bush conduit 20mm metal

Cable Management Pressed Metal Conduit Fittings, Metal Bush 20Mm Or 3/4 Inch

Catalogue Number: 192M
bush conduit 20mm metal
Colour:
Colour: Per UOM Std.
  • 1 PCE

Specifications

hide show
Product brand
Clipsal
REACh Regulation
Free of Substances of Very High Concern above the threshold
REACh free of SVHC
Yes
EU RoHS Directive
Pro-active compliance (Product out of EU RoHS legal scope)
Toxic heavy metal free
Yes
Mercury free
Yes
RoHS exemption information
Yes
China RoHS Regulation
 Pro-active China RoHS declaration (out of China RoHS legal scope)
Circularity Profile
N/A

Documents & downloads

hide show
Filter items
  • All

  • Product Brochures

  • Technical Data Catalogues

  • Installation Instruction

  • Specifications

  • Certificates (MSDS)

Frequently Asked Questions

hide show

What is the part code for a 19mm vent for the NSYPLM32

 The part code is NSYCAG19LP

What is the part number of the lid to suit mounting enclosure 56E4?

The part number of the lid to suit mounting enclosure 56E4 is 56L4. Mounting enclosure lids are moulded in UV stabilised polycarbonate and supplied complete with sealing gasket. The dimensions are 192mm x 192mm x 28mm deep.
For further information, please visit https://www.clipsal.com/Trade/Products/ProductDetail?catno=56L4

 

Do Clipsal still make the Heritage range?

No we do not but you can still get the product from Classic Electrical.
Visit the Classic Electric Switch Company website for a list of distributors
https://www.classicelectric.com.au/

when was the Clipsal Heritage range discontinued ?

The Heritage range was discontinued by Clipsal in November 2014
Some Heritage range products may still be available through the " Classic Electric Switch Company "

What would be the part number for a black Heritage range plate with no mechanism ?

1920/31-bk
Surface Switches - Heritage Range, Porcelain Base Versions, Surface Mounted Switches - Brass Cover - standard 58mm porcelain base colours White Electric (WE), Black (BK), Blank unit to suit 30 Series Switch mechanisms.

Please Note - Clipsal no longer have the Heritage range as we have discontinued this product range
 

What is the part number of the mounting block to suit 644, PDL quad outlet?

Part number of the mounting block to suit 644, 4 gang switched socket is:
PDL640RC - Round conduit adaptor 25mm.
PDL640SC -square conduit adaptor 25.5mm x 16.5mm.
Size: 196mm x 84mm x 19mm high. 84mm mounting centres.
For further information, please visit https://www.pdlglobal.com/data/product_documents/769_datasheet_document.PDF




 

What is the sensing range of the FLS20SENLED?

The sensor detection range of the FLS20SENLED is between 2m and 12m based on a mounting height of 2-3m.


For further information please visit https://www.clipsal.com/Trade/search-results?q=FLS20SENLED


 

Is there a Trailing Edge dimmer available for the Heritage Series?

No, unfortunately it is no longer possible to create such a part.

Previously the Heritage series dimmer was made up using parts 1920/31-WE and 32E450UDM-WE universal dimmer which covers both Leading and Trailing edge. However the heritage range was discontinued so the part 1920/31 is no longer available.

The 1920/31 was a polished brass blank unit which suited clipsals standard switch modules.

Unfortunately you need to find an alternative manufacturer or replace it with our current stock.

PLEASE NOTE the Heritage series was been discontinued on the 28/11/2014.

How much heat is generated by my Conext system?

Issue:
Questions about how much heat each part of a Conext system uses.

Product Line:
Conext Battery Based Inverters
Conext MPPT Solar Charge Controllers

Environment:
Battery based inverter in an enclosed environment.

Cause:
Proper system design needs to account for system cooling.

Resolution:
The power in BTUs per hour (BTU/hr) is equal to 3.412141633 times the power in watts (W):
P(BTU/hr) = 3.412141633 × P(W)

The efficiency and load of each unit can be used to calculate power loss in watts and then the above formula can be used to convert to BTU/hr.

