Brother HL-2170W - Manual (Page 501)

APPENDIX C HBP MODE COMMANDS - 7
3.2.3 Sleep mode setting commands
Command
@T+ *
Function
This command sets the sleep time in minutes.
Explanation
This command is valid immediately after the printer receives the command.
The command is valid until one of the following occurs.
(1) The printer receives the Exit command.
(2) The printer receives a new sleep time setting command.
(3) The printer power is turned off.
(4) InputPrime Signal is brought LOW.
This command sets the time from the last printer operation (printing, key pressing, motor being driven) to
entering sleep mode.
1 byte of binary data (0-255) after the @T command indicates the minute(s) delay to enter sleep mode.
However, there are two exceptions. If the value is set to 0, the sleep time is set to 5 seconds. If the value is set
to 255, the printer does not go into sleep mode.
For the HL-1040, the command is valid during HBP mode only, it is not effective after using the @X Exit
command.
Note1:
Sleep time means the time from the last operation ( Key Pressing, Data receiving, Printing) to entering sleep
mode.
Note2:
HL-1040 also accepts the PJL command which sets the sleep time. The sleep time set by the PJL command is
valid both in HBP mode and in Non-HBP modes. (PCL, EPSON or IBM emulation)