A20 Hardware Guide
Serial
5-7
Datalogic Automation Inc.
Serial
Use serial cable Part # 606-0330-xx to connect the I/O terminal block’s serial port to a serial device (e.g. terminal, PLC,
motion controller, data recorder). A null modem connector or cable may be required between the I/O terminal block and
the controlled device.
You can also wire the 25-pin unterminated cable directly to the serial device using the wire colors in this table.
Pin Number
Signal Name
1
Carrier Detect (CD)
2
Received Data (RxD)
3
Transmitted Data (TxD)
4
Data Terminal Ready (DTR)
5
Signal Ground (GND)
6
Data Set Ready (DSR)
7
Request To Send (RTS)
8
Clear To Send (CTS)
9
Ring Indicator (RI)
9 Pin Male
(Pin Side)
Micro D Sub Connector
Pin Number
Wire Color
Signal Name
23
Brown/Red
Transmitted Data (TxD)
24
White/Black
Received Data (RxD)
25
Grey/Pink
Signal Ground (GND)
Pin 1
