ARTHUR HOLM AH22D1HGA Manuale d'uso - Pagina 10

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AHNET PROTOCOL
AHnet protocol
Using 5 bytes communication:
BYTE 0
START BYTE
BYTE 1
ADDRESS BYTE
BYTE 2
COMMAND BYTE
BYTE 3
VALUE 1
BYTE 4
VALUE 2
Commands
COMMAND
DESCRIPTION
FA XX 01 01 00
GO UP
FA XX 01 00 00
GO DOWN
FA XX 01 03 00
GO UP TO MEMORY POSITION
FA XX 02 01 00
SCREEN ON
FA XX 02 00 00
SCREEN OFF
FA XX 03 01 00
DVI-A SELECTION
FA XX 03 00 00
DVI-1 SELECTION
FA XX 03 03 00
DVI-2 SELECTION
FA XX 04 01 00
BUTTON LOCK
FA XX 04 00 00
BUTTON UNLOCK
FA XX 14 00 00
INQUIRY CONTROL BYTE
XX
Number of the monitor address. Up to 30 monitors for each
RS422 BUS
CB1
Response in 8 bits of the monitor status
CB2
Response in 8 bits of the monitor status
18
RESPONSE
FB XX 01 01 00
FB XX 01 00 00
FB XX 01 03 00
FB XX 02 01 00
FB XX 02 00 00
FB XX 03 01 00
FB XX 03 00 00
FB XX 03 03 00
FB XX 04 01 00
FB XX 04 00 00
FB XX 14 CB1 CB2
AHNET PROTOCOL
CB1
BITE
7
MONITOR HORIZONTAL POSITION
MONITOR VERTICAL POSITION
MONITOR MEMORISED POSITION
SCREEN ON
SCREEN OFF
DVI 1-A
0
DVI 1-D
1
DVI 2-D
1
MONITOR OK
CB2
BITE
7
BUTTON LOCK
BUTTON UNLOCK
6
5
4
3
2
1
0
1
1
1
0
0
1
0
1
1
0
0
1
1
0
0
1
0
0
6
5
4
3
2
1
0
1
0
19