Conext XW+ 6848
Load (W) Efficiency Loss (W) Heat (BTU/hr)
6800 87% 884 3016
3000 94% 180 614
1500 95% 75 256

Conext SW 4024 NA
92% efficient at 4000W = 320W losses = 1092 BTU/hr

Conext MPPT 60 150
98% efficient at 48V battery at 3500W = 70W losses = 239 BTU/hr

Conext MPPT 80 600
96% efficient at 48V battery at 4800W = 192W losses = 655 BTU/hr
 

Video: How to Run a Manual Self-test on your Symmetra PX10-80KVA UPS

Issue:
How to Run a Manual Self-test on your Symmetra PX10-80KVA UPS
 
Product line:
Symmetra PX1
 
Environment:
All Product models, all serial numbers
 
Cause:
At times it is necessary to perform a battery system test outside normally scheduled intervals
 
Resolution:
Select "Control" from the main Menu
Select "Do Self Test" and hit enter

Confirm the option by selecting Yes and hitting enter (The test will run for 1 minute)
 
You can monitor the status of the batteries while the test is running by Hitting Escape to get back to the main menu

Select "Status" from the main menu
Scroll down the list to Battery Voltage.

Make a note of the Actual Battery Voltage and How low it goes during the test. When the test is completed this number will start climbing. Value should be as close to 192v as possible. Lower values indicate the batteries are getting weak.

The following video demonstrates this procedure:
 

What is the difference between L5508RVFP and L5508RVF?

L5508RVFP and L5508RVF are C-Bus DIN Rail Mounted Relay Units, 250V AC 10A 8 Channel, 12M modules wide. The only difference between the two is L5508RVFP does not come with C-Bus Power Supply and L5508RVF is with 200mA C-Bus internal Power Supply.
For further information, please visit:
https://www.clipsal.com/Trade/Products/ProductDetail?catno=L5508RVFP
https://www.clipsal.com/Trade/Products/ProductDetail?catno=L5508RVF

User-added image
User-added image

ION9000 Part Numbers and Accessories

Issue
ION9000 Part Numbers and Accessories

Product Line
ION9000 series meter

Environment
Part Numbers

Cause
Where to find part numbers for the ION9000 series meter and its accessories

Resolution
ION9000 Basic Models and Display Accessories:
References Description
METSEION92030 ION9000 meter, DIN mount, no display, HW kit
Meter Hardware Kit: plugs, terminal guards, spare grounding screw, DIN clips, terminal sealing covers and
Current input Hardware Kit: terminal covers, CT input screws, terminal sealing cover
METSEION92040 ION9000 meter, DIN mount, 192 mm display, B2B adapter, HW kit
All the above + Display Hardware Kit: mounting nut, DIN 96 adapter, 3 meter cable, centering pin, mounting template
METSEPM89RD96 Remote display, color LCD, 96 x 96 mm
METSERD192 Remote display, color touchscreen, 192 x 192 mm

ION9000 Accessories - I/O Modules, Adapters, Demo Kit:
References Description
METSEPM89M2600 I/O module, 2 relay outputs, 6 digital inputs
METSEPM89M0024 I/O module, 2 analog outputs, 4 analog inputs
METSE9B2BMA ION9000 B2B adapter
METSEION902040DEMOK ION9000 Demo Kit
METSE7X4MAK ION7x50 Mounting Adapter kit

ION9000 Accessories - Hardware Kits:
References Description
METSE9HWK ION9000 meter hardware kit
  • plugs, terminal guards, spare grounding screw, DIN clips, terminal sealing covers
METSERD192HWK RD192 remote display hardware kit
  • mounting nut, DIN 96 adapter, 3 meter cable, centering pin, mounting template
METSE9USBK ION9000 USB cover hardware kit
  • replacement door for the USB ports
METSE9CTHWK ION9000 current input hardware kit
  • terminal covers, CT input screws, terminal sealing cover
METSEPMBATK Battery replacement kit for ION7400, ION9000, PM8000
  • Battery for real-time clock; typically only needed if required by customer policy

Is continuous operation (with no maintenance) possible on Blokset, for 5 years?

 

        • - Installation room air should be controlled for dust presence: dust is the main issue. What is the switchboard required IP? Higher IP could help a lot to protect the switchboard.

