Epson TM-300A Operator's Manual page 72

The following shows an example program used when the drawer connected to
the drawer drive signal 1 is driven using an ON time of 200 ms.
PRINT #1, CHR$ (&H1B); "P"; CHR$ (0); CHR$ (100);
GOSUB * WAIT300MS
*WAIT300MS
300 [ms] wait routine
RETURN
NOTE: * This part is indicated in Formula F-3. Set this value so that it can
satisfy Formula F-3 (or provides an internal processing time at
least as long as the wait routine time.)
When the drawer is driven according to the conditions above, the drive
waveform is as shown in Figure F-2.
Figure F-2. Example Drawer Drive. Signal Waveform
ON time 200 ms
(* NOTE)
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C H R $ ( 2 5 0 ) ;
OFF time 500 ms