Roland REAC R-1000 Reference page 8

Command details
LPC : Panel operation lock/unlock
Function Make the setting for locking or unlocking panel operations.
The STANDBY button on the front panel can also unlock locked panel operations.
Syntax stxLPC:a,b; (command syntax : type 2)
a:Lock/Unlock (0 = Unlock, 1 = Lock)
b:STANDBY button setting (0 = Unlock, 1 = Lock)
Example)
stxLPC:1,0;
Lock panel operations except the STANDBY button on the front panel.
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