          - In any case, maintenance cycle as described in the Blokset Instruction Manual item 4.4 "maintenance" must be performed. One example: power connections must be checked visually every year. If in the visual checking any loosing connection is detected must be tightened. Bolts re-tightening is not needed. Visual check is only possible if both the panelbuilder and the installation contractor use red solid paint on all bolted power connections, as required in the General assembly rules and Blokset tech. guide. See the Instruction Manual "item maintenance" for details, chapter 4.4.

          - The quality of hardware used on connections must be as required in "4.2. Material specification and surface treatment 7045x0.pdf" (latest transfer file version) It could be possible to keep the switchboard powered during maintenance, but maintenance teams/contractor and end-user will need to define the correct maintenance procedures according to the Blokset Installation & Instructions Manual "9.1. Instruction Manual - ESBED397708-Mai 07.pdf" (latest transfer file version) safety standards applicable to the client site (operators skill, special cares on covers removal/repositioning, etc.)

          - If drawers are used in this contract they must be maintained as explained in the guide. Of course, there is no need to de-energize the busbar: just stop the drawer, remove it, grease the plugs with the right grease (mandatory to use for the client: should be supplier ), re-insert the drawer and restart when possible.

          - We recommend the switchboard to have at least 1.2m clearance behind (not against a wall) so that visual inspection is possible on ACB and MCCB connections. For eventual MCC cubicles, front access is ok.

           

          FAQ14.pdf


Legacy KB System (APS) Data: RESL190683 V2.0, Originally authored by JoElRe on 01/17/2008, Last Edited by GwPo on 07/23/2010
Related ranges: Blokset

How do I setup my ATV630 and ATV930  Process drives to connect to Somove using Ethernet?

Issue:
How do I set up Somove over Ethernet on the ATV630 drive?

Product Line:
Altivar 630 Process Drives

Environment:
All 

Cause:
Customer needs to program/control the drive over a network

Resolution:
Step 1 
Need to find your PC’s Ethernet IP addressing information:
In your Windows search box (in the Start menu if using Windows 7)
Type ‘cmd’ enter - Command Prompt window opens 
Type ‘ipconfig’ and press Enter
Note the IP address, Subnet Mask, and Default Gateway of your PC 

Step 2
Power up the ATV630 drive 
Using the HMI (keypad), from the main menu, go to the menu 6 Communication and press OK
Highlight "Comm parameters" and press OK
Scroll down and highlight "Embd Eth Config" and press OK
Set IP Mode Ether. Embd to ‘Fixed’
IP address needs to be the same as your PC except change the last octet to another number not already being used by another machine on your network (ex: your PC= 192.168.1.2 and the drive= 192.168.1.6)
Set the ‘Mask’ to match your PC’s Subnet Mask (ex: 255.255.255.0)
Set the ‘Gateway’ to match your PC’s Default Gateway (ex: 192.168.1.1)

Step 3
Open your SoMove software 
On the left-hand side of the SoMove window click “Edit Connection / Scan”. 
At the top left of the Scan Result window click “Modbus TCP”
At the top right of the Scan Result window click the Advanced Settings button, which looks like a gear
Choose the Scan tab at the top of the Advanced Settings window
Enter your Drive’s IP address leaving the last octet as 0 and enter the last octet digit in the single scan box. 
Example: 192. 168.1.0 
   Scan configuration: Single (checked) = 6
Click Apply and click OK. (You may have to scroll down and to the right to see these)
In the Scan Result window click “Scan Network” in the lower-left-hand corner to scan for the drive 
Once your drive is discovered, double-click on it to begin working with it

What hardware is required to add an M340 expanded backplane?

Adding an expansion rack requires an Extension rack Module (BMXXBE1000), Extension rack Cable and Terminators.
The BMXXBE2005 is an Extension rack kit that contains everything that you need including:

  • 2 BMXXBE1000 extension rack modules
  • one BMXXBC008K 0.8 meter extension cable
  • one TSXTLYEX set of 2 line terminators

Other cable lengths available:
BMXXBC015K - 1.5m extension rack cable.
BMXXBC030K - 3m extension rack cable.
BMXXBC050K - 5m extension rack cable
BMXXBC120K - 12m extension rack cable







 

Legacy KB System (APS) Data: RESL212579 V1.0, Originally authored by DaSo on 09/25/2013, Last Edited by DaSo on 09/25/2013
Related ranges: Modicon M340

