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TM-T81
Specification
(STANDARD) A
2.1.1.3 Interface connector terminal assi g nments and signal functions
Interface connector terminal assignm ents and signal functions are described in Table 2.1. 1.
Table 2.1.1 TM-T81 Printer Statu s 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 I nput This signal indicates whether the host computer can receiv e data.
SPACE indicates that the host computer can receive data, and MARK
indicates that the host computer cannot receiv e data.
When DTR/DSR control is selected, the pri nter transmits data after
confirming this signal (except when transmitting data by DLE EOT, and
GS a).
When XON/XOFF control is selected, t he pr i nter does not check this
signal.
Changing the DIP switch setting enables this signal to be used as a
reset signal for the printer. (See Secti on 3.3.3.)
The printer is reset when the signal remains MARK for
1 ms or more. (See Section 2.1.1.7.)
7 SG — Signal ground
20 DTR Output 1) When DTR/DSR control is selected, this signal i ndicates whether the
printer is busy. SPACE indicates that t he printer is ready to receive
data, and MARK indicates that the printer i s busy. The busy
condition can be changed by using DIP SW 2-1 as fol lows (See
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
Offline
7. When an error has occurred. — BUSY
8. When the receive buffer becomes full.(* 1) BUSY BUSY