NI GPIB-ENET/100
• Controls IEEE 488 instruments
anywhere on an Ethernet-based
T
CP/IP network
• Up to 14 GPIB devices can be
interfaced to each GPIB-ENET/100
• Shares GPIB equipment from several
network hosts
• Compatible with twisted pair
(10BaseT or 100BaseTX)
•
DHCP or manual IP address
assignment
• Maximum GPIB transfer rates
• More than 900 kbytes/s (IEEE 488.1)
• More than 1.2 Mbytes/s (HS488)
• GPIB-ENET/100 firmware code
contained in Flash EEPROM
for easy maintenance – no physical
EEPROM changes required
• External DC power supply
• Optional rack-mount and DIN
rail/wall-mount hardware
Ethernet GPIB Controller
Operating Systems
• Windows 2000/NT/XP/Me/9x
•
Mac OS X, Mac OS Classic
• Linux
• Solaris
• HP-UX
• Tru64 UNIX (Digital UNIX)
Recommended Software
• LabVIEW
• LabWindows/CVI
• Measurement Studio
Driver Software
• NI-488.2
Overview
Ethernet ports are a standard feature of today’s computers. Most of
these computers have operating systems with built-in TCP/IP network
software capability. The National Instruments GPIB-ENET/100
Ethernet-to-GPIB controller and NI-488.2 take advantage of this
network connectivity in instrument control applications. Using the
NI GPIB-ENET/100, networked computers can communicate with
and control IEEE 488 devices from anywhere on an Ethernet-based
TCP/IP network.You can use a GPIB-ENET/100 to share a single GPIB
system among many networked users or to control several test systems
from a single networked host computer.
r the GPIB-ENET/100 is available for a variety of
NI-488.2 f
operating systems. You can port application programs written for
other National Instruments GPIB interfaces for use with the
GPIB-ENET/100, without modifying the code. Additionally, you can
monitor data or control your instrumentation system with a Web
browser if you use NI-488.2 in combination with NI LabVIEW,
LabWindows/CVI, or Measurement Studio.
o
Description
IEEE 488 and Network Interface Details
The GPIB-ENET/100 uses TCP/IP protocols to convert a computer
with an Ethernet port into a GPIB Talker, Listener, and
Controller. The GPIB-ENET/100 implements the full range of GPIB
controller functions.
Network Details
The Internet Protocol (IP) uses the Internet to route information
among network nodes. The Transmission Control Protocol (TCP),
used on top of the Internet Protocol, guarantees correct, in-sequence
data between network hosts and devices.
Although you commonly use TCP/IP protocols on the Internet,
most TCP/IP users are not connected to the actual Internet.
Individual institutions and corporations have created their own
internal intranets to connect their computers, other network hosts,
and devices that use TCP/IP. The regional application depicted in
Figure 1 shows an example of both Internet and intranet applications.
nternet application example shows how a user on a workstation
he I
T
in a corporate facility can access a GPIB-ENET/100 installed in a
facility at another location. Within the corporate facility, an intranet
configuration connects workstations with other GPIB devices, such as
printers and plotters. You can share GPIB systems throughout a
building, a complex, a country, or around the world.
The GPIB-ENET/100 works with both 10BaseT (10 Mb/s) and
100BaseTX (100 Mb/s) networks. It automatically detects the type of
network available and communicates at the highest speed possible.
Ethernet GPIB Controller
Internet Application
The Internet
GPIB-ENET/100
GPIB-ENET/100
Device 1
Device 2
Workstations, PCs
Wor
kstation, PC
Device 1
Device 2
Ethernet
Etherne
t
GPIB-ENET/100
Device 1
Intranet Application
Workstations, PCs
Etherne
t
Etherne
t
Figure 1. Regional Application Configuration
Performance
The National Instruments GPIB-ENET/100 is a GPIB controller that
delivers high performance by combining:
• A high-performance 32-bit CPU
• Fast Ethernet controller
• A TNT family GPIB interface ASIC
• Substantial onboard buffer RAM
• Efficient firmware design
Typical sustained data throughput is more than 900 kbytes/s.
erformance is comparable to that of GPIB plug-in boards. Data
his p
T
transfer rates can vary substantially with the NI GPIB-ENET/100
because of the variable network traffic and the unique operating
characteristics each subnet displays.
Cabling
You can connect the GPIB-ENET/100 directly to 10BaseT or
100BaseTX networks using CAT 5 twisted pair Ethernet cables (see
Figures 2a and 2b). If you need to connect the GPIB-ENET/100 to a
different type of network, such as a coax network (10Base2), you can
add a converter to your setup. For example, you can place a coax-totwisted pair converter between the GPIB-ENET/100 and the coax
Ethernet tap.
You can also connect a GPIB-ENET/100 controller directly to a
c
omputer Ethernet port, without using an Ethernet hub, using an
Ethernet crossover cable (see Figure 2c).
Network Addressing
Each GPIB-ENET/100 receives a unique Ethernet hardware address
at the factory. This address is a 48-bit value used to specify the source
and destination of Ethernet packets. The TCP/IP protocols also
require an Internet address. The Internet address is a 32-bit value
used to locate a device on the network; the Internet address has no
relationship to the Ethernet address.
You can assign the Internet address to the GPIB-ENET/100
automatically or manually. If the network uses the DHCP protocol,
IB-ENET/100 au
the GP
tomatically configures its Internet address.
