User manual | Application Note

Application Note
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APPLICATION
NOTE #
Connecting to a RadioRA System via a
Local Area Network
127
Overview
Home networks have become increasingly popular, often times providing connection to a Local
Area Netwok (LAN) from any room throughout the home. A LAN provides a convenient connection
point, allowing a PC to communicate to any device that resides on the network. This Application
Note covers how to place a RadioRA system on a Local Area Network, allowing convenient
real-time operation of the system from any network connection point. The LAN solution provided
involves using a low-cost Ethernet-to-RS-232 converter and Telnet to test the connection. After
testing the connection, other devices may be connected to the LAN to communicate with the
RadioRA system.
Equipment Requirements
Quantity
Equipment
1
RadioRA Serial Device (either a ChronosTM System Bridge and Timeclock, or an
RS-232 Interface)
1
IBM-compatible PC running Windows® 98, 2000 or XP, and one Network Interface
Card (NIC) with TCP/IP communication protocol enabled
1
Local Area Network (LAN) using TCP/IP communication protocol with two unused
live Ethernet connections (wall jacks, hubs, etc)
1
Digi® Digi One® SP Device Server with power supply and Software & Documentation
CD; available at www.digi.com
1
DB9F to DB9M Serial Cable (the same cable used to connect a PC to a RadioRA
Serial Device)
2
Ethernet patch cables
NOTE: The Digi One SP Device Server has been chosen for this Application Note based on its
ease of configuration and use. Other manufacturers’ device servers may also be used.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
RadioRA Device Setup
RS-232 Settings
Baud Rate:
Data Bits:
Parity:
Stop Bits:
Handshaking:
9,600
8
None
1
Hardware (RTS/CTS)
RadioRA ChronosTM System Bridge and Timeclock Setup
On the Chronos System Bridge and Timeclock Data Bits, Parity and Stop Bits are already set and
are not configurable. To set the Baud Rate to 9600 and turn on Hardware Handshaking perform
the following steps using the Chronos System Bridge and Timeclock LCD:
Step 1
Go to RS-232 Setup
Main Menu
RS-232 Setup
Serial Port Setup
Step 2
Set Serial Port Settings
Serial Port Settings
Baud Rate - - - - - -9600
Flow Control - - Hardware
Prompt - - - - - - - - ON
Error Reporting - - - OFF
Cancel
Done
Use
and
to change the value of the highlighted setting. Use
and
to move to the
next / previous setting.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
RadioRA Device Setup - continued
RadioRA RS-232 Interface Setup
On the RS-232 Interface Baud Rate, Data Bits, Parity, and Stop Bits are already set and are not
configurable. To turn on Hardware Handshaking perform the following steps using the RS-232
Interface Display:
Step 1
Begin hardware handshaking assignment
Simultaneously press and hold the UP and
Down buttons until the Select LED turns ON
and
appears on the display (approximately 3 seconds).
Step 3
Changing hardware
handshaking settings
Press the Assign button to turn hardware
handshaking ON.
ON
OFF
Step 4
Step 2
Set Serial Port Settings
Press and release the Select button
repeatedly until
appears on the display.
Complete hardware
handshaking assignment
Simultaneously press and hold the UP and
Down buttons until all the LEDs begin to flutter
(approximately 3 seconds).
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Digi One® SP Device Server Setup
1. After making sure that the device server came with both the power
supply and the installation CD, start the setup process by
setting/checking the DIP switches on the back of the device server.
DIP switch one should be up, and all others should be down, as shown
on the picture to the right. This should be the factory default setting.
2. Connect the power supply to the device server. All LEDs will initially
turn on and then back off as part of the power up sequence. After
approximately 12 seconds, the power LED will flash four times and
then turn off. After approximately 23 seconds, the power LED will
begin to continuously flash once a second. The flashing power LED
indicates that the power up sequence is complete and that the device
server's IP Address has not been assigned.
