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9 kramer protocol 2000, Kramer protocol 2000, Table 4: protocol definitions – Kramer Electronics VS-81HDxl User Manual

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Kramer Protocol 200030F

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9 Kramer Protocol 2000

1

The VS-81HDxl is compatible with Kramer’s Protocol 2000 (version 0.50)
(below)

2

The VS-81HDxl machine uses a sub-set of Protocol 2000. Only these
commands are described below:

. This RS-232/RS-485/Ethernet (app. level) communication protocol

uses four bytes of information as defined below. For RS-232, a null-modem
connection between the machine and controller is used. The default data rate
is 9600 baud, with no parity, 8 data bits and 1 stop bit.

Table 4: Protocol Definitions

MSB

LSB

DESTI-

NATION

INSTRUCTION

0

D

N5

N4

N3

N2

N1

N0

7

6

5

4

3

2

1

0

1st byte

INPUT

1

I6

I5

I4

I3

I2

I1

I0

7

6

5

4

3

2

1

0

2nd byte

OUTPUT

1

O6

O5

O4

O3

O2

O1

O0

7

6

5

4

3

2

1

0

3rd byte

MACHINE NUMBER

1

X

X

M4

M3

M2

M1

M0

7

6

5

4

3

2

1

0

4th byte

1

st

BYTE:

Bit 7 – Defined as 0.

D – “DESTINATION”:

0 - for sending information to the switchers (from the PC);

1 - for sending to the PC (from the switcher).
N5…N0 – “INSTRUCTION”
The function that is to be performed by the switcher(s) is defined by the INSTRUCTION (6 bits). Similarly, if a function is
performed via the machine’s keyboard, then these bits are set with the INSTRUCTION NO., which was performed. The
instruction codes are defined according to the table below (INSTRUCTION NO. is the value to be set for N5…N0).

2

nd

BYTE:

Bit 7 – Defined as 1.

I6…I0 – “INPUT”.

When switching (ie. instruction codes 1 and 2), the INPUT (7 bits) is set as the input number which is to be switched.
Similarly, if switching is done via the machine’s front-panel, then these bits are set with the INPUT NUMBER which was
switched. For other operations, these bits are defined according to the table.

3

rd

BYTE:

Bit 7 – Defined as 1.

O6…O0 – “OUTPUT”.

When switching (ie. instruction codes 1 and 2), the OUTPUT (7 bits) is set as the output number which is to be switched.
Similarly, if switching is done via the machine’s front-panel, then these bits are set with the OUTPUT NUMBER which was
switched. For other operations, these bits are defined according to the table.

1 You can download our user-friendly “Software for Calculating Hex Codes for Protocol 2000” from the technical support

section on our Web site at: http://www.kramerelectronics.com

2 The full Protocol 2000 can be downloaded from on our Web site at:

http://www.kramerelectronics.com

. Only the commands

relevant to the VS-81HDxl are shown here