TDK-Lambda Genesys Series User manual

TECHNICAL MANUAL
LAN INTERFACE for
GENESYS™ POWER SUPPLIES
Document: IA672-04-01 Rev. D
IA672-04-01-Rev. D
CONTROLLED COPY
19.01.09
N.L.I. R&D

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Table of Contents
1. GENERAL INFORMATION ........................................................................ 1
1.1. INTRODUCTION............................................................................................1
1.2. FEATURE SUMMARY ...................................................................................2
1.3. GLOSSARY....................................................................................................3
1.4. REQUIRED ACCESSORIES .........................................................................4
2. SPECIFICATIONS...................................................................................... 5
2.1. POWER SUPPLY SPECIFICATIONS ............................................................5
2.2. LAN OPTION PHYSICAL DESCRIPTION .....................................................5
2.3. LAN FEATURES ............................................................................................6
3. GETTING STARTED .................................................................................. 9
3.1. SELECT THE INTERFACE ............................................................................9
3.2. SETUP THE LAN COMPUTER....................................................................10
3.3. SETUP THE LAN POWER SUPPLY............................................................ 11
3.4. CONNECTING WITH THE WEB PAGE....................................................... 11
3.5. IP ADDRESS OVERVIEW ...........................................................................12
3.6. HOSTNAME OVERVIEW.............................................................................12
3.7. TROUBLESHOOTING THE WEB CONNECTION.......................................13
3.8. OTHER TROUBLESHOOTING....................................................................14
3.9. CONNECTING OVER WAN.........................................................................16
3.10. CONNECTING WITH VISA PROGRAMMING.............................................16
4. LAN SETUP ............................................................................................. 17
4.1. VIEW THE IP AND MAC ADDRESSES .......................................................17
4.2. LAN RESET BUTTON..................................................................................17
5. USING THE WEB PAGES ....................................................................... 19
5.1. OVERVIEW..................................................................................................19
5.2. HOME PAGE................................................................................................19
5.3. LOGGING IN................................................................................................20
5.4. DC POWER PAGE.......................................................................................21
5.5. LAN PAGE....................................................................................................23
5.6. HELP PAGE .................................................................................................28
6. REMOTE PROGRAMMING USING COMMANDS .................................. 29
6.1. OVERVIEW..................................................................................................29
6.2. VXI-11 COMPATIBILITY...............................................................................29
6.3. VISA COMPATIBLITY ..................................................................................29
6.4. SCPI COMPATIBILITY .................................................................................29
6.5. SOCKET PROGRAMMING..........................................................................30
7. SCPI COMMAND REFERENCE.............................................................. 31
7.1. COMMAND SYNTAX ...................................................................................31
7.2. CONFIGURING THE OUTPUT....................................................................32
7.3. MEASURING THE OUTPUT........................................................................33
7.4. OPERATING MODES ..................................................................................33

7.5. OUTPUT PROTECTION..............................................................................35
7.6. LAN SPECIFIC COMMANDS ......................................................................36
7.7. COMMON COMMANDS ..............................................................................38
7.8. ERROR AND STATUS COMMANDS...........................................................39
7.9. RS-485 MULTI-DROP COMMANDS............................................................47
8. SAMPLE PROGRAMS ............................................................................ 49
9. RS-485 MULTI-DROP CHAIN.................................................................. 51
9.1. Introduction ..................................................................................................51
9.2. Configure the LAN Supply............................................................................51
9.3. Connect and Configure the RS-485 Supplies ..............................................52
9.4. Multi-drop Programming Using SCPI Commands........................................53
10. SYSTEM:ERROR? MESSAGES ............................................................ 57
11. CUSTOMER SUPPORT........................................................................... 59
Table of Figures
Figure 1. Front Panel LAN Features.....................................................................1
Figure 2. Rear Panel LAN Features .....................................................................1
Figure 3. Rear Panel LAN Features .....................................................................5
Figure 4. Network Connection Diagram.............................................................. 10
Figure 5. Peer-to-Peer Connection Diagram ...................................................... 10
Figure 6. Error and Status Registers .................................................................. 42
Figure 7. Configuring a Multi-drop System of Supplies ......................................51