3. Connect one end of the first Ethernet patch cable to the RJ-45 connector on the device server
and the other end to the first live Ethernet connection. The Link LED should turn on and remain
on and the Activity (Act) LED should flash when link activity is sensed. The flash rate will vary
based on the type of LAN and the number of devices connected (anything from once every half
second to once every three seconds). Depending on the type of LAN, the power LED may stop
blinking once the Ethernet patch cable is connected, indicating that an IP Address has been
automatically assigned.
4. The last connection to make is the serial cable connecting the RS-232 Link on the RadioRA
Serial Device to the serial port on the device server. Verify steps 2-4 using the wiring diagram
below.
ChronosTM System Bridge
and Timeclock
RS-232 Interface
Line/Mains
Voltage
Receptacle
OR
Power Supply
Digi One SP
Device Server
Serial Cable
Ethernet
Patch Cable
Ethernet Wall
Jack
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Device Server Setup - Continued
5. In order to determine the IP Address of the PC that will be used to configure the device server,
the command prompt screen is needed. Connect the NIC to the second live Ethernet connection
with the second Ethernet patch cable. Refer to the Troubleshooting section of this Application
Note for instructions on opening the command prompt screen. In the command prompt screen,
type “ipconfig” and press the Enter key. The IP Address of the Ethernet adapter shown below is
192.168.2.240. Write down the IP Address of the PC that will be used to configure the device
server, for future reference. If the IP Address of the Ethernet adapter is 0.0.0.0 or the Subnet
Mask does not have 0 as its last digit, this needs to be corrected. Refer to Setting the PC’s IP
Address in the Troubleshooting section of this Application Note for more information.
6. Insert the Digi® Software & Documentation CD into the CD drive of the PC with the NIC. If the
CD does not start automatically, double-click My Computer > CD-ROM Drive. Once the Digi
splash screen appears, the Digi Device Setup Wizard should start automatically. If it does not,
click the setup icon on the splash screen, as shown below.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Device Server Setup - Continued
7. The Digi® Device Setup Wizard requires the MAC address of the device server. The MAC
address is located on the white label on the bottom or back of the device. In the device server
label shown below, the MAC address is labeled MA: 00409D2305D9. Locate the MAC address
of the device server before continuing.
8. The first step of the Setup Wizard is to locate the device server to be set up. The picture below
shows an unconfigured device server selected in the list of Found Devices. Note the MAC
address is the same as listed on the label above. Select the device server and press the Next
button. If a device server does not appear in the list of Found Devices, press the Refresh button.
If it still does not appear, verify the Ethernet patch cable is still connected to the device server,
the Link LED is on solid and the Act LED is flashing occasionally.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Device Server Setup - Continued
9. The next step is to assign an IP Address and a Subnet Mask to the device server, as shown
below. The IP Address of the device server needs to be on the same network segment as the
PC used to configure the device server. The network segment is the first three groups of numbers in the IP Address. Therefore, the first three groups of numbers in the IP Address of the
device server should be exactly the same as the first three groups of numbers in the IP Address
of the PC. In the IP Address field of the Digi® Device Setup Wizard, type the first three groups of
numbers in the IP Address of the PC obtained in step 5.
10. The fourth group of numbers in the IP Address needs to be unique for all devices on the network segment. The fourth group of numbers in the IP Address must be different than the IP
Address of the PC, written down in step 5. Choose a number between 1 and 254 that is not
being used by any other device and type it into the last portion of the IP Address field. To
determine if any other network device is currently using an IP Address, execute steps 1-3 of
The Ping Test detailed in the Troubleshooting section of this Application Note. If The Ping
Test fails, there is no device on the network segment using that IP Address, and it can be used
for the device server. Once an IP Address is chosen for the device server, write it down for
future reference (for testing and diagnostics).
11. After typing in the IP Address, the Subnet Mask should be filled in automatically by the Setup
Wizard. If it is not filled in, type 255.255.255.0 for the Subnet Mask. Typically, only the IP
Address and Subnet Mask are required for most LANs. Consult a local expert if any other IP
settings are required. After entering an IP Address and Subnet Mask, press the Next button.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Device Server Setup - Continued
12. The Setup Wizard needs to know how the device server is going to be used. For this
application, choose the “Incoming Network Connection” scenario and press the Next button, as
shown below.
