Download File ===> https://urllie.com/2tlIcf
How many pages is 1200 words Just a little under 2.5 pages single spaced, and almost 5 pages double spaced. This may vary if you're using non-typical fonts or page margins, but with a standard 12 point Times or Arial font and default margins you should see similar results. Examples of 1200 word count pages might be a mid-length high school essay, a short college paper or a small to medium sized blog post or product review.
1,200 words is 2.4 pages single-spaced or 4.8 pages double-spaced. Documents that typically contain 1,200 words are high school and college essays, short blog posts, and news articles. It will take approximately 4 minutes to read 1,200 words.
However, the number of pages will vary depending on your margins, font family, font size, whether you use multiple spaces after a period, and your paragraph spacing settings. For example, 1 page single spaced created using Arial font will generate only 0.9 pages with Calibri or Times New Roman font.
1,200 words double-spaced is 4.8 pages. Teachers may ask you to write an essay using double spacing so that it's easier to read and easier to add comments/feedback to. A standard double-spaced page contains 250 words.
1,200 words handwritten and single-spaced produces 4.8 pages. Handwriting is about twice as large as words typed in 12 point Arial or Times New Roman font which makes single-spaced handwritten pages equivalent to double-spaced pages.
Of the standard fonts used in essays and other documents, Verdana will create the most pages. On average, Verdana will create 1.1 pages for every 1 page written using Arial and 0.9 pages for every page written with Times New Roman or Calibri in Microsoft Word or Google Docs. These are just estimates . If you're looking to write the fewest number of words for your school assignment to meet a page count, we recommend using Verdana (if allowed) or Arial. A good rule of thumb is to use Arial font unless your teacher provides different guidelines for font or spacing.
This is a brief tutorial on getting started with the Siemens embedded web server in the S7-1200 and S7-1500. Using the concepts explained below, you can create a simple web page or a fully featured HTML5 web app.
Now we can enable the user pages and use this file we created. To enable user pages, navigate to the device configuration -> Web server -> User-defined Web pages. Set the HTML Directory to the folder you created and the Default HTML page to the file you created. Then click Generate Blocks to compile the user page:
Fragments are the name given to each file in your user pages folder. Initially, we just created a single \"index.htm\" file, but let's suppose you had several files in this folder. It would look something like this:
In order for user pages to work, you have to call the WWW Function in your project. Recall the DBs created by the \"Generate Blocks\" function. We already know that DB334 stores the fragments. DB333 is used in conjunction with the WWW Function to control the retrieval and delivery of the fragments:
If you browse to the IP Address of your PLC, you will see the main Siemens Web server login page. There is a link on the left for User Pages. The name in the hyperlink matches the Application name you specified in the User-defined Pages config screen in TIA Portal:
Notice the tag name is prefixed with \":=\" and suffixed with \":\" This is the key to injecting variables into the user page. When the page is rendered it will replace the token with the actual PLC tag value.
Next, click the \"Generate Blocks\" button in the Webserver config and download the program to the PLC. When you browse to the user page, you will see the counter value update when the page is refreshed. Notice how the page flickers when refreshed. This can be annoying if you are trying to make your web page look and feel like a traditional HMI.
Below is an example of how annoying these page refreshes can be. If you have an image on your page it will flicker as the page is refreshed. In the example below, the page is automatically refreshed by adding a specific meta-tag to the HTML header.
In the simple example above, we placed a single tag value in the file \"IOCounter.htm\". A more advanced option would be to put several tags in this file and format the text into a JSON structure. This would allow you to update several tags on the screen using just one external data file. Be careful though, as you add more tags to an HTML page, the page loading time increases.
A user web page would not be very helpful without allowing the user to modify PLC values. The following HTML page illustrates the simplest way of editing PLC tag values. The special comment field (AWP_In_Variable) at the top tells the PLC which tags are allowed to be modified. You will not be able to edit the tag values unless you include this comment for each tag.
The PLC will not allow you to modify values unless you are logged in. Make sure to log in before navigating to the editor page you just created. The default user name is admin and the default password is blank so you can leave that field empty.
After you have logged-in, browse to the page and go online with the PLC. You should be able to edit the tag value using the web page you just created. Notice how the page flickers when the save button is pressed. This is because a post-back is occurring and the page gets refreshed.
Full-featured web servers have powerful server-side engines that can dynamically generate HTML pages. The Siemens PLC has a small embedded server, but there are still a few server-side things that can be done.
Up to this point, we have been experimenting with integer tag values. If you embed a string tag into your page and include some HTML formatting in the string value, it will render as HTML. Notice below that the string value is not displaying the exact values typed, but rather rendering as HTML:
Another technique that is very powerful for performing server-side logic is Delayed Delivery. This is a technique that uses the WWW Function (in conjunction with DB333) to make the web-server wait before returning a requested page to the user. This allows the PLC to ensure that tag values are properly updated before being rendered on the web page. A typical example would be a recipe editor web page. The user selects a recipe from a dropdown box (which will cause a post-back and a page refresh). We must ensure that the new recipe values have been loaded into the PLC tags before refreshing the page. Normally the compiler automatically assigns a fragment number for each user-generated file. In order to control the delivery of pages (i.e. fragments), we must specify a fragment number in the HTML file as shown below:
Now that we know our file will be fragment #2, we can control the delivery of the page to the browser. Below is a typical rung of ladder logic for implementing the delayed delivery of the page. In my example, the \"continue\" bit does not become true until the recipe loading is complete. In my case, the loading of a recipe required several PLC scans, so I needed to delay the page delivery until the recipe was loaded. Note that the PLC can support several simultaneous connections. If your application will support several simultaneous browser connections, you will have to replicate the code below for each index of the arrays shown. Currently only index 1 is handled in the code below.
Below is an example showing the recipe loading screen. The user selects a recipe from the drop-down which causes a PLC tag to be changed and the browser waits for a post-back from the web server. The PLC detects this change and starts loading the recipe (which takes several PLC scans). The web-server waits for the continue bit to be set before returning the page (fragment) is delayed until the recipe is loaded. This ensures that the tag values injected into the HTML page will be updated with the correct values before being sent to the browser. Below is a demonstration of this in action: