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Table 5: instruction codes for protocol 2000 – Kramer Electronics VS-81HDxl User Manual

Page 22

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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Kramer Protocol 200030F

20

4

th

BYTE:

Bit 7 – Defined as 1.

Bits 5, 6 – Don’t care.

M4…M0 – MACHINE NUMBER.

Used to address machines in a system via their machine numbers.

For a single machine controlled via the serial port, always set M4…M0 = 1, and make sure that the machine itself is
configured as MACHINE NUMBER = 1.

When several machines are controlled from a single serial

port, they are usually configured together with each machine having an individual machine number.

Table 5: Instruction Codes for Protocol 2000

Note: All values in the table are decimal, unless otherwise stated.

INSTRUCTION

DEFINITION FOR SPECIFIC INSTRUCTION

NOTE

#

DESCRIPTION

INPUT

OUTPUT

0

RESET VIDEO

0

0

1

1

SWITCH VIDEO

Set equal to video input

which is to be switched

(0 = disconnect)

Set equal to video output which is

to be switched

(0 = to all the outputs)

2,

5

REQUEST STATUS OF A

VIDEO OUTPUT

0

Equal to output number whose

status is read

4

16

ERROR / BUSY

0

0 - error
1 - invalid instruction
2 - out of range

9

30

LOCK FRONT PANEL

0 - Panel unlocked
1 - Panel locked

0

2

31

REQUEST WHETHER PANEL

IS LOCKED

0

0

16

61

IDENTIFY MACHINE

1 - video machine name
3 - video software version

0 - Request first 4 digits
1 - Request first suffix
10 - Request first prefix

13

62

DEFINE MACHINE

1 - number of inputs
2 - number of outputs
3 - number of setups

1 - for video

14

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 will perform the instruction; and if
the instruction is performed (due to a keystroke operation on the front panel), then these codes are sent. For example, if the
HEX code
01

85

88

83

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 HEX codes:
41

81

87

83

to the PC.
When the PC sends one of the commands in this group to the switcher, then, if the instruction is valid, the switcher replies by
sending to the PC the same four bytes that it was sent (except for the first byte, where the DESTINATION bit is set high).

NOTE 4 - The reply to a "REQUEST" instruction is as follows: the same instruction and INPUT codes as were sent are
returned, and the OUTPUT is assigned the value of the requested parameter. For example, if the present status of a Video
Output 1 is 3, then the reply to the HEX code

05

80

81

81

would be HEX codes
45

80

83

81


NOTE 9 - An error code is returned to the PC if an invalid instruction code was sent to the switcher, or if a parameter
associated with the instruction is out of range. This code is also returned to the PC if an RS-232 instruction is sent while the
machine is being programmed via the front panel. Reception of this code by the switcher is not valid.