XT04 / XT07 / XT08
The same port is used for COM1 / COM2.
RS-232C COM1
Connector | Pin No. | Name | Description |
 | 1 |
|
|
2 | RD | Receive Data | |
3 | TD | Transmit Data | |
4 |
|
| |
5 | SG | Signal Ground | |
6 |
|
| |
7 |
|
| |
8 |
|
| |
9 |
|
|
RS-422/485 COM2
Connector | Pin No. | Name | Description |
 | 1 | SDA | Send Data A |
2 |
|
| |
3 |
|
| |
4 | RDA | Receive Data A | |
5 | SG |
| |
6 | SDB | Send Data B | |
7 |
|
| |
8 |
|
| |
9 | RDB | Receive Data B |
※ The Xpanel Hybrid (7") uses only the COM1 port for communication (COM2 is used internally to communicate with PLCs). COM1 supports all three types of serial communication (RS-232/422/485).
XT10 / XT12 / XT15
RS-232C COM2
Connector | Pin No | Name | Description |
 | 1 | DCD | Data Carrier Detect |
2 | RD | Receive Data | |
3 | TD | Transmit Data | |
4 | DTR | Data Terminal Ready | |
5 | SG | Signal Ground | |
6 | DSR | Data Set Ready | |
7 | RTS | Request To Send | |
8 | CTS | Clear To Send | |
9 | RI | Ring Indicator |
RS-422/485 COM1
Connector | Pin No | Name | Description |
 | 1 | RDB | Receive Data B |
2 | RDA | Receive Data A | |
3 | GND | Ground | |
4 | SDB | Send Data B | |
5 | SDA | Send Data A |