Epson TM-T88II Series Manual de Instruções descarregar pdf (Página 29)

Rev. A Features and General Specifications 1-17

TM-T88 Series Technical Manual

Notes on setting DIP switch 2-1 to ON

❏ The printer mechanism stops but does not become busy when: an error has occurred, the

cover is open, printing stops due to a paper-end, or paper is fed using the paper feed switch.

❏ When setting DIP switch 2-1 to ON to enable handshaking with the printer, be sure to check

the printer status using the GS a command and the ASB function. In this setting, the default

value of n for GS a is 2. The printer automatically transmits the printer status, depending on

on-line/off-line changes.

❏ When using DLE EOT and DLE ENQ, be sure that the receive buffer does not become full.

• When using a host that cannot transmit data when the printer is busy:

If an error has occurred, DLE EOT and DLE ENQ cannot be used when the printer is

busy due to a receive buffer-full state.

• When using a host that can transmit data when the printer is busy:

When the receive buffer becomes full while transmitting bit-image data, DLE EOT or

DLE ENQ used while sending the bit-image data is processed as bit-image data. The

data transmitted when the receive buffer is full may be lost.

Example: Check the printer status using GS r after transmitting each line of data and

use the 4K byte receive buffer. Transmit one line of data so that the receive

buffer does not become full.

Notes on Resetting the Printer Using the Interface

The printer can be reset using interface pins 6 and 25 by changing the DIP switch setting.

To reset the printer, the following requirements must be satisfied.

❏ DC characteristics:

Reset switching

Signal Line DIP Switch Reset Condition

Pin 6 (DSR) DSW 2-7: ON MARK level input

Pin 25 (INIT) DSW 2-8: ON SPACE or TTL-HIGH level input

Reset DC characteristics

Pin 6 (DSR) Pin 25 (INIT)

Reset active voltage V

-15V ~ -3 V +2 to +15 V

Reset negative voltage V

+3 V ~ +15 V -15 to + 0.8 V

Reset active current I

-5.3 mA (maximum) 1 mA (maximum)

Reset negative current I

5.0 mA (maximum) -2 mA (maximum)

Input impedance R

3 K

Ω

(minimum)

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 153 154

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Epson TM-T88II Series Manual de Instruções Página 29