Epson DM-D110 Series, Техническое справочное руководство

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DP-110/DP-210 Connector Specifications
This section explains the DP-110/DP-210 connector specifications.
Computer Interface Connector (Serial)
Type: D-Sub 25-pin connector
Pin assignments
Pin
Number
Signal
Name
Signal
Direction
Function
1 FG - Frame ground
2 TXD Output

Stand-alone connection:

Transmits data to the computer from the this product

Pass-through/Y-type connection:

Transmits data to the computer from the TM printer.
3 RXD Input Receives data from the computer.
(Computer -> This product)
4
*1
RTS Output This indicates whether the display is ready to receive data.
*2

[SPACE]: The display can receive data.

DTR goes to SPACE under the following conditions:

When the display first becomes ready to receive data after power on.

When the self-test has ended.

When the remaining space in the receive buffer becomes 50 bytes or
more after having been 40 bytes or less.

[MARK]: The display cannot receive data.

DTR goes to MARK under the following conditions:

The period from when power is turned on to when the display first
becomes ready to receive data.

When the self-test is executed.

When the remaining space in the receive buffer becomes 128 bytes or
less (buffer-full state).

When DSR MARK is on, if the TM printer is selected by a peripheral device
command.
6
*2
DSR Input Indicates whether the computer is ready to receive data.

[SPACE]: The computer is ready to receive data.

[MARK]: The computer is not ready to receive data.
7 GND - Signal GND
14
1 13
25