How to log VIP Events

The 'event priority' of the VIP Event Log is set to 192 by default. Most control actions need this to be adjusted to a more useful level. For example the AND/OR Module requires an event priorty of 15 on transition actions. To record these changes in the event log follow this procedure:

  1. Load ION Designer and open the VIP
  2. Open the AND/OR Module setup registers
  3. Change the AN# EvLog Mode to Log-On
  4. Open the EventLogCtl 1 setup registers in the VIP
  5. Change the EL1 Cutoff to your desired Event priorty level (15 for this example)
  6. Choose File -> Send & Save then close Designer
  7. Open the Microsoft Services and restart the ION LogInserter Service.

This should allow the VIP events to show up in a Event Log Viewer object, or the Global Event Log viewer (with the appropriate viewing priority filter).



Last Revised: April 17, 2008
Applies To: ION Enterprise 5.0 / 5.5 / 5.6
Original Author: LS
Public
All content © 1992-2008 Schneider Electric

Legacy KB System (APS) Data: RESL191707 V1.0, Originally authored by KBAdPM on 04/18/2008, Last Edited by KBAdPM on 04/18/2008
Related ranges: ION Enterprise V5.6, ION Enterprise V5.5, ION Enterprise V5.0

Configuration Guidelines for using PPP over GSM/GPRS card

Issue:

Configuration Guidelines for using PPP over GSM/GPRS card

Product Line:

NetBotz

Environment:

NetBotz version 2 using GSM/GPRS

Cause:

Configuring GSM/GPRS cards to establish a PPP link can be a challenge; however, it all depends on what settings are required to establish a PPP link with a GSM/GPRS service provider.

Resolution:


Before you begin, make sure the supported GSM/GPRS card has a valid SIM.

A successful PPP connection (i.e. with Cingular in the U.S.) via GSM/GPRS may be established by 2 basic steps:

* Set "Phone Number" to *99# (it signalizes GPRS network that this is not a regular phone call but a GPRS connection)
* On Advanced tab, UNCHECK "end LCP echo request to peer"
* Leave everything else default

Some GPRS service providers require more settings for a successful PPP connection (more common in Europe and Asia). Contact your GPRS provider for the following:

* Country code (if supported by the modem)
* User ID/Password
* Access Point Name (APN), used in "Extra Initialization commands" field in this format:

AT+CGDCONT=1,"IP","<APN>"

Where <APN> should be replaced with a specified APN of the desired GSM/GPRS network.

For instance,

AT+CGDCONT=1,"IP","orangeinternet"

or

AT+CGDCONT=1,"IP","mobile.o2.co.uk" 



Note:To ensure your card and SIM are working correctly, install the card in your laptop or handheld first, then install it in the NetBotz appliance.
 

What is Vijeo Designer update V6.2.6.1008 (SoMachine v4.3 Vijeo 6.2.6.1 Update)?

Issue
What is Vijeo Designer update V6.2.6.1008 (SoMachine v4.3 Vijeo 6.2.6.1 Update)?

Product Line
SoMachine v4.3, Vijeo Designer v6.2

Environment
Configuration software for Windows PC

Resolution

Vijeo Designer update V6.2.6.1008, otherwise known as SoMachine v4.3 Vijeo 6.2.6.1 Update is a Service Pack for Vijeo Designer v6.2 that comes integrated into SoMachine v4.3.
This addon will is delivered as a ".exe" file and can be installed on top of SoMachine V4.3 and can be obtained with the Schneider Electric Software Update tool which comes pre-installed with Schneider Electric products. In the Schneider Electric Software Update tool, this update will appears as " SoMachine v4.3 Vijeo 6.2.6.1 Update". When you download the update, it will be saved as filename "SoMachineV4.3_Vijeo_6.2.6.1008_18.05.03.01.exe".
 
Running this executable file will automatically launch the SoMachine Configuration Manager (SCM) to install this addon.

The installation of this addon requires Windows Administrator privileges to start.
 
Note: Former versions of Vijeo Designer will be uninstalled at first. Afterwards Vijeo Designer v6.2 SP6.1 will be installed.