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1. GENERAL INFORMATION
1.1. INTRODUCTION
The Local Area Network (LAN) option for the GenesysTM series power supply allows the user
to remotely program, measure and check status of the power supply. It uses an Ethernet
connection like those used to connect computers to each other and to the Internet
A computer’s web page browser may be used to operate the power supply through a built-in
web page server. For applications including factory and test automation, communication may be
done using standard network protocols and instrument commands
Refer to the GenesysTM Technical Manual for information on installing the power supply, safety
requirements, specifications, connecting the power-in and out, operating the front panel, using
the serial (RS-232/485) programming and the analog (J1) programming
Figure 1. Front Panel LAN Features
Figure 2. Rear Panel LAN Features

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1.2. FEATURE SUMMARY
• Communicate over any standard TCP/IP network
LAN (Local Area Network)
WAN (Wide Area Network)
Communicate across the world using the Internet
• Web page viewable with any web page browser, such as Internet Explorer
Optional password protection prevents unauthorized operation
Program the output settings and protections
Measure the power supply output, view the power supply status
Configure the network connection settings
• LXI Class C
Conforms to LXI standards (revision 1.1) for network configuration
A “LAN Status” indicator shows when the network connection is established
“VXI-11 Discovery” protocol is implemented to search for connected devices
IVI-COM drivers are available for download
Easily write custom automation programs
• Full remote programming functions
Control and read-back of all settings
Full status and error reporting
Uses SCPI command language, an instrumentation standard
Compatible with VISA instrument drivers
(VISA drivers are available for almost any programming language)
Supports network “socket” programming
Same functional features as the IEEE option card.
• Front Panel features
View IP and MAC address on front panel
LAN Reset on front panel
User may remotely “Blink” the front panel to locate a power supply in a rack
• Rear Panel features
RJ-45 connector (standard 8-pin phone jack for LAN)
Link and Activity LED on RJ-45 connector
LAN Status LED shows LAN fault and is a 2nd “Blink Identify” on rear panel
A LAN/Serial (RS-232/485) select switch
• RS-485 Multi-drop Chain
Allows connecting up to 30 power supplies
One LAN IP address shared by all RS-485 power supplies
The LAN option is not needed in the RS-485 power supplies, but they must
be Multi-drop enabled
Trademark Notices
LXI is a trademark of the LXI Consortium Inc.
Microsoft and Windows are trademarks of Microsoft Corporation

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1.3. GLOSSARY
1.3.1. Auto-IP: This is when the power supply configures it’s own settings because they
cannot be obtained using DHCP. When forced into an auto-IP situation, the power
supply will select a random address in the range of 169.254.xxx.xxx
1.3.2. Auto-MDIX: An electrical connection that automatically detects either a patch (straight-
through) or a cross-over LAN cable. Either type of LAN cable is acceptable
1.3.3. Auto-Negotiate: The power supply will automatically choose the fastest speed that
the network can support. The Genesys™ power supply can operate at 10 megabits per
second (Mbps) or 100 Mbps
1.3.4. Command: A message sent to the power supply which changes one or more of it’s
settings. It may be sent using a SCPI command or from the web pages. No response
message is returned, but an error message may be created
1.3.5. DHCP: The Dynamic Host Configuration Protocol is a method where the IP address
and other settings are loaded from the network server to the power supply. This means
the IP address and other settings may automatically change each time the network
connection is created
1.3.6. Hostname: A unique name for a device on a network. A descriptive name may be
created by the operator. For the default hostname, see section 3.6
1.3.7. IEEE 802.3, 10BASE-T, 100BASE –T: These specifications define the physical
characteristics of a network including the cables and transmission speeds. Most often
have 8-conductor twisted-pair CAT-5 cables with RJ-45 connectors
1.3.8. Ethernet: The most common configuration for a LAN. It includes connection detection
and message collision protection
1.3.9. IP Address: The “Internet Protocol” address is a numeric identifier that says where
messages are sent to or received from. The IP address may be fixed or it may be
assigned a different value every time the power supply is turned on. It has four
numbers, each zero to 255. Example: 10.190.34.17
1.3.10. LAN: A “Local Area Network” is usually a small group of computers, printers and other
devices connected to share information and services. With a gateway, these devices
can also connect to a Wide Area Network (WAN)
1.3.11. LXI: “LAN Extensions for Instrumentation”. A standard adopted by many test and
measurement companies. To be LXI certified, an instrument must conform to many
requirements including network connectivity, web page operation and software drivers.
See http://www.lxistandard.org/home for details
1.3.12. MAC Address: The “Media Access Control” address is a identifier for the manufacturer
and the instrument. It is like a serial number and it may be used to configure the LAN
connection. It has six hexadecimal values.
Example: 00:19:f9:00:3e:26
1.3.13. Query: A message sent to the power supply which reads back a setting or a
measurement. A query does not change any settings. It may be sent using a SCPI
command or from the web pages

