Configurations; Interfaces; Serial Interface - Epson TM-T90 Specification

Confidential

2. CONFIGURATIONS

2.1 Interfaces

2.1.1 RS-232 Serial Interface
2.1.1.1 Specifications
Data transmission:
Synchronization:
Handshaking:
Signal levels:
Baud rate:
Data word length:
Parity settings:
Stop bits:
Connector (printer side):
NOTES: • The handshaking, data word length, baud rate, and parity depend on the DIP switch
settings. (Refer to Section 3.3.3.) or the memory switch. (Refer to the GS ( E
command.)
• The stop bit from the printer side is fixed to 1.
2.1.1.2 Switching between online and offline
The printer does not have an online/offline switch.
The printer goes offline:
1) Between when the power is turned on (or the printer reset using the interface) and when the
printer is ready to receive data.
2) During the self-test.
3) When the cover is open.
4) During paper feeding using the paper FEED button.
5) When the printer stops printing due to a paper-end (in cases when an empty paper supply is
detected by either the paper roll end detector or the paper roll near-end detector with a printing halt
feature due to a paper-end set by ESC c 4).
6) During standby status for macro execution.
7) When a temporary abnormality occurs in the power supply voltage.
8) When an error has occurred.
EPSON
Serial
Asynchronous
DTR/DSR or XON/XOFF control
MARK = -3 to -15 V:
SPACE = +3 to +15 V:
2400, 4800, 9600, 19200, 38400, 57600, 115200 bps
(bps: bits per second)
7 or 8 bits
None, even, odd
1 bit or more
Female DSUB-25 pin connector
TITLE
TM-T90
Specification
(STANDARD)
Logic "1"/ OFF
Logic "0"/ ON
SHEET NO.
REVISION
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