COM 1 (CN 13) & COM 2 (CN 11) Serial Ports
On board offer two serial ports for serial devices connection. Pin definitions show as below.
COM 1
Pin | Signal | Pin | Signal |
1 | DCD1 | 2 | RXD1 |
3 | TXD1 | 4 | DTR1 |
5 | GND | 6 | DSR1 |
7 | RTS1 | 8 | CTS1 |
9 | RI | 10 | N.C. |
COM 2
Pin | Signal | Pin | Signal |
1 | RXD2 (422RXD+) | ||
3 TXD2(422TXD+/485DATA+) 4 | DTR2 | ||
5 | GND | 6 | DSR2 |
7 | RTS2 | 8 | CTS2 |
9 | RI | 10 | N.C. |
3 2 |