Epson ES-1200C - Manual (Page 66)

Initialization
The scanner can be initialized (returned to a fixed set of
conditions) in three ways.
Hardware initialization:
When the power is turned on.
When the scanner receives an INIT signal at the parallel
interface (pin 31 goes low).
When the scanner receives a SCSI Reset signal at the SCSI
interface.
Software initialization:
When the software command ESC @ (initialize the scanner)
is received.
When the SCSI Bus Device Message is received.
Technical Specifications 4-11