13. After selecting the Incoming Network Connection option, the wizard needs to know what type
of socket connection will be used. Since the LAN devices will be both sending and receiving
data, the “Incoming TCP Connection” scenario should be selected and the Next button
pressed, as displayed below.
14. The last option in the Setup Wizard is to configure the serial port. The serial port should be set
up the same way as the RadioRA Serial Device. Use the settings listed below and press the
Next button.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Device Server Setup - Continued
15. The final step of the Digi® Device Setup Wizard is to verify all of the information that was
entered to this point. Double-check all of the information entered, and note that some values
(Default Gateway and DNS Server) have been filled in. If something is not correct, press the
Back button until the screen containing the information is displayed and then correct it. If all the
information is correct, press the Next button.
16. The Setup Wizard will send all of the configuration information to the device server and display
a status bar indicating the current progress. Once the wizard has sent all of the required information, the final screen displays that the device server configuration was saved successfully. It
also explains how to change any of the configuration information using the web interface. The
last screen also allows the Digi One® SP to be registered on the Digi® web site. Digi highly recommends that the device server be registered for proper technical support. Press the Finish
button to end the Digi Device Setup Wizard. The device server is now ready for use with
LAN devices. Use the IP address written down in step 9 and Port 2101 to communicate with
the RadioRA system. The setup can be verified by following the steps in the Troubleshooting
section of this Application Note.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Device Server Setup - Continued
17. If the Setup Wizard was not able to configure the device server properly, the following screen
will be displayed.
18. Press the “View Report…” button to view the Error Report, as shown below. As the highlighted
line indicates, the Setup Wizard was unable to properly save the configuration settings
because “Waiting for device…FAILED!”. In this case, the error is due to the PC and the device
server not being located on the same network segment or due to both devices having the
same IP Address. Reset power to the device server, return to step 5 and repeat all steps, making sure to write down the IP Address of the PC's Ethernet adapter for use in step 9 and 10. If
other errors are found in the Error Report, consult the Digi® Software & Documentation CD for
more information.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Troubleshooting
If a connection cannot be made to the Digi One® SP Device Server from the LAN device, there are
two tests that can help in determining where the source of the problem lies. Both tests are run
using the command prompt (also called the MS-DOS Prompt).
Open the Command Prompt Screen
1. For Windows® 98, press the Start button on the taskbar and select
Programs > MS-DOS Prompt.
2. For Windows 2000, press the Start button on the taskbar and select
Programs > Accessories > Command Prompt.
3. For Windows XP, press the Start button on the taskbar and select
All Programs > Accessories > Command Prompt.
The Ping Test
The ping test can be used to determine the source of connection problems to network devices.
The ping test can determine if an IP Address of a device on the LAN is valid. It can also determine
if a network device is on the same segment, depending upon the configuration of the LAN router.
1. Open the command prompt screen. Refer to Open the Command Prompt Screen above.
2. In the command prompt screen, type “ping”, a space, the IP Address of a network
device, and then press the Enter key. The ping command sends 32 bytes of data, four
separate times. The picture below shows what happens when the test passes. Note that
all four requests resulted in replies from the network device at IP Address 192.168.2.210.
In the statistics section, note the percentage of lost packets is 0%.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Troubleshooting - Continued
3. The picture below shows what happens when the test fails. Note that all four requests
timed out and there was 100% loss in the statistics section.
4. If the test fails, check the Ethernet cable connections at the PC sending the command
and at the network device. Also, check the power supply connection to the network
device.
The Telnet Test
The ping test can be used for any network device that has an IP Address. The telnet test can only
be run on a network device that has a serial port, like the Digi One® SP Device Server. If the ping
test failed, then the telnet test will fail as well. The telnet test is used to verify a network connection
to a device with a serial port. It is also used to verify the connection of the serial port on the device
to another serial port.