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1.3.14. RS-485: A communication bus used by the Genesys™ power supply for a multi-drop
system. One LAN supply controls a string of supplies that do not have the LAN option.
This bus uses a 4-wire twisted pair cable through the J3-IN and J3-OUT connectors
1.3.15. SCPI: The ”Standard Commands for Programmable Instrument” is a structure of text-
based commands. For example, for any SCPI compliant instrument that has a volt
meter, it will return a voltage measurement with the “MEAS:VOLT?” query
1.3.16. Subnet Mask: A number that divides an IP address into two sections; one for the
network identifier and one for the LAN instrument on the network
1.3.17. VISA: The “Virtual Instrument Software Architecture” is a single interface library for
controlling instruments over many types of communication busses. In an automation
program, a “resource descriptor” string is given for each instrument. The descriptor
defines the instrument including it’s address and bus type
1.4. REQUIRED ACCESSORIES
1.4.1. LAN Cable
The LAN cable must be supplied by the customer. It may be a standard straight “patch”
CAT-5 (or better) network cable or it may be a “crossover” cable where the pins are
reversed on one end. The cable type is auto-detected by the power supply
The serial link cable (0.5 m long) provided with the Genesys™ power
supply cannot be used for a LAN connection
1.4.2. Web Browser with Java Runtime Engine
To operate the web pages from a web browser, such as Microsoft Internet Explorer or
Netscape Navigator, the Java runtime engine must be installed on your computer. The
engine may be downloaded from:
www.java.com Java is a trademark of Sun Microsystems
1.4.3. NetBIOS for Hostnames
If, instead of the IP address, you want to use the power supply’s hostname to open a
network connection, your computer must be running the NetBIOS naming protocol
1.4.4. VISA Drivers for Programs
If you are writing custom test or automation programs for the Genesys™ LAN power supply,
the programs must operate using the VXI-11 with RPC protocols. This is most easily done
by using VISA drivers. These drivers allow you to easily send SCPI commands in many
programming languages and in several operating systems
VISA drivers are available from many instrumentation companies. The drivers are usually
included with their hardware or software products, or they may be purchased separately

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2. SPECIFICATIONS
2.1. POWER SUPPLY SPECIFICATIONS
When using the LAN, the power supply ratings and accuracies are the same as for the digital
remote programming using RS-232 or RS-485. See the Technical Manual for Genesys™ Power
Supply for those specifications
2.2. LAN OPTION PHYSICAL DESCRIPTION
The power supply rear panel, with the LAN option installed, is shown below.
Figure 3. Rear Panel LAN Features
2.2.1. LAN Enable Switch: This two-pole DIP switch allows you to select the LAN or the
RS-232/485 mode. The switch on the left is the only one used
The supply’s AC power must be OFF to switch between the LAN and RS-232/485
modes. The change is only detected during the supply’s power-up sequenc
−SWITCH UP: select the LAN mode. The power supply shows “LAn” at power-up. The
rear panel J3-IN port for RS-232/485 does not operate. The J3-OUT port may be used to
start a multi-drop chain of supplies (see section 9)
−SWITCH DOWN: select the RS-232/485 mode. The power supply does not show “LAn”
at power-up. The rear panel J3 ports for RS-232 and RS-485 do operate. The power
supply may be used in a chain of multi-drop supplies (see section 9). See the Technical
Manual for the Genesys™ Power Supply for the description of the RS-232/485 mode

