IEI Technology WAFER-PV-D5252, User Manual, Page: 42 / 142

WAFER-PV-D5252/D4252/N4552 SBC
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Pin Description Pin Description
1 Data Carrier Direct (DCD) 2 Data Set Ready (DSR)
3 Receive Data (RXD) 4 Request To Send (RTS)
5 Transmit Data (TXD) 6 Clear To Send (CTS)
7 Data Terminal Ready (DTR) 8 Ring Indicator (RI)
9 Ground (GND) 10 N/C
11 12 TXD485#
13 14 RXD485#
Table 3-16: RS-232/422/485 Serial Port Connector Pinouts
3.2.15 RS-232 Serial Port Connector (COM3~COM6)
CN Label: COM
CN Type: 40-pin header
CN Location: See Figure 3-16
CN Pinouts: See Table 3-17
This connector provides RS-232 connections for four serial ports (COM3, COM4, COM5
and COM6).
Figure 3-16: RS-232 Serial Port Connector Location
Pin Description Pin Description
1 DATA CARRIER DETECT (DCD3) 2 DATA SET READY (DSR3)
3 RECEIVE DATA (RXD3) 4 REQUEST TO SEND (RTS3)
5 TRANSMIT DATA (TXD3) 6 CLEAR TO SEND (CTS3)
7 DATA TERMINAL READY (DTR3) 8 RING INDICATOR (RI3)