It has two main functions 1 Terminal Mode and 2 Monitor Mode. By selecting the Terminal tab the following screen will appear. We will be using the Terminal Mode to control, monitor, debug, and test the associated serial ports and SerialComm conversion products connected to the serial ports. This status bar shows which COM port is used and the selected attributes.
This status bar will also tell you whether the port is opened or closed. The upper menu bar is a horizontal menu of main functions available on AccessPort.
The "File" Category saves data and settings to a file, exports data and exits the program. The data from AccessPort can be exported to a file in Hexadecimal format. Specify the start location and stop location. There are some other parameters you can choose. The Hexadecimal formatted data can be exported to the clipboard or a file by choosing the appropriate option.
The "Edit" Category can undo a function, cut, paste and delete and select data in the output display box. These options control viewing of AccessPort.
It allows for the selecting of unselecting view sections of AccessPort for display. Changes the language of AccessPort. The "Monitor" category has functions to control the Monitor mode. The "Tools" category is a collection of some useful software tools.
Transfers a file. Select the file you want to transfer and press the "SEND" button. Configures the COM port and serial settings. The default view is the "General" configuration menu option. The "General" configuration menu option contains the main serial port settings and configuration. The "Custom Baud Rate" selects the baud rate data is being transmitted and received.
The baud rate is the speed in which the data is be transmitted. The supported baud rates range from bps to , bps. Standard baud rates are available from the dropdown menu in the Serial Port Settings section. Custom baud rates can be also entered by checking the "Enable" option and typing the custom baud rate. The "AutoSend" allows the output data to be continuously transmitted with a delay in ms at the end of each transmit specified by the Cycle value.
The "Advanced" can automatically open a port as soon as the application starts, or notify of any available updates. Check the "Event Control Settings" options you want to trigger an event. The "Flow Control" settings can be used if flow control is necessary. Flow control is not used by default. Input and Output timeout control settings are configured here using the "Read Timeout" settings and "Write Timeout" settings.
This is an advanced feature that will not be covered in the document. The dropdown looks like this. The "Operation" category is a collection of operational functions. The bottom status bar displays the TX count and RX count. These counts represent the number of bytes transmitted and received.
Reset Counter resets these counts to zero. The "Help" category is a collection of help related operations. Returns relevant information regarding AccessPort. The version and build numbers can be obtained from this page.
The input display box is where the data that is received by AccessPort is displayed. On top of the input display box is an icon toolbar with common data input functions. The output input box is where the data to be transmitted is typed in. The toolbar on topallows you to input data in Hex or Char format, plain text or hex string format and in real time or not. The bottom status bar shows the handshaking and flow control indicators of the comm status.
It also show the TX transmit and RX receive data counts and serial port settings. Two application examples will be presented demonstrating how AccessPort can be used to test our products. The first application is a simple loopback test of a single serial port or serial device.
The second application demonstrates the data communication between two serial ports or serial devices. In both examples the terminal modes will be used. A single port or device loopback test is a very useful way of determining whether a serial port, attached device, or converter is functioning properly. A loopback test can only be performed on other full duplex simultaneous bidirectional serial devices protocols.
Our fiber optic converters can be looped back by connecting fiber in to fiber out. RS is half duplex and cannot be single converter loop back tested. We will only need to open one instance of AccessPort since the looped back data transmitted will be received by the same port and be displayed in the output box of the same AccessPort.
Transmitting data from one COM port to other COM port using our converters is a useful test to determine whether the conversion protocol is functioning properly.
Data transfer between two RS converters can be performed to test half duplex RS with this test method. Some protocols are half duplex transfer data in one direction a time while others are full duplex transfer data in both directions at the same time. My Cart. Safety Assured Click for Testing Info. Satisfaction Guaranteed! After connecting a serial cable between the PC and the remote device or remote PC, in which case you must use a null-modem cable and configuring the port, you can send data by typing text in the transmit line and pressing the "Enter" key.
