Muratec MFX-2500 Field Engineering Manual page 451

RS-232C Interface
6.9.1 Attaching the RS-232C Interface
6.9.1.1 Unpacking
Included in the RS-232C Interface kit's carton box:
Y
RS-232C Interface board.................................................... 1
Y
Ferrite core ......................................................................... 1
Y
Screw.................................................................................. 2
Y
Operating instructions (includes setting-up instructions).... 1
Y
Software disk ...................................................................... 1
Y
Software operating instructions .......................................... 1
Be sure to save the module and packing materials for reshipment.
To connect between the fax machine and the computer, you need an extra RS-232C interface cable (see
the below).
6.9.1.2 RS-232C interface cable
The RS-232C interface port on the newly installed RS-232C interface has a DB-25 (standard 25-pin serial)
female receptacle which accepts a male DB-25 cable plug . The computer's port may have either a DB-25
or DB-9 (9-pin) receptacle. Please consult the interface's pin assignment on the below.
Note: Please see the computer's operating instructions about the serial interface port of the computer.
Pin assignment
Pin No. Signal code
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
20 DTR
Signal direction
25-pin type
The fax The computer
2 TXD 2 TXD
3 RXD 3 RXD
4 RTS 4 RTS
5 CTS 5 CTS
6 DSR 6 DSR
7 SG 7 SG
20 DTR 20 DTR
Signal name
Transmitted data Data signal sent from computer to the fax.
Received data The data sent to computer by the fax.
Request to send Signal for request to send data.
Clear to send Data Enable signal for data transmission from
the fax to the computer.
DCE ready Turning on always.
Signal ground Ground for signal.
DTE ready Data Terminal Enable — ready to communicate
9-pin type
The fax
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
20 DTR
6-97
Contents
The computer
2 RXD
3 TXD
4 DTR
5 SG
6 DSR
7 RTS
8 CTS
Options