---
title: "14.1.3.1 Communication Port Pinout"
canonical: "https://manual.cimon.com/space/CCANVAS/4399693850/14.1.3.1%20Communication%20Port%20Pinout"
format: markdown
---
# <span style="color: #0747a6">**eXT04 / eXT07 / nXT07 Xpanels**</span>

> ℹ️ The same port is used for COM1 / COM2.

## RS-422/485 COM1

|  |  |  |  |
| --- | --- | --- | --- |
| **Connector** | **Pin No.** | **Name** | **Description** |
| ![image](media://74f79ca6-46e8-47b7-bf82-b8dfd75b74d7) | 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 |

## RS-232C COM2

|  |  |  |  |
| --- | --- | --- | --- |
| **Connector** | **Pin No.** | **Name** | **Description** |
| ![image](media://74f79ca6-46e8-47b7-bf82-b8dfd75b74d7) | 1 |  |  |
| 2 | RD | Receive Data |
| 3 | TD | Transmit Data |
| 4 |  |  |
| 5 | SG | Signal Ground |
| 6 |  |  |
| 7 |  |  |
| 8 |  |  |
| 9 |  |  |

> ℹ️ 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).

# <span style="color: #0747a6">**eXT10 / eXT12 / eXT15 Xpanels**</span>

## RS-422/485 COM1

|  |  |  |  |
| --- | --- | --- | --- |
| **Connector** | **Pin No** | **Name** | **Description** |
| ![image](media://0c816d51-d9bd-4d06-983e-443de25b849e) | 1 | RDB | Receive Data B |
| 2 | RDA | Receive Data A |
| 3 | GND | Ground |
| 4 | SDB | Send Data B |
| 5 | SDA | Send Data A |

## RS-232C COM2

|  |  |  |  |
| --- | --- | --- | --- |
| **Connector** | **Pin No** | **Name** | **Description** |
| ![image](media://bad1e251-db22-4e96-8ebb-e3bfc058ef1a) | 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-232C COM3

|  |  |  |  |
| --- | --- | --- | --- |
| **Connector** | **Pin No** | **Name** | **Description** |
| ![image](media://bad1e251-db22-4e96-8ebb-e3bfc058ef1a) | 1 |  |  |
| 2 | RD | Receive Data |
| 3 | TD | Transmit Data |
| 4 |  |  |
| 5 | SG | Signal Ground |
| 6 |  |  |
| 7 | RTS | Request To Send |
| 8 | CTS | Clear To Send |
| 9 |  |  |