Extron Electronics MLC 206 AAP EC User Guide - Manual (Page 35)

4-3 MediaLink Controllers • Serial Communication
E16 – Unit is busy
E23 – Checksum error.
Using the command/response tables
The command/response tables below and on the following pages list valid
command ASCII codes, the MLC’s responses to the host, and a description of the
command’s function or the results of executing the command. Upper and lower
case characters may be used interchangeably in the command field.
The ASCII to HEX conversion
table at left is for use with the
command/response tables. ASCII to HEX Conversion Table
•
ASCII to Hex conversion table
X3 = Volume adjustment range (0 through 100%)
X4 = Relay number (1 through 3)
X5 = Relay status
0 = off
1 = on
X6 = Controller firmware version (listed to
two decimal places e.g.: x.xx)
X7 = On/off status
0 = off/disable
1 = on/enable
Symbol definitions
= CR/LF (carriage return/line feed) (hex 0D 0A)
• = Space
Esc = Escape key
X1 = Specific input number (0 through 6 maximum)
0 = no connection
1 = input 1, 2 = input 2, and so forth
X2 = Display power status (0 through 3)
0 = display power is off
1 = display power is on
2 = display is powering down
3 = display is powering up
Command/response table for SIS commands
Command ASCII Command Response Additional description
(host to MLC) (MLC to host)
Input/button selection
Select an input/button X1 ! Chn X1 Select input X1 .
Btn X1 Select button X1 (if button isn’t
part of the switching rotation).
Example: 6! Chn6 Example: select input 6.
Display (projector) power
Turn display power on 1P Pwr X2 On (discrete).
Turn display power off 0P Pwr X2 Off (discrete).
View display power status P Pwr X2 Show the display power status.
Example: P Pwr2
Relay functions
Turn relay off X4 *0O Rly X4 *0 Toggle relay number X4 off.
Example: 3*0O Rly30 Set relay 3 to off.
Turn relay on X4 *1O Rly X4 *1 Toggle relay number X4 on.
View relay status X4 O Rly X4 * X5 Show the status of relay X4 .
Example: 2O Rly2*1 Show the status of relay 2.