Rs-232C; Centronics - Toshiba B-FV4T-GS12-QM-R Owner's Manual

6.6.3 RS‐232C
The RS‐232C on the printer is DB9 female. It transmits data bit by bit in asynchronous start‐stop mode.
The figure below shows its pinout.
5
4
9 8
Pin Signal
1 N/A
2 RxD
3 TxD
4 N/A
5 GND
6 N/A
7 RTS
8 CTS
9 +5V
Note Pin 9 is reserved for KDU. Do not connect it if you are using a
computer as the host.
Host (DB9)
Signal Description
RxD Receive
TxD Transmit
DTR Data Terminal Ready
GND Ground
DSR Data Set Ready
RTS Request to Send
CTS Clear to Send
6.6.4 Centronics
The 36‐pin Centronics on the printer uses parallel communication, and complies with IEEE 1284
compatibility mode (also called SPP, Standard Parallel Port). The figure below shows its pinout.
3
2 1
7 6
Description
Shorted to Pin 6
Receive
Transmit
No Connection
Ground
Shorted to Pin 1
Request to Send
Clear to Send
Reserved for KDU (keyboard device unit)
Pin
2
3
4
5
6
7
8
Printer (DB9)
Pin Description
3 Transmit
2 Receive
1 Data Set Ready
5 Ground
6 Data Terminal Ready
8 Clear to Send
7 Request to Send
‐ 46 ‐
B‐FV700‐BLTH‐QM‐R
Signal
TxD
RxD
DSR
GND
DTR
CTS
RTS