Kramer Electronics VP-81KSi user manual Machine Number

Kramer Protocol

2nd byte

							OUTPUT
	1		O6		O5	O4		O3		O2	O1	O0
	7		6		5	4		3		2	1	0
3rd byte
									MACHINE NUMBER
	1		OVR		X	M4		M3		M2	M1	M0
	7		6		5	4		3		2	1	0
4th byte
1st 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).

2nd 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.

3rd 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.

4th BYTE: Bit 7 – Defined as 1.

Bit 5 – Don’t care.

OVR – Machine number override. M4…M0 – MACHINE NUMBER.

Used to address machines in a system via their machine numbers. When several machines are controlled from a single serial port, they are usually configured together with each machine having an individual machine number. If the OVR bit is set, then all machine numbers will accept (implement) the command, and the addressed machine will reply.

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 18: 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	Set equal to video output which	2
			which is to be switched	is to be switched
			(0 = disconnect)	(0 = to all the outputs)
	2	SWITCH AUDIO	Set equal to audio input	Set equal to audio output	2
			which is to be switched	which is to be switched
			(0 = disconnect)	(0 = to all the outputs)
42				KRAMER: SIMPLE CREATIVE TECHNOLOGY