IBASE Technology MB894, User Manual

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INSTALLATIONS
MB894 User’s Manual 17
CN3, J2, J15, J16: Serial Ports
Pin # Signal Name (RS-232)
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 Ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 RI, Ring indicator
10 No Connect.
CN3 is the D-sub type COM1 serial port connector, while J2 (COM2),
J15 (COM3) and J16 (COM4) are shrouded pin headers.
COM2 is jumper selectable for RS-232, RS-422 and RS-485.
Pin # Signal Name
RS-232 R2-422 RS-485
1 DCD TX- DATA-
2 RX TX+ DATA+
3 TX RX+ NC
4 DTR RX- NC
5 Ground Ground Ground
6 DSR RTS- NC
7 RTS RTS+ NC
8 CTS CTS+ NC
9 RI CTS- NC
10 NC NC NC
J3: Panel Inverter Power Connector
Pin # Signal Name
1 +12V
2 ENABKL
3 Ground