ETOP PISA-E11 - COM1, 3, 4 Serial Ports; COM2 Serial Port

28 PISA-E11 User`s Manual
COM1, 3, 4 Serial Ports
COM1, COM2, COM3, COM4 a 10-pin header connector, is the
onboard COM1, COM2, COM3, COM4 serial port of the E11.
The following table shows its pin assignments.
COM2 Serial Port
COM2, a 10-pins box-header connector, is the onboard COM2 serial
port of the E11. The following table shows its pin assignments.
Pin #
RS232 Mode
Signal Name
RS422/RS485 Mode
Signal Name
1
DCD, Data carrier
detect
TX- (422/485)
2
RXD, Receive data
TX+ (422/485)
3
TXD, Transmit data
RX+ (422)
4
DTR, Data terminal
ready
RX- (422)
5
GND, ground
GND
6
DSR, Data set ready
N.C.
7
RTS, Request to send
N.C.
8
CTS, Clear to send
N.C.
9
+5V,Ring-IN or +12V
N.C.
10
N.C.
N.C.
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.
1
2
9
2
10
1
2
9
2
10