Industrial Ethernet: The Hunt for the CSMA / CD

The unexpected nature of Ethernet TCP / IP s time ‘has long been a weakness for many industrial network applications, especially those with real-time requirements rugged capabilities. However, due to the overall cost vs. performance benefits has increased over time, industrial users have developed a way to overcome the obvious shortcomings.

In total, there are currently about thirty Industrial Ethernet system used around the world, but these are the most significant North American market are:

Ethernet / IP

Modbus / TCP

EtherCAT ®

Ethernet Powerlink


All protocols developed with the challenges of real-time control thinking (constant rotation time, low latency, low jitter), this particular design preventive measures to avoid collision data, and they approach the solution in different ways.

The a real difference to the standard Ethernet TCP / IP is a further implementation of the Real Time Data Exchange module that manages real-time communication in either place or on top of TCP / IP / UDP.Still, all protocols continue support for Ethernet (IEEE 802.3 layer) and physical data and TCP / IP / UDP, thus providing an interface to networks.

Protocols standard level information such as Ethernet / IP and Modbus / TCP seems most vulnerable when it comes to hard real-time control, for they will inherit all the features that make the Ethernet TCP / IP non-deterministic. While the CSMA / CD edition (random time delay after bus arbitration) can be significantly reduced by using Ethernet switches, protocols still face the additional jitter caused by the UDP and IP. Without careful design considerations, they were questioned for hard real-time control, especially for fast applications.

Ethernet Powerlink motion control circumvents the CSMA / CD problem very elegantly passing through TCP / IP / UDP layer when it comes to real-time communication. Ethernet Powerlink uses a focused and highly deterministic time slice assigned to each node in the network. The result is that only one node sends data on the bus during a dedicated time slice, while all other nodes wait for their turn. This procedure effectively prevents any message collision and thereby eliminate idle random times. Obviously, via TCP / IP / UDP also removes the IP / UDP jitter.

EtherCAT ®, however, came the CSMA / CD problem by removing completely the physical level, which, with all consequences time, requiring the use of dedicated hardware. While the EtherCAT Master ® system only requires common Ethernet network interfaces, each EtherCAT ® slave device requires a special controller. EtherCAT ® still using Ethernet as the physical layer, but the Ethernet message is passed from node to node (daisy-chain), thus eliminating the need for bus arbitration per CSMA / CD.

Profinet, compared to all other protocols introduced here, have a transition through all situations described earlier: PROFINET V1 (CBA) using standard Ethernet TCP / IP, PROFINET V2 (RT) bypasses the TCP / IP / UDP layer, while the PROFINET V3 (IRT) using a dedicated Ethernet controller.

Move Your Office? Cloud Gives You Options

You have to fight the lack of space for your operations for years and now, finally, you’re ready to find a bigger place and really moved. But wait, there are some things, from our point of view, we want you to consider first. We just might be able to do more than a transition to a larger space, we may be able to help you make the transition as one that provides a series of extraordinary profits, all while saving money . That last three words could be caught your attention. After all, this step is probably not a money-saving initiatives. So how can we help you move, upgrade your network, and can reduce the cost of your new space? In short, cloud. You see, network cloud lower overall network costs and save you from ever having to buy another server or PC again.

How’s do it? With all the cloud data network is moved to a highly secure data center to house our Dell supercomputer. You are connected to your network via the internet from anywhere with a web capable device. Our caddies installed in your office, this cloud access device without moving parts.So office now you are free from all the ancient hardware. Server is in the cloud, PC caddies replaced without maintenance (and if one fails, a rare event, we replace them soon) 8-10 years and the last electrical use only one- tenth of a standard tower PC. Think how much you will save on electricity alone. But it’s getting better, a little way to tune the IT problems of 95 percent less. And the remaining five per cent of these issues? Ninety-five percent of them can handle remotely.

So think to move to a new office space, maybe get some new furniture. Your new office is much less CO2 being pumped into it through the network. You have captured floorspace used to be occupied by your PC tower. And your server room? Now the supply closets. People will be more productive, you have to get very easy access to your network from home, on the road, on holiday (sorry about that), though, anwhere, anytime web-enabled device. So do not miss the opportunity to maximize the benefits of moving your company. You will go through some major changes, however, may well make all the changes that can help you be more productive and prosperous. After all, that’s why you’re in business, right?

A Simple Guide On How To Save Money When Printing

There are so many ways in which we could save money today. We continue to focus on printing. Did you know that you can save hundreds of dollars every year? This is especially true in case you continue to use the printer or when referring to the operation business.

Save On Paper And InkMost savings will come when you reduce how much paper and ink you use. For starters, just print the documents and email are really required. If you do not have to store the documents in a filing cabinet, do not do it! You can easily store documents and emails on your computer or in the cloud storage. Also, try to print on both sides of the paper whenever possible. Note that some printers only print on both sides when the Duplex feature is enabled. It is usually not by default. You can also print more pages document on a page if you do not mind size.

You need to change the quality settings to save ink. It took quite a lot of money saved. Make sure you are using Draft or Fast. The words may be dirty, but not essential, you’ll like the extra cash in your pocket. Normally be used for regular printing but every time you do not have good quality, with the concept or Fast.

Choose FontsMost people really do not think about it but it is actually a very good idea. As a very simple example, Century Gothic is more consume less ink than Arial, which is the classification of the industry standard. Statistics indicate that a company that prints about 250 pages until the end of the week to save $ 80 annually when switching fonts. Times New Roman is also cost-effective, but Century Gothic better. In Microsoft Word go to “Change Style” and you can also go to “Tools-Options-Mail Format-Stationery and Fonts” in Microsoft Outlook to change fonts.

Buy A Second PrinterThis definitely not something that you have considered until now and probably looks like a paradox. It is a very good idea to have 2 printers as it can save you money. The principle is quite simple: to use one for black-and-white printing and the second color for printing. Invest in a laser printer for black-and-white and color printers should be one designed to shoot prints.

One the worst thing you can do is print black and white documents to a printer picture. Laser printers are not all perfect, but they are more expensive when compared to inkjet. Do some research before you buy because there is a difference when referring to the price per page when referring to the laser printer! You really want 2-4 cents on average laser print page. Also, printing faster.

Extra Tips For OfficesThe need to save money for the office manager is higher than that for the normal user. If you can not get employees to use the correct printer, be sure to label them with you. In addition, this still does not work, prohibit printing individual tables. This basically means that you move the printer to another room. We see the fact that many employees think twice before printing if they have to walk the printer to retrieve the document out. They only do it when they really need to.

There are no employees that require special printer, which is dedicated solely to him. There are only a few exceptions to this.