SATO GT424 - Manual (Page 131)

Section 5: Interface Specifications
GT Series Operator’s Manual Page 5-49
b) Status Byte Definition
(4) Print Start Request
In receiving this command, Print Stop is cleared and the printer commences printing.
The status responded is the status of the printer after reception has been completed.
a) Command DC1 (Hex 11H)
b) Status Byte Definition
Status Contents
ACK (Hex 06H) Indicates that there is no printer error
NAK (Hex 15H) Indicates that there is a printer error
Status Contents
ACK (Hex 06H) Indicates that there is no printer error
NAK (Hex 15H) Indicates that there is a printer error