User manual

Impact-E 3x series embedded computer user manual
Page 22 of 40
Serial Port COM1/2 Connector (D-SUB9 Male)
PIN NO. DESCRIPTION
TYPE RS-232 RS-422 RS-485
1 Data Carrier Detect ( DCDA # ) 422TX+ DATA+
2 Receive Data ( RXDA ) 422TX- DATA-
3 Transmit Data ( TXDA ) 422RX+
4 Data Terminal Ready ( DTRA # ) 422RX-
5 Ground ( GND )
6 Data Set Ready ( DSRA # )
7 Request To Send ( RTSA # )
8 Clear To Send ( CTSA # )
9 Ring Indicator ( RIA # )
NOTE: COM1:RS-232 Only; COM2:RS-232,RS422,RS485
DIO Connector ( D-SUB9 Female)
PIN NO. DESCRIPTION
1 Digital IN 0
2 Digital IN 1
3 Digital IN 2
4 Digital IN 3
5 Ground
6 Digital Out 0
7 Digital Out 1
8 Digital Out 2
9 Digital Out 3
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