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2.2.1. Link and Activity LED: this small LED, embedded in the RJ-45 socket, glows green
when the connection is made to an active network and it blinks when any message
packets are detected
2.2.2. Collision LED: this small LED, embedded in the RJ-45 socket, blinks amber when the
LAN packets are corrupted by collisions
2.2.3. LAN Status LED: This is a two-color LED to the left of the RJ-45 connector. It shows:
−Normal Operation: Steady green. The power supply has an active LAN connection
−Device Identify: Blinking green. The identify function is turned on from a remote
computer using the web page or a SCPI command. The front panel blinks along with
the rear. It is used to identify one power supply in a rack of instruments. The blinking
is turned off by the web page, by sending another SCPI command, or by changing any
front panel control
−LAN Fault: Steady red. Turns on to show the LAN connection was never made, or that
the LAN connection was made and then broken
2.3. LAN FEATURES
2.3.1. Ethernet
Meets the requirements of the IEEE 802.3u specification
2.3.2. Auto-Negotiate
May be used with 10Base-T or 100Base-T networks (10 or 100 Megabits per second). The
fastest compatible speed is automatically selected (unless disabled by the web page)
2.3.3. Auto-MDIX
Automatically detects if LAN cable is a patch (“1-to-1”) or cross-over cable. Either cable may
be used
2.3.4. MAC Address
Each power supply has a unique identifier which may be used to configure the LAN
connection. It is viewable from the supply’s front panel by holding the FOLD button. See
section 4.1 below
2.3.5. IP Address
This is the Internet Protocol address of a networked instrument. The IP addressing mode
may be set using the web page (section 5.5.2) or by the front panel LAN reset (section 4.2).
There are three modes for setting the IP address:
DHCP: The IP address is set by the network server when the power supply is first turned on
or connected
Auto-IP: If the IP address cannot be obtained from the network server, the power supply
uses an address in the range 169.254.xx.xx, where “xx” are numbers from 0 to 255
Static IP: The IP address is set by the web page and it does not change even after the
power supply is turned off and on

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2.3.6. TCP/IP Protocols
IPv4: conforms to Internet Protocol version 4
TCP: conforms to the Transmission Control Protocol for data packets over the network
HTTP: the Hyper Text Transfer Protocol is a communication protocol that enables web page
browsing over the network and the internet
ICMP / Ping Server: Response to another device’s ping requests (unless disabled by the
web page as described in section 5.5.4)
2.3.7. Remote Programming Protocols
VXI-11: This is a protocol that allows ASCII-based text communications to take place
between a controller and a device over a computer network. Supported messages are the
VXI-11 Device_write, Device_read and others
RPC: The Remote Procedure Call is a message protocol used to ensure the VXI-11
messages are processed correctly by the LAN interface
Sockets: Raw socket commands are available through port 8001. See section 6.5
VISA: The Genesys™ LAN interface is compatible with programs using VISA drivers. This
includes the viRead and viWrite functions for sending and reading SCPI messages
SCPI: The Standard Commands for Programmable Instrumentation is a command structure
for text-based commands. The Genesys™ LAN interface is SCPI 1999 compliant
2.3.8. SCPI Programming Functions
General: Almost any setting which may be done from the front panel may also be done over
the LAN using the web pages or a SCPI command. All settings made from the front panel
may similarly be read back.
Status and Errors: Command acceptance and power supply conditions may be checked
using the SCPI “SYSTEM:ERROR?” query or by using the IEEE-488.2 Status and Error
registers. See section 7.8
IEEE-488 Compatibility: The LAN SCPI commands are compatible with the IEEE-488
option for the Genesys™ power supply, except serial poll and service requests are not
supported in the LAN
2.3.9. Web Pages
Remote Control: Most settings which may be done from the front panel may also be done
remotely using the “DC Power” web page. Most settings made from the front panel may
similarly be read back
HTTP: The web pages use the Hyper Text Transfer Protocol. Any W3C compliant browser
program can view web pages sent using HTTP
Java: The browser program must have the Java runtime engine installed, see section 1.4.2
above
SCPI: A “Utility” web page allows you to send any SCPI command to explore how SCPI
works and to operate features not available in the other web pages. See section 7 for a
description of the SCPI commands

