How To Test Com Port Windows 10

Resend the same information to a series port

In order to test whether the problem in your series network is fixed, you tin can reproduce the communication between a COM port and a serial app or device. Series Port Monitor will assist yous resend the exact same data to the required COM port so that you can review the reaction of your serial software or device.

All you need to do is:

1. Start or open a monitoring session;
2. Choose Session > Reproduce and configure the necessary parameters:
   • • Use port - specify a serial port that will be used in the reproduced communication.
     
   • • Send requests to this port - enable this choice if you desire to transport information to a serial port on behalf of a serial app.
     
   • • Respond as a device - enable this option if you want to send data to a serial port on behalf of a serial device.
     
   • • Preserve time intervals - utilize this selection if you'd like your information packets to be sent with the fourth dimension intervals.
     
   • • Custom IO timeout - choose this option to specify Read/Write timeout parameters.
3. Click 'Starting time'.

The solution differentiates from competitors in that information technology offers both a user-friendly GUI and a bunch of really outstanding features like built-in final, avant-garde filtering and search options, four convenient viewing modes, support for all types of series interfaces, including RS232, RS422, RS485, and more.

Also, with this app, yous will have the option of forwarding all monitored data to the specified file or copy the captured data to the clipboard.

Serial Port Tester is a stable utility that works as well with all versions of Windows OS, including Windows 10 (both x32 and x64). What'southward nifty is that all internal drivers of the app are digitally signed.

For RS-232 loopback exam, you need to connect the transmit (TXD) pin to the receive (RXD) pin. In the differential RS-422 and RS-485 communications, you should connect the TXD+ pin to the RXD+ and the TXD- to the RXD-.

If you need to perform a more advanced loopback test which volition let hardware menstruation control, you should connect the CTS and RTS pins to the DTR and DSR pins in RS-232 port, and CTS+ with to RTS+; CTS- with RTS- in RS-422 and RS-485 ports.

Below yous can see the pinout of a common serial connector, DE-9:

For a loopback exam with no hardware flow control (marked cherry-red in Fig. two,iii beneath), you connect:

• pins two and 3 for RS-232;
• pins four to 8 and 5 to 9 for RS-422/485.

For a loopback test with a hardware flow command (marked blueish in Fig. 2,3), you connect:

• pins 4 to 6 (DTR/DSR hardware flow control) and vii to 8 (RTS/CTS hardware flow control) for RS-232;
• pins 2 to 3 and vi to 7 for RS-422/485. Note that since RS-422/485 accept differential connections, both of these connections are needed.

The pin numbers are often engraved in the plastic of the connector. Here is how pins are called in DE9 connector of the RS-232 series port:

Loopback Test in HyperTerminal

HyperTerminal is a program that allows your PC to function as a calculator terminal and connect with other systems remotely. This program lets you interact with remote devices via a standard serial bus (RS-232) or using the telnet protocol.

As long as HyperTerminal supports data transfer via COM ports, you tin can utilise this plan to perform a loopback examination.

Here'due south how it works:

1. In the HyperTerminal you found a new connection and give it a name. Select the icon for your connectedness.
2. Specify the communications port that volition be tested.
3. Choose the type of flow command you lot'll use. Hither y'all have several options: Xon/Xoff, hardware, and none. Keep in heed that Xon/Xoff is a software flow command, then if choosing this choice, y'all only need the TXD and RXD pins to be continued.
4. Now, employ your keyboard to type a message. Whatever data that shows in Hyperterminal is received from the device.

HyperTerminal is a convenient way to exam you RS232 ports, but non the almost efficient one.

The express capabilities of this series loopback test app won't lead you to much success in controlling and debugging of your series communications. More than that, if y'all're going to use HyperTerminal on Windows 7 or 10, yous should remember that these Os versions back up only the private edition of the app, which is not free for commercial apply.

Source: https://www.eltima.com/article/how-to-test-serial-port/

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