Connectors; Dm-D500 (Connector) - Epson DM-D500 Technical Reference Manual

Connectors

DM-D500 (Connector)

Pin assignments
Pin Num- Signal
ber Name
1 FG
2 TXD
3 RXD
4 DSR
5 DTR
6 SG
7 PS
8 PG
(*1) Regarding pass-through connection and stand-alone connection, see Chapter 1.
(*2) When DTR signal is set to MARK status by the ESC/POS status confirmation command, this status is different from that where the
signal indicates whether or not the display is ready to receive data.
Signal
Direction
- Frame ground
Output (1) In a Y or pass-through connection (*1)
Transmit data to the printer
(2) In a stand-alone connection
Transmit data to the host
Input Data received from the host computer
Input Indicates whether or not the host computer or printer is ready to receive data.
(1) In a pass-through connection (*1)
[MARK] The printer is not ready to receive data
[SPACE] The printer is ready to receive data
(2) In a stand-alone connection
[MARK] The host computer is not ready to receive data
[SPACE] The host computer is ready to receive data
Output Indicates whether or not the customer display is ready to receive data. (*2)
[MARK] The display is not ready to receive data
The display enters the MARK status in the following cases:
(1) During power-on initialization
(2) During self-test
(3) When the empty capacity of the receive buffer becomes 128 bytes or less (the
following case applies to pass-through connection only)
(4) When DSR enters the MARK status on printer selection
[SPACE] The display is ready to receive data
The display enters the SPACE status in the following cases:
(1) When power-on initialization finishes
(2) When self-test finishes
(3) When the empty capacity of the receive buffer recovers to 256 bytes or more from
128 bytes or less
- Signal GND
- Power supply terminal
- Return wire for power
Appendix A Hardware
Signal Function
65