Multi Printer
23
3.
Communication Interface
3-
1
RS-232C Serial Pin
3-
2
RS-485 Serial Pin (Optional)
3-
3
Current Loop Pin
Pin No
Signal
Direction
Description
2
RXD
Input
Receive data
3
TXD
Output
Transmit data
4
DTR
Output
This signal indicates whether the printer can
receive data or is not.
5
GND
-
Signal Ground
Pin No
Signal
Direction
Description
6
RTX+
Input/ Output
Data send-receive.
7
RTX-
Input/ Output
Data send-receive.
Pin No
Signal
Direction
Description
1
RXD
Input/ Output
Data send-receive.
5
GND
-
Signal Ground
Connector = D-SUB 9 MALE
Содержание YJ-390DA
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