Gs Enq - Epson TM-U925 Manual

GS ENQ

[Name] Real-time printer status transmission
[Format] ASCII
Hex
Decimal
[Description] Transmits status of the printer in real time.
· The printer transmits only 1 byte without checking the DSR signal.
[Notes]
· This command is also enabled in the off-line state, in the receive buffer-full state, and in
an error state.
· The printer status is transmitted whenever the data sequence of 1DH (29),
05H (5) is received.
· This command should not be used within the data sequence of another command that
consists of two or more bytes.
· This command should not be used with handshaking of 7-bit data word length and
XON/XOFF control. Otherwise, the status transmitted using this command cannot be
differentiated from the XON/XOFF codes.
· When Auto Status Back (ASB) is enabled using GS a, the status transmitted by GS
ENQ and the ASB status must be differentiated, using the table in Appendix B,
Transmit Status Identification .
EPSON
GS ENQ
1D 05
29 5
Example:
In ESC p m t1 t2: t1 = 1DH (29), t2 = 05H (5)
In ESC * * * * m n
n [d] n
L H
Example:
If you attempt to transmit ESC 3 n to the printer, be sure to transmit n before
transmitting GS ENQ regardless of the condition of the DTR signal (DSR for the host
If GS ENQ interrupts before n is received, n is processed as 1DH (29).
computer).
TITLE
TM-U925
Specification
(STANDARD)
+ 256 ´ ´ ´ ´ n
: d1 = 1DH (29), d2 = 05H (5)
L H
SHEET
REVISION
NO.
NEXT SHEET
A
98 97