Kramer Electronics VP-727A-BA - Manual (Page 25)

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 1
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