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Communication Protocol
21
Table 7: Protocol Instruction Codes
Note: All values in the table are decimal, unless otherwise stated.
INSTRUCTION
DEFINITION FOR SPECIFIC INSTRUCTION
#
DESCRIPTION
INPUT
OUTPUT
NOTE
0
RESET MACHINE
0
0
1
1
SWITCH VIDEO
Set equal to video input to be
switched
Set equal to video output to be switched
(0=to all the outputs)
2
2
SWITCH AUDIO
Set equal to audio input to be
switched
Set equal to audio output to be switched
(0=to all the outputs)
2
3
STORE STATUS
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
- To store parameters
- to delete setup
2,7
4
RECALL STATUS
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Don’t care
2,7
5
REQUEST STATUS OF A
VIDEO OUTPUT
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Equal to output number whose status is
read
3,7
6
REQUEST STATUS OF
AN AUDIO OUTPUT
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Equal to output number whose status is
read
3,7
7
VIS SETTING
Don’t care
- for immediate switching
- for VIS switching
2
8
BREAKAWAY SETTING
Don’t care
- for audio-follow-video
- for breakaway
2
9
NOT USED
10
REQUEST VIS SETTING
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Don’t care
3,7
11
REQUEST BREAKAWAY
SETTING
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Don’t care
3,7
12 to
14
NOT USED
15
REQUEST WHETHER
SETUP IS DEFINED
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Don’t care
4
16
ERROR/BUSY
Don’t care
Don’t care
5
17
RESERVED
6
18
RESET MACHINE
0
0
1
19
STORE STATUS
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
0-to store parameters
1-to delete setup
2,7,9
20
RECALL STATUS
Set as SETUP # 1-6 (1-8) for
the VS-626 (VS-828)
Don’t care
2,7,10
21 to
56
NOT USED
57
SET AUTO-SAVE
for auto save
0 – no save
Don’t care
8,2
58 to
60
RESERVED
61
IDENTIFY MACHINE
1or 2 – machine name
3 or 4 – version
Don’t care
11
NOTES ON THE ABOVE TABLE:
NOTE 1
- When the master switcher is reset, (e.g. when it is turned on), the reset code is sent to the PC. If this code is sent to the
switchers, it will reset according to the present power-down settings.
NOTE 2
- These are bi-directional definitions. That is, if the switcher receives the code, it performs the instruction, and if the instruction
is performed (due to a keystroke on the front panel), then these codes are sent. For example:
0000 0001
1000 0101
1000 1000
0011
was sent from the PC, then the switcher (machine # 3) will switch input 5 to output 8. If the user switched input # 1 to output # 7 via the
front panel keypad, then the switcher will send:
0100 0001
1000 0001
1000 0111
1000 0011
to the PC.