ETOP ATX-E15, User Manual

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28 ATX-E15 User`s Manual
COM3 Serial Port
COM3, a 10-pins header connector, is the onboard COM3 serial port
of the E15. The following table shows its pin assignments.
Pin # RS232 Mode
Signal Name
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 Ring-IN
10
N.C.
COM4 Serial Port
COM4, a 10-pins header connector, is the onboard COM4 serial port
of the E15. The following table shows its pin assignments.
Pin # RS232 Mode
Signal Name
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 +5V,Ring-IN or +12V
10
N.C.