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3. GETTING STARTED
3.1. SELECT THE INTERFACE
The power supply, with the LAN option installed, may be operated through three interfaces. This
section describes how to enable each. Only one interface may be enabled at a time
MODE NAME MODE DESCRIPTION
1 Local Mode Control using the front panel encoders and buttons
2 RS-232 & RS-485 Control using the 3 or 4-wire serial digital J3-IN and
J3-OUT connectors. Also called serial mode
3 LAN Control using an Ethernet connection
The first two modes are described in the Technical Manual for the Genesys™ Power Supply
3.1.1. Select Local (Front Panel) Mode
The supply may be operated in the local, or front panel, mode even when a computer is
communicating over the LAN connection. There are, however, settings which may prevent
local operation
If the supply is in remote mode, the front panel “REM/LOC” LED is ON. The supply may be
returned to local by pressing and releasing the “REM/LOC” button
If the front panel “REM/LOC” button will not set the supply into local mode, then:
−If the LAN is being used to change settings, the supply will automatically go into remote
mode with every command. Stop the LAN program and then press “REM/LOC” button
−The LAN computer may have sent a Local Lockout command. Use the LAN to send
“SYST:SET LOC” (see section 7.4.2) or turn the supply AC off and on and then press
the “REM/LOC” button
3.1.2. Select RS-232 & RS-485 (Serial) Remote Mode
The RS-232 & RS-485 (serial) remote control may be selected even if the LAN option
is installed. The serial remote is described in the Technical Manual for the Genesys™
Power Supply. The LAN has the same capabilities as the serial remote, but the LAN SCPI
programming language is not compatible with the serial language (see section 7 for details
on the SCPI language)
To select the RS-232 & RS-485 mode:
A. Switch the supply AC power off
B. Set the LAN card switch pin1 to DOWN (see Figure 3)
C. For RS-232, set rear-panel SW1 pin 6 to DOWN. For RS-485, set SW1 pin 6 to UP
D. Switch the supply AC power on. The front panel will not show “LAn” at startup
3.1.3. Select LAN Remote Mode
Selecting the LAN mode will allow programming over the Ethernet cable. Any settings and
measurements may be done from a remote computer using the power supply’s built-in web
pages or using SCPI programming
The steps to use this feature are described in the next section

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3.2. SETUP THE LAN COMPUTER
3.2.1. Using a Network Connection
If the computer you are using is connected to a network server (as shown below), and the
Genesys™ power supply is connected using routers, switches or hubs, then no further
setup should be required for the computer
Network
Server
Ethernet
Hub
Genesys with LAN Option
Computer with Web Page Viewer or
VISA program for SCPI commands
Ethernet
Hub
CAT-5
Cables
(IP address is assigned using DHCP
or using static IP address)
Figure 4. Network Connection Diagram
3.2.2. Using a Peer-to-Peer Connection
It is possible to connect the Genesys™ power supply directly to a non-server computer (as
shown below). This is called a Peer-to-Peer connection
Genesys with LAN Option
Computer with Web Page Viewer or
VISA program for SCPI commands
CAT-5 Cable
(patch or cross-over)
(IP address is assigned using
an Auto-IP address in the range
169.254.xxx.xxx)
A second LAN card must be installed
in the computer to reach any other network
Optional
Ethernet Hub
To Ne t w or k a n d
Internet Gatewa
y
CAT-5 Cable
(patch only)
LAN0
LAN1 (Optional)
Figure 5. Peer-to-Peer Connection Diagram
By default, the power supply will create it’s own valid IP address through the auto-IP feature.
The auto-IP address will be in the form 169.254.xxx.xxx. If necessary, do a front panel
LAN reset (described in section 4.2) to ensure the auto-IP is selected

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By default, the computer’s network interface card (NIC) will also be DHCP/auto-IP, so if no
network server is detected, the computer will create it’s own valid IP address using the auto-
IP feature
If the computer and power supply both have auto-IP addresses, then the LAN connection
may be made by simply typing the supply’s IP address into a web browser as described in
section 3.4
3.3. SETUP THE LAN POWER SUPPLY
Start With a “LAN Reset”. When you are making the first LAN connection to a Genesys™
power supply, or are recovering from a connection problem, then it is recommended that you do
a “LAN Reset” on the power supply’s front panel (see section 4.2)
To start up the Genesys™ power supply with the LAN option enabled:
1. Turn OFF the power supply AC power
2. Set LAN card rear panel switch to UP (see Figure 3)
3. Connect an Ethernet cable from the power supply’s LAN connector to the network
(section 3.2.1) or to a computer (section 3.2.2). The cable to the power supply may be
wired as a patch cable (or straight-through) or as a cross-over cable
4. Turn ON the power supply AC power. See the front panel show “LAn” for about
3 seconds. After that, the supply will show “OFF” or the last output settings
5. In about 10 seconds (for DHCP and static IP), or 30 seconds (for auto-IP), see on the
rear-panel: (see Figure 3)
– The Link and Activity LED should be green to show the cable is connected. It may
blink to show messages are being sent on the network
– The Status LED should be steady green to show the supply has a valid IP address
3.4. CONNECTING WITH THE WEB PAGE
Once the power supply has been connected to a network and it is powered up, the power
supply may operated, and it’s LAN settings may be changed, by using the built-in web page.
The details of the web pages are described in section 5
1. Read the IP address from the supply’s front panel by holding the FOLD button (see
section 4.1 for details)
2. Open a web page viewer program such as Internet Explorer or Netscape Navigator. Type
the power supply’s IP address as shown below. Click the GO button
The power supply’s Home page will appear. If it does not, see section 3.7

