M.2-COM-4SM Family of Four and Two-Port Multi-Protocol RS-232/422/485 M.2 Cards

Features

  • M.2 2260/2280 size with B & M keys and Latching I/O Connectors
  • Four- And Two-Port M.2 Serial Cards With Optional DB9M Connectivity
  • Four Software-Selectable Serial Types: RS-232, RS-422, And RS-485 (2Wire & 4Wire)
  • “SM” Models Support All 3 Serial Types. “S” Models Support RS-422 And RS-485
  • High Performance 16C950-Class UARTs With 128-Byte FIFO For Tx And Rx Buffering
  • Supports Data Communication Rates To 921.6Kbps In RS232 – As High As 3Mbps In Differential Modes – 10Mhz With Custom Crystal Option
  • Port-By-Port Field Selectable Termination For RS422 & RS485 Applications
  • Virtually Any Custom Baud Rate May Be Configured By The User Via Register Settings, No Custom Oscillator Needed
  • ±15kV ESD Protection On All Signal Pins
  • Supports CTS, RTS, And 9-Bit Data Mode, Half- and Full-Duplex communications
  • RoHS And Industrial Temp (-40°C To 85°C) Both Standard
  • Support for Wind River VxWorks (call for ordering information)
  • Designed, made, supported, and manufactured in the USA

$79.00$99.00

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Description

Four and Two-Port Multi-Protocol RS-232/422/485 M.2 Cards

The M.2-COM-4SM family of cards feature high performance 16C950-class UARTs. Available in 4-port and 2-port versions, each port is capable of communication speeds up to 921.6kbps in RS-232 (differential modes support speeds as high as 3Mbps) and has 128-byte deep transmit and receive FIFOs. Large FIFOs protect against data loss in multitasking operating systems, reduce CPU utilization, and improve data throughput, while reducing or eliminating inter-character or inter-packet pauses. The advanced integrated circuit with pre-scalar supports a wide variety of custom baud rates, and any rates not otherwise achievable can be supported via a custom factory-installed crystal oscillator (up to 10Mbps!).

RS-232, RS-422, or RS-485 can be software selected, per port, and the selection is stored in non-volatile memory for future use. If you don’t need that much flexibility you can order versions with only RS422/485 or even pure RS232. The RS232 ports provided by the card are 100% compatible with every other industry-standard serial COM device, supporting TX, RX, RTS, and CTS. RS422 mode uses the same transceivers as the RS-485 specification, allowing perfect 4-wire RS-422 and RS-485 compatibility – and the device supports full-duplex RS-485 4-wire.

Communication is possible either with custom application software, with off-the-shelf applications (such as HyperTerminal), or with provided samples and utilities, including WinRISC™ (“Windows Really Incredibly Simple Communication”).

The serial ports on the device are accessed using a low-profile, latching, 6-pin Hirose connector. Optional breakout cables are available, and bring each port connection to a panel-mountable DB9-M connector.

Applications

  • Health and Medical Systems
  • Point of Sale (POS)
  • Automated Retail Kiosks
  • Embedded Systems
  • Traffic Systems
  • Factory Automation and Process Control
  • Retail
  • Hospitality
  • Gaming
  • Kiosks

Special Order

Please contact ACCES with your precise requirement. Examples of special orders would be custom oscillators, conformal coating, custom software or product labeling, and more. We will work with you to provide exactly what is required.

Accessories and Connections

Available accessories include 4 or 2-port DB-9 cable kits and screw terminal board for quick and easy connectivity, as well as 2mm and 2.5mm mounting hardware. The ADAP9 accessory provides a screw terminal connection to break out the RS232, RS422, and RS485 signals on the DB9M connector.

SOFTWARE

A complete driver support package is provided including an easy-to-use Windows terminal program for testing your COM ports. This simplifies the verification of proper COM port operation. The card installs as standard COM ports in all operating systems including DOS, Linux (including Mac OS X) and 32-bit and 64-bit Windows. Additional drivers may be available for a wide variety of operating systems including Windows CE, VxWorks, Windows Embedded Standard, IoT, and more. Please contact the factory for compatibility with your specific OS.

Downloads

Data Sheets

Software


Drivers and Downloads

Full list of available Downloads: Software Packages, Drivers, Manuals, and other documents

Information about our Free Software packages:

ACCES is proud to provide a full suite of software support with every Data Acquisition product. We are committed to supporting the most popular operating systems and platforms for our customers. Currently we are actively supporting XP -> 10, both 32 & 64 bit, including “Server 2008,” “Embedded,” and “Compact” flavors for all plug-and-play products including PCI, PCI Express, USB, and more. Many products continue to ship with support for additional operating systems such as DOS, Windows 95, 98, Me, NT4, and 2000.

Samples

Among the software we deliver with our products are sample programs in a wide variety of programming languages. These samples are used to demonstrate the software interfaces to our products — and many can be used as-is in your production environments, or to test functionality of the devices out-of-the-box. We’re currently actively supporting sample programs in Microsoft Visual C#, Visual Basic, Delphi, and Visual C/C++, with many devices including samples in Borland C/C++ 3.1 for DOS. Additionally we provide National Instruments LabVIEW compatible DLLs and many demonstration VIs for our devices.

