Kramer Protocol 2000
25
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)
2
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
10
REQUEST SIGNAL STANDARD
SETTING
Input number
0
4, 5
15
REQUEST WHETHER SETUP IS
DEFINED
SETUP #
0 - for checking if setup is defined
8
16
ERROR / BUSY
0
0 - error
1 - invalid instruction
2 - out of range
3 - machine busy
6 - RX buffer overflow
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
2 - Request second 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 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. For example, if the present status of output
number 3 is "connected to input number 2", then the reply to the HEX code
05
80
83
81
would be HEX codes
45
80
82
81
