9 kramer vp-727a-ba protocol (ver. 3.21), Kramer vp-727a-ba protocol (ver. 3.21), A protocol for the vp-727a-ba is described below – Kramer Electronics VP-727A-BA User Manual
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Kramer VP-727A-BA Protocol (Ver. 3.21)
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9 Kramer VP-727A-BA Protocol (Ver. 3.21)
A protocol for the VP-727A-BA is described below.
For RS-232: A null-modem connection between the PC and the VP-727A-BA
is required, and data is at 9600 baud (for standalone
For RS-485: A differential (2 wire) connection between the VP-727(xl) and the
VP-727A-BA is required (A, B); GND may be connected to the shield if
required.
), no parity, 8 data bits, and
1 stop bit.
All values shown are hexadecimal.
Table 4: Instruction Codes for the VP-727A-BA Protocol
INSTRUCTION
1
st
Byte
2
nd
Byte
3
rd
Byte
4
th
Byte COMMENT
FACTORY RESET
00
81
81
81
See NOTE 1
RESET
00
80
80
81
INPUT 1 → PROGRAM OUT
02
81
81
81
INPUT 2 → PROGRAM OUT
02
82
81
81
INPUT 3 → PROGRAM OUT
02
83
81
81
Select
INPUT 4 → PROGRAM OUT
02
84
81
81
Input
INPUT 5 → PROGRAM OUT
02
85
81
81
for
INPUT 6 → PROGRAM OUT
02
86
81
81
Program
INPUT 7 → PROGRAM OUT
02
87
81
81
INPUT 8 → PROGRAM OUT
02
88
81
81
See NOTE 1
READ PROGRAM INPUT #
06
81
80
81
See NOTE 3
INPUT 1 → PREVIEW OUT
02
81
82
81
INPUT 2 → PREVIEW OUT
02
82
82
81
INPUT 3 → PREVIEW OUT
02
83
82
81
Select
INPUT 4 → PREVIEW OUT
02
84
82
81
Input
INPUT 5 → PREVIEW OUT
02
85
82
81
For
INPUT 6 → PREVIEW OUT
02
86
82
81
Preview
INPUT 7 → PREVIEW OUT
02
87
82
81
INPUT 8 → PREVIEW OUT
02
88
82
81
See NOTE 1
READ PREVIEW INPUT #
06
82
80
81
See NOTE 3
1 38,400 baud when operating with the VP-727xl and 115,200 baud when operating with the VP-727