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NAPOPC DA Server
 
 
     
     
19 Why does the COM port which greater than ten still can't connect normally? (The document notified the modification of this on version 2.15) ?  
     
18 What the tag limitation in each group when connects through Modbus protocol?  
     
17 Why the NAPOPC DA Server show error value when I use Modbus Utility setting address number?  
     
16 How to develop OPC Client under environment of Microsoft .Net ?  
     
15 How to solve NAPOPC DA Server show "Bad" using OPCLink connect to InTouch?  
     
14 How about the limit of NAPOPC DA Server for tag number using Modbus communication?  
     
13 The "run-time errors '91' "message occurs while VB client demo connect to the NAPOPC DA Server?  
     
12 Do NAPOPC DA Server support PCI card module?  
     
11 How to hide the window of NAPOPC DA Server to prevent unexpected termination by other users?  
     
10 The NAPOPC DA Server shows BAD status with the I-7017 module? How to fix it?  
     
9 The NAPOPC DA Server shows OK for only one second and again shows bad status. How to fix it?  
     
8 The NAPOPC DA Server individually detects all modules, but cannot simultaneously detect the second and first modules on the network. How to fix it?  
     
7 The "Error connecting to OPC 2.0 Server Browser. Class not registered." message occurs while connecting to the NAPOPC DA Server. How to fix it?  
     
6 On Windows 95, we received problems during the NAPOPC DA Server installation. The error "File NapOPCSvr is linked with no exist Export-OLE32.DLL: CoInitalizeEx" message pops up when starting up. How to fix it?  
     
5 How to make sure that the NAPOPC DA Server loads the correct configuration file?  
     
4 What is the performance of NAPOPC DA Server?  
     
3 After upgrading a NAPOPC DA Server, why did I receive the following error message box...
Box Title: NAPOPCSvr
Box Body: Unexpected file format.
 
     
2 NAPOPC DA server uses 95-99% of CPU time independent of the polling rate that I specify in lookout. Is this a known problem and do you have a method to fix this?  
     
1 The digital input channel shows "-1" which displays within our OPC client software when using NAPOPC DA server and the channel with "ON" condition. This reading changes from 0 to -1 (OFF & ON) instead of 0 to 1. Other OPC server software displays these numerals correctly.  
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