5.4.2Connector pin assignment

Connector (cable side):

D-subminiature Cannon or Cinch DB-9 plug or an equivalent connector that conforms to EIA standards

Figure 5.11 shows the serial interface connector.

1

5

(Cable side)

6

9

(Male type)

 

Figure 5.11 Serial interface connector

Signal definition:

Table 5.3 lists RS-232C interface signals and their functions.

Table 5.3 RS-232C interface signals

Pin

Signal name

Direction

Description

number

 

 

 

 

 

 

 

1

RTS

Output

Request to Send

 

 

 

Space state when the printer is ready to transmit data

 

 

 

 

2

TD

Output

Transmitting Data

 

 

 

 

3

RD

Input

Receiving Data

 

 

 

 

4

DSR

Input

Data Set Ready

 

 

 

The printer can receive or transmit data when this signal is in the

 

 

 

space state.

 

 

 

 

5

SG

 

Signal Ground (common return)

 

 

 

 

6, 8

DTR

Output

Data Terminal Ready

 

 

 

Space state when the printer is ready to receive or transmit data

Notes:

1.The space state corresponds to the high level of the interface signal.

2.The direction (output or input) is viewed from the printer side.

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Fujitsu C145-C037-01EN manual RS-232C interface signals, Pin Signal name Direction Description Number, Rts, Dsr, Dtr