If DHCP is not available, you can use the NI Ethernet Device
Configuration utility to assign the Internet address manually (see
Figure 3a). Network parameters not assigned by DHCP are stored
in nonvolatile memory. After the Internet address has been assigned,
you can associate the address to a GPIB interface using Measurement
and Automation Explorer (MAX), as shown in Figure 3b, and use the
same programs previously written for other NI GPIB interfaces.
Firmware
The necessary command interpretation, IEEE 488.2 and TCP/IP
protocol management, and system upkeep of the GPIB-ENET/100
are stored in Flash EPROM as an onboard firmware operating
system. Although code is installed at the factory, you can
easil
y upgrade the firmware by downloading new code to the
GPIB-ENET/100 memory. You can download the firmware at your
site with a special utility provided with NI-488.2. Firmware upgrades
ar
e instantaneous; you do not need to replace the physical EEPROM
inside the GPIB-ENET/100.
2
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
Ethernet GPIB Controller
Twi sted Pair Cable
GPIB-ENET/100
GPIB Cable
Twi sted Pair Cable
GPIB-ENET/100
GPIB Cable
Network Hub
Crossover Cable
GPIB-ENET/100
GPIB Cable
A. Standard Configuration for Intranet and Internet Applications
C. Isolated Network Using Crossover Cable
Figure 2. Network Cabling Configurations
A. Detect NI Ethernet-based controllers and assign their IP addresses or host names B. Associate the IP address or host name of the GPIB-ENET/100
B. Isolated Network Using Desktop Hub and Standard Twisted Pair Cabling
to a GPIB interface in Measurement & Automation Explorer
Figure 3. Easy Steps to Configure Your GPIB-ENET/100
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
3
Ethernet GPIB Controller
Ordering Information
Hardware
GPIB-ENET/100 and NI-488.2 for Windows 2000/XP
U.S. 120 VAC .......................................................................778209-01
Swiss 220 VAC .....................................................................778209-02
Australian 240 VAC.............................................................778209-03
Universal Euro 240 VAC .....................................................778209-04
North American 240 VAC ..................................................778209-05
United Kingdom 240 VAC..................................................778209-06
1
NI-488.2 for Windows 2000/XP available in English, Japanese, Korean, simplified
Chinese, and traditional Chinese.
Software
NI-488.2
Windows NT.......................................................................778220-02
Windows Me/9x ..................................................................778258-02
Linux....................................................................................778259-02
Mac OS X ............................................................................778251-02
Mac OS Classic....................................................................778257-02
Solaris ..................................................................................778256-02
HP-UX.................................................................................778377-02
Tru64 UNIX ........................................................................778378-02
Contact NI for availability with other OSs.
Cables
GPIB
X2 cable (double shielded)
1 m...................................................................................763061-01
2 m...................................................................................763061-02
4 m...................................................................................763061-03
8 m...................................................................................763061-04
1
Ethernet
CAT 5 twisted-pair 10/100BaseT cable (E1 cable)
1 m...................................................................................182219-01
5 m...................................................................................182219-05
10 m.................................................................................182219-10
CAT 5 twisted-pair crossover cable (E4 cable)
1 m...................................................................................187375-01
5 m...................................................................................187375-05
10 m.................................................................................187375-10
CAT 5 shielded twisted-pair 10/100 BaseT cable (E5 cable)
1 m...................................................................................189174-01
5 m...................................................................................189174-05
10 m.................................................................................189174-10
Additional Hardware Options
Rack-mount kit (single/dual case)..........................................187322-02
DIN-rail/wall-mount kit (single unit)....................................777972-01
BUY NOW!
For complete product specifications, pricing, and accessory
information, call (800) 813-3693 (U.S. only) or go to
ni.com/gpib.
Specifications
Ethernet Port
10BaseT or 100BaseTX
Ethernet address set at the factory
Internet address configuration by DHCP or by configuration utility
IEEE 488 Compatibility
Full-Function Talker, Listener, and Controller
IEEE 488.1 and IEEE 488.2 compatible
Handles all primar
Address is software selectable
Per
IEEE 488 interlocked handshake ...................... More than 900 kbytes/s
IEEE 488 non-interlocked (HS488) handshake .... More th an 1.1 Mbyte s/s
Physical
Dimensions....................................................... 21.0 by 12.4 by 3.7 cm (8.25 by 4.89 by 1.44 in.)
Weight ............................................................ 400 g (14.2 oz)
I/O Connectors
GPIB
Ethernet ............................................................ RJ-45
y and secondar
mance
for
............................................................
y addr
esses
IEEE 488 standar
d 24 pin
Network Specifications
Connection type ............................................... IEEE 802.3 compliant
Duplex mode .................................................... Half duplex
Power Requirement
9 to 30 VDC ...................................................... 425 mA maximum
............................................................
15 VDC
emperatur
onment
.......................................
e
Operating Envir
Ambient T
Relative humidity ............................................. 10 to 90%, noncondensing
Storage Environment
Ambient Temperature....................................... -40 to 100 °C
Relative humidity ............................................. 5 to 95%, noncondensing
Noise Emissions
FCC Class A verified
Compliance
Online at ni.com/hardref.nsf
10BaseT (10 Mb/s)
100BaseTX (100 Mb/s)
250 mA typical
0 to 65 °C
4
National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com
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