![background image](http://html.mh-extra.com/html/national-instruments/enet-232-series/enet-232-series_manual_708976032.webp)
PCMCIA Kits
The PCMCIA serial hardware gives you a variety of solutions for serial
communication. The PCMCIA-232 interfaces work with the RS-232
protocol, and the PCMCIA-485 interfaces work with the RS-422 and RS-
485 protocols. You can use the RS-232 ports for serial communication up
to distances of 50 ft. You can connect the RS-485 ports to up to 31
devices using serial cable lengths up to 4,000 ft.
The PCMCIA-232 is available in one-port, two-port, and four-port
versions. The PCMCIA-485 is available in one-port or two-port versions.
All PCMCIA cards come with cables for each port that terminates in a
standard DB-9 connector. Throughout this help file,
PCMCIA serial
interfaces
refers to all versions of the interfaces.
The RS-232 ports are DTE. In the RS-232 specification, Data Terminal
Equipment (DTE) and Data Communications Equipment (DCE) refer to
the types of equipment on either end of a serial connection. In general,
DTE and DCE refer to computer equipment and modems, respectively.
For more information about cabling a RS-232 port to other devices, refer
to
.
The RS-485 ports support four hardware transceiver control modes for
reliable communication with two and four-wire devices. For more
information about transceiver control modes, refer to
All PCMCIA serial hardware uses standard 16550-compatible UARTs
(Universal Asynchronous Receiver/Transmitters) for complete
compatibility with standard PC COM ports. The serial hardware contains
FIFO (First-In-First-Out) buffers to reduce susceptibility to interrupt
latency for faster transmission rates. Full Plug and Play compatibility
allows switchless configuration and installation. For more information
about the serial hardware specifications and operating conditions, refer to
the
NI Serial Hardware Guide
.
Summary of Contents for ENET-232 Series
Page 1: ......
Page 5: ...Using Help Conventions Navigating Help Searching Help Printing Help File Topics ...
Page 21: ...Serial Hardware Overview PCI Kits PXI Kits USB Kits ENET Kits ExpressCard Kits PCMCIA Kits ...
Page 24: ...PCI 485I RS 485 two port isolated RS 485 four port isolated ...
Page 27: ...PXI 8423 RS 485 two port isolated RS 485 four port isolated ...
Page 63: ...Save Pending Changes To save your changes to this item click Save ...
Page 98: ...0 LPVOID l_SerialInterface sizeof l_SerialInterface LPDWORD l_ByteCount NULL ...
Page 127: ...2 PORT LEDs USB Serial Hardware LEDs ...
Page 139: ...Connecting the Cables to a Four Port PXI Serial Board ...
Page 141: ...67 58 50 41 33 24 16 7 TXD 9 RI 9 ...
Page 167: ......
Page 169: ......
Page 171: ......
Page 181: ...How many serial ports can I have on my machine You can have up to 256 serial ports ...
Page 201: ...Glossary Prefixes Symbols A B C D E F G H I K L M P R S T U V ...
Page 203: ...Symbols degrees ohms percent ...
Page 204: ...A A amperes ANSI American National Standards Institute ...
Page 205: ...B b bits B bytes baud bits per second bps bits per second ...
Page 208: ...E EIA Electronic Industries Association EMI electromagnetic interference ENET Ethernet ...
Page 209: ...F FCC Federal Communications Commission FIFO First In First Out ft feet ...
Page 210: ...G G ground ...
Page 211: ...H HSI handshake input HSO handshake output Hz Hertz ...
Page 213: ...K Kbaud kilobits per second ...
Page 214: ...L LED light emitting diode ...
Page 215: ...M m meters MB megabyte ...
Page 216: ...P PC personal computer PCI Peripheral Components Interconnect ...
Page 218: ...S s seconds SCSI Small Computer Systems Interface ...
Page 220: ...U UART Universal Asynchronous Receiver Transmitter ...
Page 221: ...V V volts VDC volts direct current VXI VME eXtensions for Instrumentation ...