User manual MATRIKON OPC SERVER FOR ALLEN-BRADLEY

[. . . ] Matrikon OPC Server for Allen Bradley User Manual Matrikon OPC Server for Allen Bradley Matrikon OPC Server for Allen Bradley - User's Manual For additional information on this manual, this OPC server, or Matrikon, please contact: Address: Matrikon 1800, 10405 Jasper Avenue Edmonton, Alberta, Canada T5J 3N4 Phone: Fax: Web: Sales: Support: 780-448-1010 780-448-9191 http://www. matrikon. com drivers@matrikon. com support@matrikon. com CONFIDENTIAL The information contained herein is confidential and proprietary to Matrikon. It may not be disclosed or transferred, directly or indirectly, to any third party without the explicit written permission of Matrikon. No part of this document may be reproduced, stored in a retrieval system, translated, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of Matrikon. © Copyright 2001 Matrikon Inc. Page 2 of 49 Matrikon OPC Server for Allen Bradley TABLE OF CONTENTS 1. [. . . ] For example, if there are thousands of numbered items under a "branch", the server might simply provide a single "leaf" representing the range of numeric addresses available. While browsing, the user may apply a number of filter criteria to search for a particular type of item. The syntax of the filter is vendor-specific, but the algorithm recommended by the OPC Foundation follows the same pattern as the Visual Basic "Like" function with respect to item names. For example, "A*" filters out any item names that do not begin with the letter "A". Items may also be filtered by data type and access rights. Choosing a type other than Empty/Default causes the browser to display only those items with the same canonical data type as that selected. For example, selecting write access and deselecting read access will display only items that can be written to, regardless of their read accessibility. Selecting both should filter nothing out. Double-click on a "leaf" and Tag Studio will place the fully qualified item ID for that item in the edit box. If the item ID is a "hint" then change it to a "real" item, following the pattern provided by the hint. Alternatively, right-click on the item and choose "Add to Tag List" to add the item using the previous item's settings. "Add All Items to Tag List" adds every item under the branch. Page 25 of 49 Matrikon OPC Server for Allen Bradley 4. 4. 4 REQUESTED DATA TYPE All OPC items have a native ("canonical") data type. That is to say, there is a default format to the data that the server supplies for an item. When creating OPC items, client applications can specify a requested data type for each item. The OPC server will attempt to covert any data from the item to this format if possible. If the requested and canonical data types are incompatible, then the server will fail to validate the item when it is added. 4. 4. 5 ACTIVE STATE Like groups, OPC items may be active or inactive. See the section on reading real-time values for more information about this setting. 4. 4. 6 VALIDATE THE OPC ITEMS Choose "Validate Tags" from the File menu to check the created items for validity. Ta g Studio will query the OPC server to determine whether the items are correct. A small red X next to an item indicates that it did not validate properly. [. . . ] If the data contains a double quotation mark within itself, then two double quotation marks are used in place. Lines beginning with a hash mark (#) are ignored as comments. Each record in an alias CSV files has the following general format. "Alias Group", "Alias Name", "Item Path", <data type>, <read-only>, <poll always>, <update rate>, <scaling> [, <scaling parameters>. . . ] For example: "North. FIC101", "CV", "Com1. Plc1. 4:0001F", 5, 1, 0, 0, 0 Field "Alias Group" Description The name of the alias group folder to add the alias item to. Periods in this name indicate subfolders below the root (i. e. [. . . ]