EtherSeries EMB-02 User’s Guide
48
RS-232 PIN Assignments
The EtherSeries RS-232 port wiring is identical to a standard PC
9 pin DE-9P COM: port. It operates as a DTE device. The chart
below details signal directions and names.
Serial Port Pin Assignments
Pin Signal Name Type
1 Carrier Detect (CD) In
2 Receive (Rx) In
3 Transmit (Tx) Out
4 Data Terminal Ready Out
5 Signal Ground (GND) Power
6 Data Set Ready (DSR) In
7 Request to Send (RTS) Out
8 Clear to Send (CTS) In
9 Ring Indicator (RI) (Not used) In
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