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TM-T88
III
series
Specification
(STANDARD)
B
2.1.1.3 Interface connector terminal assignments and signal functions
Interface connector terminal assignments and signal functions are described in Table 2.1.1.
Table 2.1.1 TM-T88
III
Printer Status and Signals
Pin
number
Signal
name
Signal
direction
Function
1 FG
—
Frame
ground
2 TXD
Output
Transmit
data
3 RXD
Input
Receive
data
4
RTS
Output Same as DTR signal
6
DSR
Input
This signal indicates whether the host computer can receive data.
SPACE indicates that the host computer can receive data, and MARK
indicates that the host computer cannot receive data.
When DTR/DSR control is selected, the printer transmits data after
confirming this signal (except when transmitting data by
DLE EOT
, and
GS a
).
When XON/XOFF control is selected, the printer does not check this
signal.
Changing the DIP switch setting enables this signal to be used as a
reset signal for the printer (refer to Section 3.3.3).
The printer is reset when the signal remains MARK for
1 ms or more. (refer to Section 2.1.1.7)
7 SG
—
Signal
ground
20
DTR
Output 1) When DTR/DSR control is selected, this signal indicates whether the
printer is busy. SPACE indicates that the printer is ready to receive
data, and MARK indicates that the printer is busy. The busy
condition can be changed by using DIP SW 2-1 as follows (refer to
Section 3.3.3):
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 paper feed
button.
— BUSY
5. When the printer stops printing due to a
paper-end.
— BUSY
6. During macro executing standby status.
—
BUSY
7. When a temporary abnormality occurs in the
power supply voltage.
— BUSY
O
ffline
8. When an error has occurred.
—
BUSY
9. When the receive buffer becomes full.(*1)
BUSY
BUSY