Crestron electronic QUICK MEDIA DISTRIBUTION CENTER QM-MD4X2 - Manual (Page 36)

QuickMedia Distribution System Crestron QM-MD4x2
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.
NOTE: Multiple serial commands cannot be strung together.
NOTE: When programming the MD4x2 using serial commands, digital and analog
commands should not be used. However, digital and analog output can be monitored
by the control system. Similarly, if the MD4x2 is to be programmed with digital and
analog 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
NOTE: If the MD4x2 is in the local mode and the “Lock front panel” is sent, the
MD4x2 will switch to the system mode and use the switching schema specified by
the control system. If the MD4x2 is already in the system mode, the operating mode
will not change.
NOTE: When set via serial command, the front panel lock setting is not retained
when power to the MD4x2 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 MD4x2 is polled
for the status of the front panel lock, the MD4x2 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 MD4x2 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
MD4x2 that indicates the new state of the parameter. If verbose mode is off, the
MD4x2 will only send messages when queried.
32 • QuickMedia Distribution System: QM-MD4x2 Operations Guide - DOC. 6278