Epson TM-U200 Series Technical Manual

Rev. A Appendix 3
TM-U200 Series (Type A/AM) Technical Manual
Confidential
Notes:
❏ Receive buffer full state differs depending on the printer models. Refer to the specifications for the
printers.
❏ The data received is ignored when the space in the receive buffer is 0 byte.s
7 SG — Signal ground
8 RD1 O 1)When DTR/DSR is selected, this signal indicates whether the host
computer is BUSY or READY. DR1 > DR2 indicates the printer is READY and
DR1 < DR2 indicates the printer is BUSY. The BUSY condition can be
changed, depending on the off-line conditions set by the DIP switches.
When the DTR/DSR control is selected, the printer goes into the BUSY state
(DR1 < DR2) under the following conditions:
2) When XON/XOFF control is selected:
This signal indicates whether the printer is correctly connected and ready
to receive data. DR1 > DR2 (READY) indicates the printer is ready to
receive data. The signal is always DR1 > DR2, except in the following
cases:
❏During the period after the power is turned on until the printer is ready to
receive data.
❏During the self test.
10
11
CS1
CS2
I This signal indicates whether the host computer is BUSY or READY.
CS1 > CS2 indicates the printer is READY and CS1 < CS2 indicates the
printer is BUSY.
1)When DTR > DSR is selected:
The signal is checked and data is transmitted only when the host is ready
to receive data (READY), except for transmissions by
GS ENQ
,
DLE EOT
, or
GS a
.
2) When XON/XOFF control is selected:
Transmits data regardless of the status of this signal.
RS-485 interface connector pin assignments and functions
Pin number Signal name I/O Function
Conditions
DIP SW Settings
ON OFF
1. During the period from when power is turned
on (including resetting using the interface) to
when the printer is ready to receive data.
BUSY BUSY
2. During the self-test. BUSY BUSY
3. When the cover is open. — BUSY
4. During paper feeding using the paper FEED
button.
—BUSY
5. When the printer stops printing due to a
paper-end.
—BUSY
6. When an error has occurred. — BUSY
7. When the receive buffer becomes full. BUSY BUSY
Off line

Epson TM-U200 Series Specifications

General

Brand	Epson
Model	TM-U200 Series
Category	Printer
Language	English