RFI Emission OS-214plus Specifications download pdf (Page 29)

Interface Specifications

USB Interface

This is port complies with USB 2.0 Full Speed.

Connector Terminal Pin Assignment

Signal Description

VBUS 5V

D -

Differential data signaling

pair -

D +

Differential data signaling

pair +

GND Ground

3 4

USB series “B” Receptacle Interface

Serial

For the OS-214plus, the RS232 connector on the printer side is a

female, DB-9.

Pin Direction Definition

1 In DSR

2 In RxData

3 Out TxData

5 - Ground

6 Out DTR

7 Out RTS

8 In CTS

9 Out +5V

Note: Pin 9 on the OS-214plus is reserved for a KDU (keyboard

device unit). Do not connect these pins if you are using a

general host such as a PC.

Connection with host:

Host 25S Printer 9P

Host 9S Printer 9P

(PC or compatible) (PC or compatible)

DTR 20

……

1 DSR DTR 4 ……

1 DSR

DSR 6 ……

6 DTR DSR 6 ……

6 DTR

TX 2 ……

2 RX TX 3 ……

2 RX

RX 3 ……

3 TX RX 2 ……

3 TX

CTS 5 ……

7 RTS CTS 8 ……

7 RTS

RTS 4 ……

8 CTR RTS 7 ……

8 CTS

GND 7 ……

5 GND GND 5 ……

5 GND

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RFI Emission OS-214plus Specifications Page 29

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