Any data that the remote device sends, will appear in the reception view. Optionally, the text that you transmit is copied to the reception view the option is called "local echo", you will find in in the dialog under the Settings button. To distinguish the received data from the echoed data, the echoed text is coloured blue, whereas the received data is green.
The remaining functionality is straightforward: the Clear button clears the reception view, the About button gives copyright information and the Close button terminates the utility. One "hidden" feature is the ability to disconnect the RS port, without terminating the utility. You can close an RS connection with a click in the status field in the upper left corner of the window left of the button bar.
Another click on that line re-opens the connection with the current settings. You can use this to "free" the port temporarily for another application. Click here to disconnect, or re-connect. To speed up entering repetitive commands, Termite keeps a history of recently sent commands. This history is in a circular queue with the most recent command at the top. To browse through the history, use the "arrow up" and "arrow down" keys.
If you type in a few characters in the "transmit" edit line, Termite will use the history to auto-complete the entry. Pressing the arrow up and arrow down keys then browse through the entries that match in the first letters. For example, if you have sent the words "test", "top", "view" and "set" previously, and you type the letter "t" on the edit line, Termite will first auto-complete this to either "test" or "top" depending on which word you sent last and the arrow keys will toggle between "test" and "top".
If you clear the edit line and then use the arrow keys, Termite will loop through the entire history of "test", "top", "view" and "set". Auto-completion is enabled by default, but can be disabled through the Settings dialog. By default, Termite scrolls its reception window so that the most recently received text is displayed. In case you want to look back at text that has scrolled out of the reception view, just scroll the text back into view.
Termite will stop to scroll to the end every time it receives new data. To make Termite restart with its automatic scrolling to newly received data, scroll the reception view manually to the end of the data. In other words, Termite only scrolls up text to show newly received data if it is already at the end of the current data.
Some additional functions are available from a pop-up menu that appears when you right-click in the reception view. The "Copy" command copies only the selected text to the clipboard if a selection exists, and copies all text in absense of a selection.
Likewise, the "Save" command saves only the selected text to a file if a selection exists and all text if no selection exists. This way, Termite remembers its settings between sessions. When distributing Termite, you may wish to include an INI file with pre-sets. A typical INI file is below. Most of these settings can be chosen from the " Settings " dialog. A few more configurations can be done by editing the INI file directly using a text editor like Notepad. The Caption item allows you to change the title bar of the main Termite window.
Add the item Caption below topic [Options] and set it to the string that you wish to have displayed —for example, the model name of the product for which you are distributing a pre-configured Termite. The items TxColour and RxColour allow you to change the colours for transmitted and received text from the default blue and green respectively.
The syntax for the colours must be rrggbb , where rr , gg and bb are two hexadecimal digits. So for example, FF is bright red and is dark yellow. Most RS settings for a device can be chosen by the developer the Baud rate and the number of data and stop bits are usually determined by the other device. One setting that the developer cannot foresee, however, is what COM port the user will attach it to. For this reason, Termite contains a "port lookup" function plus a simple "port scanning" protocol.
Since Microsoft Windows has drivers pre-installed for USB devices simulating a serial port, it is a popular design.
If using the device name of a serial port is not an option, for example, because your hardware has a real serial port instead of a virtual one, you can alternatively use the "port scanning" protocol. Port scanning chooses the first port for which the two following conditions hold:. Port scanning cannot be selected from the Settings dialog, you have to edit the INI file to activate it.
The tests for port scanning are primitive. They do not check what device or program is hooked at the other end. The only thing that you know after a port scan is that something is connected to the port and that no other program is currently using that particular port.
In the old days, it had become common practice to connect the DTR and DSR pins in the connectors of the cable sometimes even at both ends. This is bad practice, because with such cables you cannot even diagnose cable connection problems. Yet, such cables still exist, and the port scan may be fooled by it.
Termite presents you with a list of standard Baud rates, but it allows you to enter different values. The key issue is that the RS hardware must support the Baud rate that you select.
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