Improvements inside Vijeo Designer 6.2 SP6.1
New features
        • Support new Magelis displays (and XL display) HMIDT752 and HMIDT952 on HMIG5U2 in SoMachine
        • Support new Magelis iPC
                ○ HMIPSP
                ○ HMIPEP
                ○ HMIPSO
                ○ HMIBMU
                ○ HMIBMP
        • Improved Microsoft Windows10 Pro 32bit/64bit support
        • Support resolution on Magelis iPC HMIBMU and HMIBMP:
                ○ 800 x 600 (SVGA)
                ○ 1280 x 720 (HD720)
                ○ 1280 x 800 (WXGA)
                ○ 1280 x 1024 (SXGA)
                ○ 1440 x 900 (WSXGA)
                ○ 1600 x 1200 (UXGA)
                ○ 1680 x 1050 (WSXGA+)
                ○ 1920 x 1200 (WUXGA)
                ○ 2560 x 1600 (WQXGA)
 
Quality improvements
        • Improve robustness of HMSCU by preventing USB event file corruption due to the power interruption (which could be provoked by backing-up Event Log groups).
        • Improve robustness of HMSCU by preventing SRAM alarm file corruption due to power interruption (which could be provoked by backing-up Alarms)
        • Improve robustness of HMISCU (runtime) when using function block READ_VAR (of library PLCCommunication) for Modbus communication (thus avoiding loss of read registers).
        • Improve robustness of Vijeo-Designer by accepting also variables with specific or empty namespace attribute to be shared via SoMachine’s symbol configuration.
        • Improve robustness on HMIS5T: the connection via Ethernet to a controller will be reestablished after a temporary disconnection.
        • Allow to convert a HMI “with Control” into one without control within the Standalone version of Vijeo Designer.
This implies performing first an export from SoMachine into a Vijeo Designer vdz file, followed by the conversion within the “Standalone” version of Vijeo Designer, followed by the import of the new vdz file into SoMachine.
        • Avoid the dialog “Security has been set up on the target machine” (prompting for an user and password) when downloading an application via Vijeo Designer (“Download Target”), in case security was not set-up.

 

Smart-UPS SRC 5k, 6k, 8k and 10 KVA FAQ

Issue:

SRC 5,6,8 and 10 KVA FAQ

Product Line:

Smart-UPS

Environment:

All SRC models, All Serial Numbers

Cause:

Product Information

Resolution:

Q: Do the SRC 5-10 KVA UXI Models turn on without battery when the Input Power is available?
A: Yes

Q: What is the use of Parallel Kit(SRCPK001 & SRCPK002)?
A: The Parallel Kit allows you to connect the two UPSs' output supply to the load via a common AC bus bar. Both the UPSs share the load equally but if one  fails (either through developing a fault or being taken out of service for maintenance), the other UPS will take over powering the load. This only supports the SRC series of SmartUPS.

Q: What are the advantages of the SRC 5-10 KVA LCD Display?
A: The user can get the clear and correct information of the UPS operation condition such as the load, input/output voltage, input/output frequency, and battery voltage, etc.,The Output Voltage can be set through LCD: 220 / 230 / 240 Vac.

Q: Can we get information about the charging facility for the SRC5/6/8/10KVAUXI Models?
A: Boost charge & floating charge are available and there are 4 segments of charge current optional to be set: 1.4A/3A/6A/8A, in accordance with the actual condition to keep the battery at full state, thus extending the battery life.

Q: When do I need to choose a Service Bypass Panel?
A: In addition to the 1+1 Parallel redundancy system, the Customer can also look into a service bypass panel which will give you a wrap around bypass. This means that if the Customers needs to take a UPS out of operation for any reason, they can use the wrap around bypass to bypass the UPS without taking their load down.

Q: What are the advantages of the APTF10KW01 Isolation Transformer?
A: APTF10KW01 is used as filters, isolating the UPS and connected equipment from any outside utility line fluctuations or interference.  APTF10KW01 step-down transformers are used to convert a higher input voltage to a lower output voltage which might be more fitting for certain environments or system configurations.

Q: What is the battery voltage that is required for SRC 5 and 6 KUXI Models?
A: Requires a 192 Vdc battery system.

