104-ICOM-2S
2 Isolated RS-422 or RS-485 Serial Ports on PC/104
Features
- 2 independent optically-isolated asynchronous serial COM ports
- Field selectable RS-422 and RS-485, independent for each port
- Auto-RTS feature makes half-duplex RS-485 communications effortless
- Fixed bias and jumper selectable termination provided on each transmit and receive channel simplifies cabling
- Speeds up to 115.2K
- Operates as a standard COM port in all operating systems
- RoHS Available. Please contact us for ordering information
- Factory Options: (call for pricing and availability)
- 16850 UART’s with 128-byte FIFO
- Speeds up to 460.8K
- 0 to 60 C and -40 to +85 C versions available
$229.00
In StockDescription
Isolated Multiprotocol (RS422/RS485)Serial Communications Card
The Model 104-ICOM-2S Serial Communications Card can be installed in a PC/104 stack and provide effective communication on long lines in noisy environments. Data lines are opto-isolated from the computer and from each other to assure communication even when large common mode voltages and noise are imposed.
By means of jumper placement on the card, each port can be setup for either RS-485 or RS-422 operation. RS-422 operation uses differential balanced line drivers for long range and high noise immunity. RS-485 operation improves on that by providing multi-drop capability for as many as 32 devices. RS-485 communication requires that one device on the network provide a bias voltage to ensure a known “zero” state when all transmitters are off. Also, receiver inputs at each end of the network should be terminated to avoid “ringing”. Both ports on the 104-ICOM-2S support those needs, bias is provided as a standard, and termination by means of jumper selection.
The card supports half-duplex and full-duplex communications in 2- and 4-wire cable connections. Half duplex allows traffic to travel in both directions, but only one way at a time. In full-duplex operation, data travels both ways at the same time. Most RS-485 communications use the half-duplex mode because only a single pair of wires needs to be used and installation costs are dramatically reduced. In RS-485 operation the driver must be enabled and disabled as needed to allow all cards to share a two wire or four wire cable. Auto-RTS control circuits on the 104-ICOM-2S enable the driver when data is to be transmitted. When transmission is complete, the driver is automatically disabled. The receiver at that port is disabled during transmission time and then enabled at the completion of data transmission.
Type 16550 UART’s are used. These include 16-byte FIFO buffers to protect against data loss in multitasking operating systems. The on-board crystal oscillator and supporting circuitry provides means for selection of standard baud rates up to 115,200. Up to 460,000 Baud can be achieved via a factory option.
Connections are made with the card’s serial ports via standard DB9 Male connectors (equipped with jack-screws to eliminate vibration worries in harsh environments and applications).
Standard 16550 compatible UART ensures compatibility with DOS, Windows XP -> 10, both 32 & 64 bit, Linux and all other major operating systems.
Downloads
Data Sheets
Manuals
Software
- 104-ICOM-2S Software Package (30.51 MB -- Last Uploaded 2024-10-14)
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 7 -> 11, 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, 2000, and XP.
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#, and Delphi, with many devices including samples in Visual Basic (5 and .NET), Visual C/C++, and 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 7 -> 11 — 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, Windows 2000, XP, and more, but support for these operating systems is considered deprecated.
Setup Programs and Utilities
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 acquisition 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.
Serial Ports
- Two shielded male D-sub 9-pin connectors compatible with RS-485 and RS-422 specifications.
- Character Length: 5, 6, 7, or 8 bits.
- Parity: Odd, even, or none.
- Stop Interval: 1, 1.5, or 2 bits.
- Serial Data Rates: Up to 115,200 baud asynchronous, 460,000 Baud optional.
- Asynchronous Communication Element: Type 16C550 UART which includes 16 byte FIFO.
- Receiver Input Sensitivity: ±200 mV differential input.
- Common Mode Voltage Rejection: +12V to -7V.
- Transmitter Output Drive Capability: 60 mA.
Environmental
- Operating Temperature Range: 0° to +60°C, (-40° to +85°C Optional)
- Storage Temperature Range: -50° to +120° C.
- Humidity: 5% to 95% RH, non-condensing.
- Power Required: +5VDC at 200mA typical, all outputs open
CE testing & approval must be done at the system level, in the designed enclosure, and is not done on individual boards.
| Model | Description | Price (USD) | |
|---|---|---|---|
| 104-ICOM-2S | Isolated Multiprotocol (RS422/RS485)Serial Communications CardThe Model 104-ICOM-2S Serial Communications Card can be installed in a PC/104 stack and provide effective communication on long lines in noisy environments. Data lines are opto-isolated from the computer and from each other to assure communication even when large common mode voltages and noise are imposed. By means of jumper placement on the card, each port can be setup for either RS-485 or RS-422 operation. RS-422 operation uses differential balanced line drivers for long range and high noise immunity. RS-485 operation improves on that by providing multi-drop capability for as many as 32 devices. RS-485 communication requires that one device on the network provide a bias voltage to ensure a known “zero” state when all transmitters are off. Also, receiver inputs at each end of the network should be terminated to avoid “ringing”. Both ports on the 104-ICOM-2S support those needs, bias is provided as a standard, and termination by means of jumper selection. The card supports half-duplex and full-duplex communications in 2- and 4-wire cable connections. Half duplex allows traffic to travel in both directions, but only one way at a time. In full-duplex operation, data travels both ways at the same time. Most RS-485 communications use the half-duplex mode because only a single pair of wires needs to be used and installation costs are dramatically reduced. In RS-485 operation the driver must be enabled and disabled as needed to allow all cards to share a two wire or four wire cable. Auto-RTS control circuits on the 104-ICOM-2S enable the driver when data is to be transmitted. When transmission is complete, the driver is automatically disabled. The receiver at that port is disabled during transmission time and then enabled at the completion of data transmission. Type 16550 UART’s are used. These include 16-byte FIFO buffers to protect against data loss in multitasking operating systems. The on-board crystal oscillator and supporting circuitry provides means for selection of standard baud rates up to 115,200. Up to 460,000 Baud can be achieved via a factory option. Connections are made with the card’s serial ports via standard DB9 Male connectors (equipped with jack-screws to eliminate vibration worries in harsh environments and applications). Standard 16550 compatible UART ensures compatibility with DOS, Windows XP -> 10, both 32 & 64 bit, Linux and all other major operating systems. | $229.00 |