Specifications

Confidential
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App. 1
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TM-T90
Specification
(STANDARD)
APPENDIX G: NOTES ON UPDATING THE MAINTENANCE
COUNTER AND TURNING THE PRINTER’S POWER
OFF
G.1 About updating the maintenance counter
• This printer has a maintenance counter function, as described in the command description for
GS g 0 and GS g 2.
• The values of the maintenance counter are automatically stored in the NV memory every 2
minutes (or 4 minutes maximum) when the printer is operating, except in the power save
mode.
• However, if the power off is performed as described in Section G.2, the printer stores the latest
values of the maintenance counter and executes the power off control, regardless of the
updating interval described above.
• If the printer is not sending/receiving data or is not operating for two seconds while the power is
turned on, the printer enters the power-saving mode and all of the values of the maintenance
counter including the printer operation time stop counting.
G.2 About the printer’s power off
In order to keep the latest values in the maintenance counter, the printer must be turned off by the
following procedure. If the printer is turned off by any other than this procedure, the latest values of
the maintenance counter cannot be saved.
1) Turn the printer's power off using the power button in the front.
2) Execute the DLE DC4 (fn = 2) command from the host to turn the printer’s power off.
G.2.1 Printer setup control by the host with printer power off
Follow the procedure below for setting up the printer first.
1) Turn the printer's power off using the power button in the front.
2) Wait until the POWER LED turns off.
3) Turn DIP switch 1-1 on.
4) Turn the printer's power on using the power button.
5) Attach the power button cover on the power button.
G.2.2 Power off control by the host
The following is an example of the printer power off process when the printer is turned off using the
DLE DC4 (fn = 2) command.
1) The host transmits the following continuous procedure before the system is turned off:
➀ Executes the last print command such as LF, ESC d, etc.
➁ Executes GS ( D p
L
p
H
m a b (p
L
=3, p
H
=0, m =20, a =2, b =1)
➂ Executes GS r n (n =1)
2) The host waits for the paper sensor status sent from the printer in response to the GS r n
command.
3) The host transmits DLE DC4 fn a b (fn =2, a =1, b =8).
4) The host waits for the power off status.
• The values of the maintenance counter are stored and the power-off sequence is
performed within 10 seconds after the host transmits DLE DC4 fn a b; then the power off
status is transmitted.
• If the power off status is not checked, the host waits for 10 seconds or more after
transmitting DLE DC4 fn a b.
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