User Manual 2056
MAN10xxx-01 53
Serial pin assignments
The following table lists the serial connector pin assignments and describes their respective
interface signals.
A.2.4 Ethernet Interface
10/100Base-T Ethernet interface can connect to 10/100M Ethernet.
Pin
No.
Signal
Direction
Description
1
Frame Ground (FG)
—
Printer’s chassis ground
2
Transmitted Data
(TXD/SD)
Out
Printer has transmitted serial data
3
Received Data
(RXD/RD)
In
Printer has received serial data
7
Signal Ground (SG)
—
Return path for data control signals
20
Data Terminal Ready
(DTR)
Out
Positive when the printer is ready to
receive data, and negative when the
printer is not ready
Figure A-3 Serial interface connector pin
Figure A-4 Ethernet interface
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