Comm Terminal For Os X

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HINT: Change your OS X terminal window size to 80x25 (1 line more) so you can see the bottom Minicom status bar. (Terminal Preferences ► Settings ► Window). Open a new window for this change to take effect. Note, the minicom installer creates /opt, and its not hidden in the OS X finder. A comm port area underneath the device keeps countertops free of clutter. The VX 520 operates at lightning speed thanks to a powerful processor and expandable memory. Integrated NFC/CTLS capabilities support alternative payments, as well as apps for loyalty programs and gift cards. Once you’ve determined which device you would like to use, you can execute the SCREEN command to start the serial terminal session on your Mac. Remember to specify the speed (baud rate) after the device name. Screen /dev/tty.usbserial-FTT3JMUZ 9600. Once you’ve connected, you can use the terminal as you normally would.

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Mac's are excellent tools for accessing serial device TTY ports (to console into PBX's, switches, and routers). You just need a serial to USB adapter, the right driver, and some Terminal software.
You can use screen, although Minicom (or a GUI program) offer more features and functionality.

Drivers:

Most Serial-to-USB adapters will work on a Mac with one of the following OS X drivers..
UPDATE: Mavericks (10.9) includes a driver for FTDI-based Serial-to-USB adapters.

Prolific PL2303:PL2303_MacOSX_1_6_0.zip
FTDI USB Serial:FTDIUSBSerialDriver_v2_3.zip
NOTE: It may be necessary to remove any previous driver before installing a newer one,
eg: $ sudo rm -rf /System/Library/Extensions/ProlificUsbSerial.kext

If your adapter doesn't work with either of these, try the following sources:

  • Silicon Labs - CP210x USB to UART Bridge Virtual COM Port (VCP) drivers.
  • Belkin - USB Serial Adapters: F5U257, F5U103, F5U003 (poor OS X support).
  • Keyspan serial-USB adapter drivers can be found in their Support Section.

After installing the correct driver, plug in your USB-Serial adapter, and open a Terminal session (Applications/Utilities).
Enter the command ls /dev/cu.*, and look for something like usbserial (or similar):

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This indicates the USB-Serial driver is working. Select this port name in a terminal program.

Note: Check your adapter works after an OS Update, as you may have to re-install the driver.

You might notice that each serial device shows up twice in /dev, once as a tty.* and once as a cu.*. So, what's the difference? Well, TTY devices are for calling into UNIX systems, whereas CU (Call-Up) devices are for calling out from them (eg, modems). We want to call-out from our Mac, so /dev/cu.* is the correct device to use.

The technical difference is that /dev/tty.* devices will wait (or listen) for DCD (data-carrier-detect), eg, someone calling in, before responding. /dev/cu.* devices do not assert DCD, so they will always connect (respond or succeed) immediately.

Software:

Having installed the right driver, our USB-Serial adapter will show up in /dev/cu.* (shown above). We now need to install some terminal emulation software before we can connect to anything.

Comm terminal for os x 10
  • Two terminal methods are Screen and Minicom
  • For a GUI solution, see OS X Serial Port Apps

Note: If you can't find a driver for your adapter (eg, Belkin), try Serial which has built-in support for many USB-Serial devices.

Comm Terminal For Os X 11

Screen

It's not actually necessary to download an install extra software, as you can use the Mac OS X built in Terminal and screen. Screen lacks some features, but it does include VT100/ANSI terminal emulation, and can be extremely useful.

  1. Open an OS X terminal session (window)
  2. Find the right TTY device. Type: ls /dev/cu.*

    3. With the USB-Serial adapter plugged in, you'll get a list, including something like this:

  3. Then type: screen /dev/cu.usbserial 9600 (in this example).

    4. The 9600 at the end is the baud rate. You can use any standard rate,
    eg, 9600, or 19200 for a Sig Server!
  4. To quit the screen app, type CTRL-A, then CTRL-.

Type man screen in Terminal for further information on screen. (use 'enter' or 'space' to scroll, and 'q' to quit).

Minicom

Alternatively, if you'd like a few more features, and a retro feel, you can install minicom 2.2.
Minicom supports VT100 emulation, which means it sorta kinda works with Meridian Mail (Function keys: fn + f-key).

  1. Download and run the minicom 2.2 package installer.
  2. Then manually edit your $PATH with sudo nano /private/etc/paths.
  3. Add the following line to the bottom of the file: /opt/minicom/2.2/bin, save and exit - then relaunch the terminal.

Run minicom -s first to configure your serial interface device name, and other options. Then, Save setup as dfl (default) and Exit. Your serial interface device name is found with ls /dev/cu.* (as shown above). Always launch minicom, with your selected serial adapter plugged in and available to avoid an error. In the example below, the serial device is /dev/cu.usbserial:

Configuration Options

Connected to Port

Command Summary

In minicom, commands can be called by CTRL-A <key>, for example, change your serial port settings with CTRL-A P
Press CTRL-A Z for a Command Summary, and help on special keys. Enter CTRL-A X to quit.

HINT: Change your OS X terminal window size to 80x25 (1 line more) so you can see the bottom Minicom status bar.
(Terminal Preferences ► Settings ► Window). Open a new window for this change to take effect.