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3. Alternately, if the power supply is set for “DHCP/Auto-IP”, and if NetBIOS naming service
is running on the computer, the hostname may then be used for addressing the web page
as shown below. See Section 3.6 for a description of the hostname
3.5. IP ADDRESS OVERVIEW
The simplest and most reliable way to open a network connection is with the power supply’s IP
address. This is a group of four numbers separated by periods (for example: 10.225.15.123).
This IP address may be viewed from it’s front panel (see section 4.1)
There are three modes which the power supply can get an IP address. Each mode has a
different way to set the IP address. This is shown in the table below
IP Address DHCP Auto-IP Static IP
Mode Select DHCP is default after
“LAN Reset”
Default after “LAN
Reset” if no DHCP
server is used
May be selected by user in the
“LAN Modify” web page (see
section 5.5.2)
Assignment Assigned by the
network server
Assigned by the power
supply
Assigned by the user
in the “LAN Modify” web page
(see section 5.5.2)
Range Any address 169.254.xxx.xxx Any address
Lifetime
Address may change
as the DHCP server
assigns addresses
dynamically to many
instruments
Fixed for the power
supply, except if an
address collision is
detected
Always fixed for the power supply
Duplicate
Addresses
The DHCP server
should prevent
duplicate IP addresses
Find another available
auto-IP address
Disconnect from the network and
indicate a LAN error
3.6. HOSTNAME OVERVIEW
The hostname is an address in the form of a text description for the power supply (for example:
GEN30-25-729). This address is less reliable than the IP address because the hostname
cannot be viewed from it’s front panel, and because a special naming service (NetBIOS) must
be running in the LAN computer

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After a “LAN Reset” is done (see section 4.2), the power supply will create a default hostname
based on the model and serial number of the supply
The default hostname is in the format:
< Product > < Voltage rating > – < Current rating > – < last 3 digits of serial number >
If the rating has a decimal point, substitute “p” for the decimal point. For example,
Model Serial Number Hostname
GEN8-180-LAN 28J4210 GEN8-180-210
GEN600-2.6-LAN 15M3229 GEN600-2p6-229
GENH12.5-60-LAN 37B12830 GENH12p5-60-830
The power supply may be set to one of three network modes. Each mode has a different way to
use the hostname. This is shown in the table below
Hostname DHCP Auto-IP Static IP
Default
Hostname
GENvv-aa-nnn
(see above)
GENvv-aa-nnn
(see above)
None, hostname
cannot be used
Hostname
Protocol Hostname by NetBIOS Hostname by NetBIOS None, hostname cannot be used
Hostname on
Web Pages
Shows IP address on
“Home” page
Shows hostname on
“LAN Configure” page
Shows IP address on
“Home” page
Shows hostname on
“LAN Configure” page
Shows IP address on
“Home” page
Hostname disabled on
“LAN Configure” page
3.7. TROUBLESHOOTING THE WEB CONNECTION
If the web page cannot be opened, here are some common troubleshooting steps
A. Verify the Ethernet Connection
Look at the rear-panel Link and Activity LED (see Figure 2). If it is not green or blinking,
then the Ethernet cable is bad or the other end is not connected to a working Ethernet
port
B. Verify the Supply’s IP Address
View the IP address by holding the “FOLD” button (see section 4.1).
If the power supply’s IP address stays at all zeroes, then the power supply never got a
valid IP address. This may happen when:
- You did not wait enough time. It takes 30 seconds to get an auto-IP address
- The power supply is set to static IP (see section 3.5) and there is an address
conflict with another instrument on the subnet
If the power supply is connected to a network, verify it’s address is in a range
acceptable to the network server
These problems are best solved by doing a power supply “LAN Reset” (see section 4.2)
and try to connect again