Drivers

Drivers for various operating systems are also provided, including active support for Windows XP -> 10 — all in both 32-bit and 64-bit flavors, and including consumer, server, and embedded varieties — as well as the 2.6 and newer Linux kernels and recent OSX / macOS versions. Many products continue to ship with driver support for Windows 95, 98, Me, NT4, and Windows 2000, but support for these operating systems is considered deprecated.

Setup Programs and Utilites

Our Data Acquisition devices also include a graphical setup utility that walks you through the process of configuring any option jumpers or switches on the device, as well as explaining a little about the various connectors present.

Many devices also include utility programs – little tools to make your use of the device easier, such as EWriter, a program that allows you to read and write data in the user-accessible EEPROM locations on all our USB data acquisitition products; or WinRISC, a “Really Incredibly Simple Communications” terminal program that lets you get started instantly with serial devices.

“Register Level” Documentation

Besides all this software in all these languages and operating systems ACCES has a policy of open and transparent development: none of our lowest-level “register” interfaces are hidden from you — we document every register in every bus card, every command in every serial board, and every usb control transfer in every USB Data Acquisition board. These lowest-level interfaces allow you to develop for our products in ANY operating system or language, regardless of our actively supporting it or having a driver for it. We have customers actively developing in ADA, Android, Python, Java, MATLAB, Solaris, and more, just by referring to our complete low-level interface documentation! And we provide the full source code to all of our drivers, regardless of operating system, to give you an even bigger head start in your own development tasks.

No Fees or Royalties

All of this software is provided at no additional charge, and is licensed under any of a variety of flexible — and royalty free — options. Check out our software license explanation if you’d like more information.


Custom Software

ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.

Further information about available ACCES Software:

Redistributing Windows Drivers
A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.


AIOSerial/VxWorks

ACCES has successfully partnered with Wind River to bring our entire line of PCI and PCI Express Serial Communication cards to VxWorks 7! All ACCES plug-and-play serial cards are now supported with our VxWorks driver, including RS232, RS422, RS485 (2- and 4-wire) and baud rates up to 10Mbps.

Designed as an update to the existing vxbPciNs16550Sio.c driver, we’ve added support for ×8 baud rates, proper handling of the unique register location of the 4th port in the Pericom PI7C9X7954 UART, and configuring the serial protocol from your application software.

With this driver suite all ACCES PCI, PCI Express, PCI Express Mini Card, M.2, PCI-104, PCIe/104, and all related “PCI Style” plug-and-play serial cards will detect and install as standard VxWorks SIO ports.

PC Interface

  • M.2 2260/2280 with B & M keys

Communications Interface

  • Connector
    • I/O: Hirose DF57 6-pin, latching
    • Mating: Hirose DF57H-6S-1.2C
  • Serial Ports: 4 (or 2) per-port software selectable RS422 & RS485, and/or RS232 depending on model
  • UART: Quad 16C950 with 128-byte FIFO for each transmit & receive buffer
  • Baud Rates: up to 921.6k baud in RS-232 up to 3MBaud in differential modes advanced-prescaler allows a wide variety of unusual baud rates to be achieved. Up to 10Mbps via custom crystal option.
  • Character length: 5, 6, 7, 8 bits (contact factory for assistance with 9-bit data)
  • Parity: Even, Odd, None, Mark, Space
  • Stop Interval: 1, 1½, 2 bits
  • Flow Control: RTS/CTS (RS-232 only), Xon/Xoff, None

Environmental

  • Operating Temperature: -40°C to 85°C
  • Storage Temperature: -65°C to 150°C
  • Humidity: 5% to 95%, non-condensing
  • Power required: +3.3VDC @ 1.6W (typical)
  • ESD Protection: ±15kV on all signal pins (IEC 61000)

Physical

  • Weight:6.4 grams
  • Size: length: 50.95mm (2.006″); width: 30.00mm (1.181″)

Regulatory Compliance

  • This product is designed to be in full compliance with CE requirements.
ModelDescriptionPrice (USD)
M.2-COM232-2Two-Port RS-232 M.2 Card$79.00
M.2-COM-4SMFour-Port Multi-Protocol RS-232/422/485 M.2 Card$99.00
M.2-COM-2SMTwo-Port Multi-Protocol RS-232/422/485 M.2 Card$89.00
M.2-COM-2STwo-Port Multi-Protocol RS-422/485 M.2 Card$84.00
M.2-COM-4SFour-Port Multi-Protocol RS-422/485 M.2 Card$94.00
M.2-COM232-4Four-Port RS-232 M.2 Card$89.00

OEM and volume pricing available, please call us.

Accessories
CAB-M.2-COM4Four port DB9 male cable accessory kit $49
CAB-M.2-COM4-IP67Four port DB9 IP67 male cable accessory kit $call
CAB-M.2-COM2Two port DB9 male cable accessory kit $29
CAB-M.2-COM2-IP67Two port DB9 IP67 male cable accessory kit $call
ADAP9Screw terminal adapter (single DB9 female to 9 screw terminals) $19
M.2-HDW-KIT22mm mounting hardware kit $1