Epson TM-H5000II Series Manual page 33

CONFIDENTIAL
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-H5000II II II II series Printer Status and Signals
Pin No. Signal name Signal direction Function
1 FG
2 TXD
3 RXD
4 RTS
6 DSR
7 SG
20 DTR
— Frame ground
Output Transmit data
Input Receive data
Output DIP SW 2-2 OFF: Same as DTR signal (Pin 20)
DIP SW 2-2 ON: Logical product of DTR signals of DM-D and
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.
— Signal ground
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):
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.
2. During the self-test.
3. When the cover is open.
4. During paper feeding using the paper feed
switch.
5. When the printer stops printing due to a paper-
end. (only when the paper roll is not present)
6. During macro executing standby states.
7. When an error has occurred.
8. When the receive buffer becomes full.(*1)
TITLE
TM-H5000 II II II II series
Specification
(STANDARD)
TM (If both are SPACE, the printer can
receive data (SPACE).)
Printer status
NO.
SHEET
REVISION
NEXT
E
DIP SW 2-1 status
ON OFF
BUSY BUSY
BUSY BUSY
— BUSY
— BUSY
— BUSY
— BUSY
— BUSY
BUSY BUSY
SHEET
20
21