Specifications

Confidential
SHEET
25
NO.
SHEET
REVISION
H
TITLE
NEXT
26
TM-U590 series
Specification
(STANDARD)
Table 2.1.8 TM-U590 series Printer Status and Signals (Continued)
Pin Number Signal name Signal direction Function
When DTR/DRS is selected, this signal indicates whether
the host computer is BUSY or READY.
8
9
DR1
DR2
Output
1)DR1>DR2 indicates that the printer is READY and
DR1<DR2 indicates that the printer is BUSY. The BUSY
condition can be changed depending on the offline
conditions set by the DIP switches (refer to Section 3.3.3).
When the DTR/DSR control is selected, the printer
becomes the BUSY state (DR1<DR2) under the following
conditions.
DIP SW 2-1 status
Printer status ON OFF
1. During the period from when the 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
FORWARD/REVERSE button.
— BUSY
5. When a temporary abnormality occurs in
the power supply voltage.
BUSY
6. When an error has occurred.
BUSY
7. When the receive buffer becomes full.
BUSY BUSY
2)When XON/XOFF control is selected:
The signal indicates whether the printer is correctly
connected and is ready to receive data. SPACE indicates
that the printer is ready to receive data. The signal is
always DR1>DR2 (READY) indicates that the printer is
ready to receive data. The signal is always DR1>DR2
except in the following cases:
• During the period from when the power is turned on to
when the printer is ready to receive data
• During the self-test
Offline