User Manual

7
KRAMER
Electronics
MATRIX ROUTING SWITCHER
2 COMMUNICATION PROTOCOL “MX06”
INCLUDING OPTIONS (02/09/2005 VER-5.06)
This RS-232 / RS-485 communication protocol uses four bytes of information as defined
below.
For RS-232, a null-modem connection between the machine and controller is used. The
default data rate is 9600 baud, with no parity, 8 data bits and 1 stop bit.
MSB LSB
1
st
byte DEST INSTRUCTION
0 D N5 N4 N3 N2 N1 N0
76 543210
2
nd
byte INPUT / DATA
1 D6 D5D4D3D2D1D0
76 543210
3
rd
byte OUTPUT / ADRESS
1 A6 A5A4A3A2A1A0
76 543210
4
th
byte LAYER NUMBER
1Bit 7
MSB output
Bit 7
MSB input
L4 L3 L2 L1 L0
76 543210
1
st
BYTE: Bit 7 – Defined as 0.
D – “DEST”: 0 - for sending to the switcher (from the PC or keyboard).
1 - for sending to the PC or keyboard (from the switcher).
N5…N0 – “INSTRUCTION”
The function that is to be performed by the switcher(s) is defined by the INSTRUCTION (6
bits). The instruction codes are defined according to the table below (INSTRUCTION NO. is
the value to be set for N5…N0).