--- title: Create a tunnel with one device description: Download a terminal emulator Tera Term (recommended) Putty Hyperterminal Connect serial connector of device to PC - This can be done by connecting... --- [Skip to content](https://support.gridconnect.com/grid-connect/create-a-tunnel-with-one-device#main-content) [Submit a ticket](https://support.gridconnect.com/grid-connect/kb-tickets/new?hsLang=en) ![Grid Connect](https://support.gridconnect.com/hubfs/GridConnect_FullColorLogo-2024.svg) Open main navigation Close main navigation - [Submit a ticket](https://support.gridconnect.com/grid-connect/kb-tickets/new) How can we help you? - There are no suggestions because the search field is empty. 1. [Grid Connect](https://support.gridconnect.com/grid-connect?hsLang=en) 2. [Grid Connect Products](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en) 3. [Testing and Evaluation](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#testing-and-evaluation) # Create a tunnel with one device - **Download a terminal emulator ** - [Tera Term](https://ttssh2.osdn.jp/index.html.en) (recommended) - [Putty ](http://www.putty.org/) - Hyperterminal - **Connect serial connector of device to PC** - This can be done by connecting directly to a serial port or through a Serial/USB adapter - **Connect the RJ-45 to the PC -** You can connect directly to the PC or through a switch - **Run the terminal emulator and open a window to the com port that the serial line is connected to (The example below uses Tera Term)** - The PC's serial port will usually be Com 1 - The Com Port assigned to a serial to USB adapter can be found in Device Manager.  ![](https://support.gridconnect.com/hs-fs/hubfs/kb-migration/gridconnect/115014010368_mceclip0.png?width=390&height=231&name=115014010368_mceclip0.png) - **You will see a blank Com Window** ![](https://support.gridconnect.com/hs-fs/hubfs/kb-migration/gridconnect/115013920807_mceclip3.png?width=458&height=237&name=115013920807_mceclip3.png) - **Match the serial settings of the Com window to the serial/TCP adapter** - Setup/Serial port... - **Open a second window using telnet to the IP address and TCP port** **![](https://support.gridconnect.com/hs-fs/hubfs/kb-migration/gridconnect/115014010588_mceclip1.png?width=393&height=233&name=115014010588_mceclip1.png)** - **You should now have two open com windows with blank screens. When you type in one window it should appear in the other window. ** - You will not see the data appear in the window you are typing in. It will be sent out and immediately appear in the other window.  - Sending data from the TCP window to the serial window often requires pressing enter.   - [Grid Connect Products](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#main-content) - [Device Installer](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#device-installer) - [Com Port](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#com-port) - [GRIDBluFly](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#gridblufly) - [NET485-01](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#net485-01) - [Serial to Ethernet](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#serial-to-ethernet) - [Serial over Bluetooth](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#serial-over-bluetooth) - [xPort](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#xport) - [CAN](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#can) - [NET485-MB](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#net485-mb) - [WI232+](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#wi232) - [NET232+](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#net232) - [Testing and Evaluation](https://support.gridconnect.com/grid-connect/grid-connect-products?hsLang=en#testing-and-evaluation) - [Distributed Vendors](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#main-content) - [AKCP](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#akcp) - [ATC](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#atc) - [Chiyu](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#chiyu) - [Deutschmann Automation](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#deutschmann-automation) - [Equustek](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#equustek) - [PEAK System](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#peak-system) - [Profichip](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#profichip) - [Zcomax](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#zcomax) - [Procentec](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#procentec) - [Contemporary Controls](https://support.gridconnect.com/grid-connect/distributed-vendors?hsLang=en#contemporary-controls) - [General](https://support.gridconnect.com/grid-connect/general?hsLang=en#main-content) - [FAQ](https://support.gridconnect.com/grid-connect/general?hsLang=en#faq) - [RS232](https://support.gridconnect.com/grid-connect/general?hsLang=en#rs232) - [Support](https://support.gridconnect.com/grid-connect/support?hsLang=en#main-content) - [How To guides](https://support.gridconnect.com/grid-connect/support?hsLang=en#how-to-guides) - [FAQs](https://support.gridconnect.com/grid-connect/support?hsLang=en#faqs) - [Troubleshooting](https://support.gridconnect.com/grid-connect/support?hsLang=en#troubleshooting) [![Grid Connect](https://support.gridconnect.com/hubfs/GridConnect_FullColorLogo-2024.svg "Grid Connect")](https://www.gridconnect.com/) Copyright © 2026, Grid Connect