What is the role of interfaces IOPCServer, IOPCDataItem, IOPCGroup in OPC ( OLE for process control)

Posted by Shailesh Jaiswal on Stack Overflow See other posts from Stack Overflow or by Shailesh Jaiswal
Published on 2010-04-17T10:03:15Z Indexed on 2010/04/17 10:13 UTC
Read the original article Hit count: 516

Filed under:

opcode

|

interface

|

opc

I am currently new in OPC ( OLE for process control). I want to know about the interfaces IOPCServer, IOPCDataItem, IOPCGroup interfaces in the OPC. What are they used for & what is their role in terms of OPC Client & OPC Server & what methods & properties these interfaces conatins ? Can you provide me the answer for the above questions or can you provide me the link through which I can get the knowledge of the above topics ?

© Stack Overflow or respective owner

Related posts about opcode

Invalid Opcode 0000

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
At random times (usually when watching a movie in XBMC), the computer locks up. I can still sometimes SSH in and get the 'dmesg' output before that locks up too. A hard reboot is usually required to get things going again. I have cut out the date/time/server columns for easier reading, please do ask… >>> More
ruby: invalid opcode

as seen on Server Fault - Search for 'Server Fault'
There's a fairly complex application than runs on two VMs (on Xen). Both VMs run CentOS 6.2 with the exact same packages and configuration for every application running (minus networking which is different). SELinux is disabled on both. On machine A the application builds perfectly. On machine B… >>> More
x86 opcode alignment references and guidelines

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm generating some opcodes dynamically in a JIT compiler and I'm looking for guidelines for opcode alignment. 1) I've read comments that briefly "recommend" alignment by adding nops after calls 2) I've also read about using nop for optimizing sequences for parallelism. 3) I've read that alignment… >>> More
APC and "apc.gc_ttl" :: How Low is Too Low?

as seen on Server Fault - Search for 'Server Fault'
I currently have my apc.gc_ttl set to 600 to help keep fragmentation down. Since apc.gc_ttl just sets the time on cache for garbage collection, I don't see any harm in keeping it this low. However, I'm new to APC, and have seen many configurations online that use a 3600 TTL, which seems quite long… >>> More
How to access the remote OPC server programatically ?

as seen on Stack Overflow - Search for 'Stack Overflow'
I have downloaded & installed the OPCDA.NET client component evaluation & XMLDA.NET client component evaluation. It provides some C# samples for browsing the available OPC Server, connecting to the OPC server, & browsing the available items on the server. I know the programatic way in… >>> More

Related posts about interface

Outbound traffic being blocked for MIP/VIPped servers (Juniper SSG5)

as seen on Server Fault - Search for 'Server Fault'
As we've been having some problems with sporadic packet loss, I've been preparing a replacement router (also an SSG5) for our current Juniper SSG5. I've setup the new SSG5 identically to the old one. We have a /29 IP range with a single IP setup as a MIP map to a server and two others being used… >>> More
Allowing connections initiated from outside

as seen on Server Fault - Search for 'Server Fault'
I've got an old Juniper SSG5 running ScreenOS 5.4.0r6.0. Once a day, more or less, it'll start randomly dropping packets at a rate of ~5-10%. We currently solve this issue by simply rebooting the unit, after which it resumes working in perfect condition. As this error has started appearing randomly… >>> More
Can we define an interface within an interface?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi , I like to know can we define an interface within an interface. like interface abc { void show(); public interface xyz { void read(); } } This was question asked in interview. Any real time use of this. >>> More
Juniper SSG-5 subinterface vlan routing to the internet

as seen on Server Fault - Search for 'Server Fault'
I'm unable to get a brand new Juniper SSG-5 with latest 6.3.0r05 firmware routing to the internet from a subinterface I created on bgroup0 setup as vlan2 (bgroup0.1 on "wifi" zone). When connected on the default vlan it gets on the internet just fine. When I switch to vlan2 I'm unable to get to the… >>> More
How to change mouse pointer icon in Xfce Debian 7 Wheezy?

as seen on Super User - Search for 'Super User'
I copied the cursor theme (oxy-neon or Oxygen Neon) to /usr/share/icons and from Applications Menu - Settings - Mouse, I am able to see the new theme. I clicked on it and the pointer doesn't change. However the text typing icon ('I'), busy icon, hand icon, and resize window icons got changed. The… >>> More