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C. Try to “PING” the Supply
The Ping utility verifies the computer can send a message and get a response from the
power supply over the network
On a Windows XP computer, open a command line window by:
1. Click the “Start” button, Select “Run…”
2. A “Run” window opens. Type: cmd <Enter>. See the command window open
3. Type “ping <IP address>” (IP from the supply front panel, see section 4.2).
Verify the ping packets had successful responses
If the “ping” does not get responses from the power supply, then there is a mismatch
between the power supply and the computer LAN settings. Also, the ping function may
be disabled in the power supply (see section 5.5.4). In this case, do a power supply
“LAN Reset” (see section 4.2) and try to connect again
D. Check the Computer LAN Settings
The computer LAN settings must be compatible with the power supply LAN settings
Since the default power supply setting is “DHCP/Auto-IP” (after doing a “LAN Reset”),
the computer’s network card should have the same setting
Refer to your operating system instructions on configuring the TCP/IP connection for
DHCP (also called, “Obtain an IP address automatically”)
3.8. OTHER TROUBLESHOOTING
3.8.1. Cannot Connect using Hostname
If the power supply’s IP address is set to “static IP”, you can not use the hostname address
To use the hostname address, the NetBIOS naming service must be running in your
computer or network server (shown below in the Windows XP “Local Area Connection
Properties”)
If the power supply has a static address or the computer is not running NetBIOS, then
hostname addressing may be used if you edit the “hosts” file in the network server.
In Windows XP, see the text file “C:\WINDOWS\system32\drivers\etc\hosts”
3.8.2. Cannot View Web Pages Over a Peer-to-Peer Network
If there is no gateway to a network, verify the proxy server is disabled in the web browser.
With Microsoft Internet Explorer, open the browser and, on the toolbar, navigate:
“Tools” ‡“Internet Options…” ‡“Connections” ‡“LAN Settings…”
and see the windows open:
Verify the “Proxy server” checkbox is NOT checked

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3.8.3. Cannot Open Web Page using Laptop or Dual-LAN Card Computer
If you have a computer with two network cards, the computer may not know which card to
use when trying to open the Genesys™ web page. Verify the two cards do not have over-
lapping IP address ranges, otherwise it may be necessary to disable or disconnect the
network card that is not being used
If you have a laptop computer with an Ethernet jack and a wireless network, it may be
necessary to disable the wireless LAN port
For running VISA programs (see section 6.3), two network cards is not a problem because
the VISA resource descriptor includes the network [board] identifier
3.8.4. The IP Address Changes to Zeroes
If a network connection is made, but then the connection is broken, check the IP address on
the front panel of the power supply (see section 4.1). If the IP address is all zeroes, then:
−The Ethernet cable connection may not be proper. Verify the Link LED is glowing (as
shown in Figure 2)
−If the power supply obtained it’s IP address from a DHCP server but that address was
not renewed
3.8.5. Web Page Fields Show as Little Blocks
For numeric fields, such as the voltage settings, if icons show instead of numbers, then
the Java Runtime Engine (JRE) may need to be installed on your computer. If the JRE is
already installed, a slow network connection can also create this situation. See section 1.4.2
for details
Also, in the web browser, you may have to enable Java scripts and Java applets. With
Microsoft Internet Explorer, do this by opening the browser and, on the toolbar, navigate:
“Tools” ‡“Internet Options…” ‡“Advanced” ‡“LAN Settings…”
and see the windows open:
Verify the “Use Java…” checkbox IS checked

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3.9. CONNECTING OVER WAN
To connect over the a Wide Area Network (i.e.: the global internet ), the following settings must
be made in the network server
In the Genesys™ power supply LAN interface, there are two servers. One web server is
listening in Port 80. The other, on port 8000, is an auxiliary to serve internal requests. The
network server has to ensure that both port 80 and 8000 are exposed to WAN connectivity. The
network administrator must obtain and assign a Global IP for the power supply. On the network
server, the network administrator also has to ensure that requests to port 80 and 8000 can be
used
3.10. CONNECTING WITH VISA PROGRAMMING
In addition to the web pages, the power supply may be controlled using test and automation
programs through VISA drivers and SCPI commands. See sections 6 and 7 for details