Specifications

Confidential
SHEET
80
NO.
SHEET
REVISION
H
TITLE
NEXT
81
TM-U590 series
Specification
(STANDARD)
DLE ENQ n
[Name] Real-time request to printer
[Format] ASCII DLE ENQ n
Hex 10 05 n
Decimal 16 5 n
[Range] n = 1, n = 2
[Description] Responds to a request from the host computer. n specifies the requests as follows:
n
Request
1 Recover from an error and restart printing from the line where the error occurred
2 Recover from an error aft clearing the receive and print buffers
[Notes] • The printer starts processing data upon receiving this command.
• This command is executed even when the printer is offline, the receive buffer is
full, or there is an error status with a serial interface model.
• With a parallel interface model, this command can not be executed when the
printer is busy. This command is executed even when the printer is offline or
there is an error status when DIP switch 2-1 is on with a parallel interface model.
• The status is also transmitted whenever the data sequence of <10>H<05>Hn (1
≤ n ≤ 3) is received.
Example:
In ESC ∗ m n
L
n
H
d1 ... dk, d1=<10>H, d2=<05>H, d3=<01>H
• This command should not be contained within another command that consists of
two or more bytes.
Example:
If you attempt to transmit ESC 3 n to the printer, but DTR (DSR for the host
computer) goes to MARK before n is transmitted, and DLE ENQ 1 interrupts
before n is received, the code <10>H for ESC 3 is processed.
• DLE ENQ 1 starts printing from the line where an error occurred. This command
is available only for errors that have the possibility of recovery.
• When the printer recovers from a recoverable error using DLE ENQ 1 or DLE
ENQ 2, and slip paper is selected, the printer ejects the slip completely and is in
the slip waiting state.
• DLE ENQ 2 enables the printer to recover from an error after clearing the data in
the receive buffer and the print buffer. The printer retains the settings (by ESC !,
ESC 3, etc.) that were in effect when the error occurred. The printer can be
initialized completely by using this command and ESC @. This command is
enabled only for errors that have the possibility of recovery.
• When the printer is disabled with ESC = (Select peripheral device), the error
recovery functions are enabled, and the other functions are disabled.
[Reference] DLE EOT