000 sec to 1/60 sec 1/30 sec 1/60 sec
1/30 sec 1/30 sec 1/30 sec
1/15 sec 1/15 sec 1/15 sec
1/8 sec 1/8 sec 1/8 sec
1/4 sec to 1/1 sec 1/4 sec to 1/1 sec
1/4 sec to 1/1 sec
Shutter Speed
SYSTEM SELECT
1080i/50
1080p/25
720p/25
720p/50
1/10000 sec to 1/50 sec 1/25 sec 1/50 sec
1/25 sec 1/25 sec 1/25 sec
1/12 sec 1/12 sec 1/12 sec
1/6 sec 1/6 sec 1/6 sec
1/3 sec to 1/1 sec 1/3 sec to 1/1 sec
1/3 sec to 1/1 sec
Command and inquiry
Command
Sends operational commands to the
EVI-H100S/H100V.
Inquiry
Used for inquiring about the current state of the
EVI-H100S/H100V.
Command Packet Note
Inquiry 8X QQ RR ... FF QQ
1)
= Command/Inquiry,
RR
2)
= category code
1)
QQ = 01 (Command), 09 (Inquiry)
2)
RR = 00 (Interface), 04 (camera 1), 06 (Pan/Tilter)
X = 1 to 7: EVI-H100S/H100V address
Responses for commands and inquiries
ACK message
Returned by the EVI-H100S/H100V when it receives
a command. No ACK message is returned for
inquiries.
Completion message
Returned by the EVI-H100S/H100V when execution
of commands or inquiries is completed. In the case
of inquiry commands, it will contain reply data for
the inquiry after the 3rd byte of the packet. If the
ACK message is omitted, the socket number will
contain a 0.
Reply Packet Note
Ack X0 4Y FF Y = socket number
Completion (commands) X0 5Y FF Y = socket number
Completion (Inquiries) X0 5Y ... FF Y = socket number
X = 9 to F: EVI-H100S/H100V address + 8
Error message
When a command or inquiry command could not
be executed or failed, an error message is returned
instead of the completion message.
Error Packet Description
X0 6Y 02 FF Syntax Error
X0 6Y 03 FF Command buffer full
X0 6Y 04 FF Command canceled
X0 6Y 05 FF No socket (to be canceled)
X0 6Y 41 FF Command not executable
X = 9 to F: EVI-H100S/H100V address + 8, Y = socket number
Socket number
When command messages are sent to the
EVI-H100S/H100V, it is normal to send the next
command message after waiting for the completion
message or error message to return. However to deal
with advanced uses, the EVI-H100S/H100V has two
buffers (memories) for commands, so that up to two
commands including the commands currently being
executed can be received. When the
EVI-H100S/H100V receives commands, it notifies the
sender which command buffer was used using the
socket number of the ACK message.