Rs-232C Serial Port Pinout; Ethernet Connection Device - Brother MELSEC iQ-F TD-4420TN Program Reference Manual

2.2.1. RS-232C serial port pinout

Use a straight cable to communicate with the programmable controller.
Label printer
(D-sub 9P Female)

2.2.2. Ethernet connection device

Hub

Switching hub supporting 100BASE-TX (or repeater hub)
LAN cable

Category 5 cable supporting 100BASE-TX
RS-232C straight cable
(D-sub 9P Male)
Signal Pin No. Pin assignment
+V5 1
TxD 2
RxD 3
DSR 4
GND 5
DTR 6
N/C 7
RTS 8
N/C 9
(D-sub 9P Female)
Pin No. Signal
2
3
4
5 GND
6
7
8
8
MELSEC iQ-R Brother Label Printer Sample Program Reference Manual
FX5 expansion adapter
or FX5 expansion board
(D-sub 9P Male)
RxD
TxD
DTR Connect to CH1
DSR
RTS
CTS