Q: What is the battery voltage that is required for SRC 8 and 8 KUXI Models?
A: Requires a 240 Vdc battery system.  

Understanding common network and internet terminology.

Goals and Symptoms

Internet users may require to know the current TCP/IP network configuration values for setting up their Ethernet devices for TCP/IP connection or sending/receiving Email. In the example below, the ION meter is required to have its own IP address, Subnet mask, Gateway, DNS and SMTP server etc. Some of this information may be found on the network, or a network administrator may have to provide details. This is a document shows how to find common information and also explains the terminology.

Causes and Fixes

Displaying the current TCP/IP network configuration values:
Go to Start > Run > and type cmd and click ok. In the command line type ipconfig/all



Ipconfig is a command line tool used to control the network connections on Windows NT/2000/XP machines. There are three main commands: "all", "release", and "renew". Ipconfig displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) settings. Used without parameters, ipconfig displays the IP address, subnet mask, and default gateway for all adapters.

 

 

Understand internet terminology:

DNS server

Short for Domain Name System (or Service or Server), an Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remember. The Internet however, is really based on IP addresses. Every time a domain name is used, a DNS service must translate the name into the corresponding IP address. For example, the domain name www.example.com might translate to 198.105.232.4.

The DNS system is, in fact, its own network. If one DNS server doesn't know how to translate a particular domain name, it asks another one, and so on, until the correct IP address is returned.

 

DHCP server

Short for Dynamic Host Configuration Protocol, a protocol for assigning dynamic IP addresses to devices on a network. With dynamic addressing, a device can have a different IP address every time it connects to the network. In some systems, the device's IP address can even change while it is still connected. DHCP also supports a mix of static and dynamic IP addresses.

Dynamic addressing simplifies network administration because the software keeps track of IP addresses rather than requiring an administrator to manage the task. This means that a new computer can be added to a network without the hassle of manually assigning it a unique IP address. Many ISPs use dynamic IP addressing for dial-up users.

 

WINS server

Short for Windows Internet Naming Service, a system that determines the IP address associated with a particular network computer. This is called name resolution. WINS supports network client and server computers running Windows and can provide name resolution for other computers with special arrangements. Determining the IP address for a computer is a complex process when DHCP servers assign IP addresses dynamically. For example, it is possible for DHCP to assign a different IP address to a client each time the machine logs onto the network.

WINS uses a distributed database that is automatically updated with the names of computers currently available and the IP address assigned to each one.

DNS is an alternative system for name resolution suitable for network computers with fixed IP addresses.

 

 

IP Address

An identifier for a computer or device on a TCP/IPnetwork. Networks using the TCP/IP protocol route messages based on the IP address of the destination. The format of an IP address is a 32-bit numeric address written as four numbers separated by periods. Each number can be zero to 255. For example, 1.160.10.240 could be an IP address.

Within an isolated network, IP addresses can be assigned at random as long as each one is unique. However, connecting a private network to the Internet requires using registered IP addresses (called Internet addresses) to avoid duplicates.

Every computer that communicates over the Internet is assigned an IP address that uniquely identifies the device and distinguishes it from other computers on the Internet. An IP address consists of 32 bits, often shown as 4 octets of numbers from 0-255 represented in decimal form instead of binary form. For example, the IP address

168.212.226.204

in binary form is

10101000.11010100.11100010.11001100.

But it is easier for us to remember decimals than it is to remember binary numbers, so we use decimals to represent the IP addresses when describing them. However, the binary number is important because that will determine which class of network the IP address belongs to. An IP address consists of two parts, one identifying the network and one identifying the node, or host. The Class of the address determines which part belongs to the network address and which part belongs to the node address. All nodes on a given network share the same network prefix but must have a unique host number.

Class A Network -- binary address start with 0, therefore the decimal number can be anywhere from 1 to 126. The first 8 bits (the first octet) identify the network and the remaining 24 bits indicate the host within the network. An example of a Class A IP address is 102.168.212.226, where "102" identifies the network and "168.212.226" identifies the host on that network.

Class B Network -- binary addresses start with 10, therefore the decimal number can be anywhere from 128 to 191. (The number 127 is reserved for loopback and is used for internal testing on the local machine.) The first 16 bits (the first two octets) identify the network and the remaining 16 bits indicate the host within the network. An example of a Class B IP address is 168.212.226.204 where "168.212" identifies the network and "226.204" identifies the host on that network.

