Epson DM-D210 Technical Reference Guide - Page 100

Number, Signal, Direction, Function, Make sure to use either the RTS or the DTR terminal. Otherwise

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Appendix Pin Signal Number Name 20 *1 DTR Signal Direction Output Function 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. 25 RESET Input Reset signal is connected to the DTR terminal of the TM printer directly. 1 Make sure to use either the RTS or the DTR terminal. Otherwise, the built-in RS-232 driver IC may be broken. 2 This signal is connected to the DTR terminal of the TM printer directly. 100

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Appendix
1 Make sure to use either the RTS or the DTR terminal. Otherwise, the built-in RS-232 driver IC may be broken.
2 This signal is connected to the DTR terminal of the TM printer directly.
20
*1
DTR
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.
25
RESET
Input
Reset signal is connected to the DTR terminal of the TM printer directly.
Pin
Number
Signal
Name
Signal
Direction
Function