1. Open the command prompt screen. Refer to Open the Command Prompt Screen above.
2. In the command prompt screen, type “telnet”, a space, the IP Address of the device server, another space, the port number of the serial port on the device server and press the
Enter key. The IP Address of the device server was assigned in step 9 of the Digi One
SP Device Server Setup of this Application Note. Port 2101 is the default port number for
the serial port of the device server. The picture below shows the first step in attempting
to connect to a device server with IP Address 192.168.2.210, port number 2101.
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Connecting to a RadioRA System via a Local Area Network - continued
Troubleshooting - Continued
The Telnet Test - Continued
3. After pressing the Enter key, the command prompt opens the telnet client.
4. Press the Enter key a few times, causing the RadioRA Serial Device to reply with the !
prompt, which is displayed by the telnet client. The picture below shows what happens
when the telnet test passes using Windows® XP.
5. The ! prompt indicates that a connection has been made to the RadioRA Serial Device
through the device server. To finish the telnet test, click the button with an X (close button) in the upper right of the command prompt to close the telnet client and the command prompt screen.
6. If Windows 2000 or Windows 98 is being used, the ! prompt will only show up on the first
line. When typing in a command, such as "LMPI", the typed in text will not show up on
the screen. Additionally, after pressing Enter, the RadioRA Serial Device to reply with the
LMP command followed by fifteen 1's and 0's followed by the ! prompt. Notice that the
prompt appears to overlap with the LMP command when in fact two separate lines were
sent from the RadioRA Serial Device. This behavior is a limitation of the telnet client and
not a point of concern.
7. If the incorrect IP Address or port number is typed into the command prompt window, the
telnet test will fail. The picture below shows a failed telnet test. To correct the IP
Address, refer to the Digi One SP Device Server Setup section of this Application Note.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Troubleshooting - Continued
The Telnet Test - Continued
8. If the serial port settings on the device server are not the same as those on the RadioRA
RS-232 port, non-printable characters will be displayed in the telnet client, as shown
below. To correct the port settings, refer to the Digi One® SP Device Server Setup section of this Application Note.
Setting the PC's IP Address
If the IP Address of the PC running the Digi One SP Setup Software is not set, the Digi One SP
can not be configured properly. In addition, if the Subnet Mask does not have 0 as its last digit
group (i.e. 255.255.255.255), the Digi One SP can not be configured properly. An incorrect IP
Address or Subnet Mask has a greater chance of occurring when using Windows® 98 then
Windows 2000 or Windows XP, so the focus of this section will be Windows 98. To correct the IP
Address and/or Subnet Mask, the following procedure can be used.
1. Press the Start button on the taskbar and select Settings > Control Panel.
2. On the Control Panel screen, double-click the Network icon.
3. In the list of installed network components on the Network screen, select the item that
has both TCP/IP and EtherLink (or Ethernet) adapter in the name of the component, as
shown below. Press the Properties button to modify the IP Address and Subnet Mask.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Troubleshooting - Continued
4. On the IP Address tab, select the "Specify an IP address:" option.
5. Type a valid IP Address and Subnet Mask, as shown below.
6. Press the OK button on the TCP/IP Properties screen, and then on the Network screen
to save the current IP Address and Subnet Mask. Restart the PC to save the changes.
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RadioRA® Application Note #127:
Connecting to a RadioRA System via a Local Area Network - continued
Additional Information
World Headquarters
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TOLL FREE: (800) 523-9466 (U.S.A., Canada and the
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Tel: (610) 282-3800; International 1 610 282-3800
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FREEPHONE: (0800) 28 21 07 (U.K.)
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Fax: (171) 480-6899; International 44 171 480-6899
Lutron Electronics Co., Inc.
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Coopersburg, PA 18036-1299
Made and printed in the U.S.A. 9/04 P/N 048-129 Rev. Pending
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Tel: 2104-7733; International 852-2104-7733
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