KRAMER ELECTRONICS, LTD.
15
INPUT
1
I6
I5
I4
I3
I2
I1
I0
7
6
5
4
3
2
1
0
2
nd
byte
OUTPUT
1
O6
O5
O4
O3
O2
O1
O0
7
6
5
4
3
2
1
0
3
rd
byte
MACHINE NUMBER
1
0
0
M4
M3
M2
M1
M0
7
6
5
4
3
2
1
0
4
th
byte
1
st
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).
2
nd
BYTE:
Bit 7 – Defined as 1.
I6…I0 – “INPUT”.
When switching (i.e. 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.
3
rd
BYTE:
Bit 7 – Defined as 1.
O6…O0 – “OUTPUT”.
When switching (i.e. 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.
4
th
BYTE: Bit 7 – Defined as 1.
Bit 6, bit 5 – Defined as 0.
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.
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.
