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KRAMER: SIMPLE CREATIVE TECHNOLOGY

Kramer Protocol 2000

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.

Table 7: Instruction Codes for Protocol 2000

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

INSTRUCTION DEFINITION FOR SPECIFIC INSTRUCTION

# DESCRIPTION INPUT OUTPUT

NOTE

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)

3 STORE VIDEO STATUS Set as SETUP # 0 - to store

1 - to delete

2, 3

4 RECALL VIDEO STATUS Set as SETUP # 0 2, 3

5 REQUEST STATUS OF A

VIDEO OUTPUT

Set as SETUP # Equal to output number whose

status is reqd

4, 3

15 REQUEST WHETHER SETUP

IS DEFINED

SETUP # 0 - for checking if setup is defined

61 IDENTIFY MACHINE 1 - video machine name

3 - video software version

0 - Request first 4 digits

1 - Request first suffix

2 - Request second suffix

10 - Request first prefix

62 DEFINE MACHINE 1 - number of inputs

2 - number of outputs

3 - number of setups

1 - for video

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 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

0B 80 80 85

would be HEX codes

4B 80 81 85

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 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):

7D 96 90 81 (i.e. 128dec+ 22dec for 2nd byte, and 128dec+ 16dec for 3rd byte).