Note, the minicom installer creates /opt, and its not hidden in the OS X finder. Rectify this with: sudo chflags hidden /opt

Connecting

With handshaking set to software (xon/xoff) or none, which covers most devices, serial data communication needs just 3 wires: RXD (2), TXD (3), and GND (5). Generally, hitting <enter> should cause a response, or <ctrl-r> should 're-draw' the screen. If you don't get any characters, try adding a Null-Modem cable or adapter, which swaps RXD and TXD (pins 2 and 3). Signal ground is Pin 5 in a DB-9, or Pin 7 in a DB-25.
Pin Functions for RS-232
Data
TXD(3)Serial Data Output
RXD(2)Serial Data Input
GND(5)Signal Ground
Other
RI(9)Ring Indicator
Handshake
RTS(7)Request to Send
CTS(8)Clear to Send
DSR(6)Data Set Ready
DCD(1)Data Carrier Detect
DTR(4)Data Terminal Ready
DB-9 Male

Front (pin) view

This is a list of notable terminal emulators. Most used terminal emulators on Linux and Unix-like systems are GNOME Terminal on GNOME and GTK-based environments, Konsole on KDE, and xfce4-terminal on Xfce as well as xterm.

Character-oriented terminal emulators[edit]

Unix-like[edit]

Command-line interface[edit]

  • Linux console – implements a large subset of the VT102 and ECMA-48/ISO 6429/ANSI X3.64 escape sequences.

The following terminal emulators run inside of other terminals, utilizing libraries such as Curses and Termcap:

  • GNU Screen – Terminal multiplexer with VT100/ANSI terminal emulation
  • Minicom – text-based modem control and terminal emulation program for Unix-like operating systems
  • tmux – Terminal multiplexer with a feature set similar to GNU Screen

Graphical[edit]

X11 and Wayland[edit]

Terminal emulators used in combination with X Window System and Wayland

  • xterm – standard terminal for X11
  • GNOME Terminal – default terminal for GNOME with native Wayland support
  • guake – drop-down terminal for GNOME
  • konsole – default terminal for KDE
  • xfce4-terminal – default terminal for Xfce with drop-down support
  • Terminator – written in Java with many novel or experimental features
  • Terminology[1] – enhanced terminal supportive of multimedia and text manipulation for X11 and Linux framebuffer
  • Tilda – a drop-down terminal
  • Yakuake – (Yet Another Kuake) a drop-down terminal for KDE
  • rxvt – lightweight terminal emulator
  • aterm (from rxvt 2.4.8) created for use with the AfterStep window manager (no longer maintained)
  • Eterm (from rxvt 2.21) created for use with Enlightenment
  • mrxvt (from rxvt 2.7.11) created for multiple tabs and additional features (latest version released in 2008-09-10)
  • urxvt (from rxvt 2.7.11) created to support Unicode, also known as rxvt-unicode
  • Wterm – created for NeXTSTEP style window managers such as Window Maker
macOS[edit]

Terminal emulators used on macOS

  • Terminal – default macOS terminal
  • iTerm2 – open-source terminal specifically for macOS
  • xterm – default terminal when X11.app starts
  • ZTerm – serial line terminal

Apple Classic Mac OS[edit]

Microsoft Windows[edit]

  • ConEmu – local terminal window that can host console application developed either for WinAPI (cmd, powershell, far) or Unix PTY (cygwin, msys, wsl bash)
  • HyperACCESS (commercial) and HyperTerminal (included free with Windows XP and earlier, but not included with Windows Vista and later)
  • mintty – Cygwin terminal
  • Windows Console – Windows command line terminal

Microsoft MS-DOS[edit]

  • Qmodem and Qmodem Pro

IBM OS/2[edit]

  • ZOC – discontinued support for OS/2

Commodore Amiga[edit]

Commodore 64[edit]

Block-oriented terminal emulators[edit]

Emulators for block-oriented terminals, primarily IBM 3270, but also IBM 5250 and other non-IBM terminals.

Coax/Twinax connected[edit]

These terminal emulators are used to replace terminals attached to a host or terminal controller via a coaxial cable (coax) or twinaxial cabling (twinax). They require that the computer on which they run have a hardware adapter to support such an attachment.

Comm terminal for os x 1
  • RUMBA 3270 and 5250

tn3270/tn5250[edit]

These terminal emulators connect to a host using the tn3270 or tn5250 protocols, which run over a Transmission Control Protocol (TCP) connection.

  • x3270 – IBM 3270 emulator for X11 and most Unix-like systems[2]
  • c3270 – IBM 3270 emulator for running inside a vt100/curses emulator for most Unix-like systems[2]

Comm Terminal For Os X 8

See also[edit]

References[edit]

  1. ^Schroder, Carla (November 16, 2017). '5 Coolest Linux Terminal Emulators'. Linux.com.
  2. ^ ab'x3270'.

External links[edit]

  • The Grumpy Editor's guide to terminal emulators, 2004
  • Comprehensive Linux Terminal Performance Comparison, 2007
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