Class C Network -- binary addresses start with 110, therefore the decimal number can be anywhere from 192 to 223. The first 24 bits (the first three octets) identify the network and the remaining 8 bits indicate the host within the network. An example of a Class C IP address is 200.168.212.226 where "200.168.212" identifies the network and "226" identifies the host on that network.

Class D Network -- binary addresses start with 1110, therefore the decimal number can be anywhere from 224 to 239. Class D networks are used to support multicasting.

Class E Network -- binary addresses start with 1111, therefore the decimal number can be anywhere from 240 to 255. Class E networks are used for experimentation. They have never been documented or utilized in a standard way.

 

 

Subnet mask

A mask used to determine what subnet an IP address belongs to. An IP address has two components, the network address and the host address. For example, consider the IP address 150.215.017.009. Assuming this is part of a Class B network, the first two numbers (150.215) represent the Class B network address, and the second two numbers (017.009) identify a particular host on this network.

Subnetting enables the network administrator to further divide the host part of the address into two or more subnets. In this case, a part of the host address is reserved to identify the particular subnet. This is easier to see if we show the IP address in binary format. The full address is:

10010110.11010111.00010001.00001001

The Class B network part is:

10010110.11010111

and the host address is

00010001.00001001

If this network is divided into 14 subnets, however, then the first 4 bits of the host address (0001) are reserved for identifying the subnet.

The subnet mask is the network address plus the bits reserved for identifying the subnetwork. (By convention, the bits for the network address are all set to 1, though it would also work if the bits were set exactly as in the network address.) In this case, therefore, the subnet mask would be 11111111.11111111.11110000.00000000. It's called a mask because it can be used to identify the subnet to which an IP address belongs by performing a bitwiseAND operation on the mask and the IP address. The result is the subnetwork address:

Subnet Mask 255.255.240.000 11111111.11111111.11110000.00000000
IP Address 150.215.017.009 10010110.11010111.00010001.00001001
Subnet Address 150.215.016.000 10010110.11010111.00010000.00000000
The subnet address, therefore, is 150.215.016.000.

 

Gateway

Gateway is a node on a network that serves as an entrance to another network. In enterprises, the gateway is the computer that routes the traffic from a workstation to the outside network that is serving the Web pages. In homes, the gateway is the ISP that connects the user to the internet.

In enterprises, the gateway node often acts as a proxy server and a firewall. The gateway is also associated with both a router, which use headers and forwarding tables to determine where packets are sent, and a switch, which provides the actual path for the packet in and out of the gateway.

SMTP

SMTP is short for Simple Mail Transfer Protocol, a protocol for sending e-mail messages between servers. Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP. In addition, SMTP is generally used to send messages from a mail client to a mail server. This is why both the POP or IMAP server must be specified and the SMTP server when the e-mail application is configured.

 

POP

POP is short for Post Office Protocol, a protocol used to retrieve e-mail from a mail server. Most e-mail applications (sometimes called an e-mail client) use the POP protocol, although some can use the newer IMAP (Internet Message Access Protocol). There are two versions of POP. The first, called POP2, became a standard in the mid-80's and requires SMTP to send messages. The newer version, POP3, can be used with or without SMTP.

 

IMAP

IMAP is short for Internet Message Access Protocol, a protocol for retrieving e-mail messages. The latest version, IMAP4, is similar to POP3 but supports some additional features. For example, with IMAP4, a search can be done through the e-mail messages for keywords while the messages are still on mail server. The messages found can then be downloaded to the client machine.

Attachments

(Removed Image URL: /PubResEXPORT.nsf/2b87ee90be777fc085257c28006ee4ef/5e9d49715bbdd5fdc12575f900529d0f/fl_block_5/0.1A60?OpenElement&FieldElemFormat=gif)
Date Created: July 9, 2009
Last Revised: July 20, 2009
Public
Original Author: TL
All content © 1992-2009 Schneider Electric


Legacy KB System (APS) Data: RESL199409 V1.0, Originally authored by MiNe on 07/20/2009, Last Edited by MiNe on 07/20/2009
Related ranges: Ethernet and TCP/IP