QuickMedia™ Matrix Switcher/Mixer
Crestron
QM-MD7x2
Appendix: Serial Protocol
All commands and responses are printable ASCII and are terminated with a <CR>
(\x0D).
The serial commands listed here are grouped into front panel functions, verbose
mode functions, and switching/routing functions.
Multiple serial commands cannot be strung together.
NOTE:
When programming the MD7x2 using serial commands, digital and analog
switching commands should not be used. However, digital and analog mixing
commands can still be used. Similarly, if the MD7x2 is to be programmed with
digital and analog switching commands, serial commands should not be used.
Front Panel Functions
Front Panel Lock Commands
COMMAND FUNCTION
L0\r
Unlock front panel
L1\r
Lock front panel
L?\r
Get lock status
If the MD7x2 is in the local mode and the “Lock front panel” is sent, the MD7x2
will switch to the system mode and use the switching schema specified by the
control system. If the MD7x2 is already in the system mode, the operating mode will
not change.
When set via serial command, the front panel lock setting is not retained when power
to the MD7x2 is recycled. To retain the panel lock setting, a digital signal must be
used.
When the verbose mode is on and the lock state changes, or if the MD7x2 is polled
for the status of the front panel lock, the MD7x2 replies with one of the responses
listed in the following table.
Panel Lock Status Replies
MESSAGE DEFINITION
L1\r
Front panel is locked
L0\r
Front panel unlocked
Verbose Mode Functions
The MD7x2 has a verbose mode, which can be turned on or off via serial commands
only. The verbose mode is used to automatically report any changes made to the
switching schema. The default setting for the verbose mode is off. If the verbose
mode is on, whenever a parameter of the switch changes, a message is sent from the
MD7x2 that indicates the new state of the parameter. If verbose mode is off, the
MD7x2 will only send messages when queried.
The setting for the verbose mode is retained even after power to the MD7x2 is
cycled.
Commands can be sent to the MD7x2 regardless of the status of the verbose mode.
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QuickMedia™ Matrix Switcher/Mixer: QM-MD7x2
Operations Guide - DOC. 6273
