Kramer Electronics VP-4x4K User Manual

Page 58

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VP-4x4K - Kramer Protocol

Instruction Codes for Protocol 2000
INSTRUCTION

DEFINITION FOR SPECIFIC INSTRUCTION

NOTE

DESCRIPTION

INPUT

OUTPUT

DEFINE MACHINE

1 - number of inputs

2 - number of outputs

3 - number of setups

1 - for video

2 - for audio

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

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:

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 3 - SETUP # 0 is the present setting. SETUP # 1 and higher are the settings saved in the switcher's memory, (i.e.

those used for Store and Recall).

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. The replies to instructions 10 and 11 are

as per the definitions in instructions 7 and 8 respectively. For example, if the present status of machine number 5 is

breakaway setting, then the reply to the HEX code

would be HEX codes

NOTE 6 – If INPUT is set to 127 for these instructions, then, if the function is defined on this machine, it replies with

OUTPUT=1. If the function is not defined, then the machine replies with OUTPUT=0, or with an error (invalid instruction

code).

If the INPUT is set to 126 for these instructions, then, if possible, the machine will return the current setting of this

function, even for the case that the function is not defined. For example, for a video switcher which always switches

during the VIS of input #1, (and its VIS setting cannot be programmed otherwise), the reply to the HEX code

81 (i.e. request VIS setting, with INPUT set as 126dec)

would be HEX codes

81 (i.e. VIS setting = 1, which is defined as VIS from input #1).

NOTE 8 - The reply is as in TYPE 3 above, except that here the OUTPUT is assigned with the value 0 if the setup is not

defined/no valid input is detected; or 1 if it is defined/valid input is detected.

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 (e.g. trying to save to a setup greater than the highest one, or trying to

switch an input or output greater than the highest one defined). 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.

NOTE 10 – This code is reserved for internal use.

NOTE 13 - This is a request to identify the switcher/s in the system. If the OUTPUT is set as 0, and the INPUT is set as

1, 2, 5 or 7, the machine will send its name. The reply is the decimal value of the INPUT and OUTPUT. For example, for

a 2216, the reply to the request to send the audio machine name would be (HEX codes):

81 (i.e. 128dec+ 22dec for 2nd byte, and 128dec+ 16dec for 3rd byte).

If the request for identification is sent with the INPUT set as 3 or 4, the appropriate machine will send its software

version number. Again, the reply would be the decimal value of the INPUT and OUTPUT - the INPUT representing the

number in front of the decimal point, and the OUTPUT representing the number after it. For example, for version 3.5, the

reply to the request to send the version number would be (HEX codes):

81 (i.e. 128dec+ 3dec for 2nd byte, 128dec+ 5dec for 3rd byte).

If the OUTPUT is set as 1, then the ASCII coding of the lettering following the machine’s name is sent. For example, for

the VS-7588YC, the reply to the request to send the first suffix would be (HEX codes):

81 (i.e. 128dec+ ASCII for “Y”; 128dec+ ASCII for “C”).

NOTE 14 - The number of inputs and outputs refers to the specific machine which is being addressed, not to the system.

For example, if six 16X16 matrices are configured to make a 48X32 system (48 inputs, 32 outputs), the reply to the HEX

code

82 (i.e. request the number of outputs)

would be HEX codes

i.e. 16 outputs

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