Search results for query: *

Hi friends, I am working on an application which involves serial port communication with stepper motors. Now I am sending queries to the PLC via modbus protocol. There is one query in which I ask the PLC for the current position of the moving motor and display it in a current position textbox...

Hi friends, I have been working on an activeX control which works on serial port communication. Now I have completed the project and created its setup.exe using Visual studio 6 -> Tools -> Package and Deployment Wizard. Then I installed the control in another PC and in a new project included the...

Hi friends, I was trying to use vb.net control in VB6, I followed the instructions and got it working. Heres wat i did: 1. Installed windows interop forms toolkit application 2. Created a control in VB.net using Visual_studio_team_system_2008_team_suite 3. Built the project 4. Opened new VB6...

Hi friends, I have been working on an application in VB.net, after I finished the application now the customer wants its ActiveX control not the standard exe that I made. So I want to know that is there anyway tht I can create an ActiveX in Vb.net ?? I am using Visual Studio 2008. I did some...

Hi friends, I have been working on a project that communicates with PLC machines via modbus protocol. Now I have completed the application and sent the EXE file to the customer. But he says he wants ActiveX exe not the standard exe that I sent him. So I need your suggestions on how to do this as...

Hi friends, I am working on an application in which I have to send a data of a text file to a PLC machine. Now the convention is that send start of file (0x02) send data bytes (file data) send end of file (0x03) Now I dont have any idea that how to send the STX and ETX before and...

Hi friends, I am currently working on an application which requires reading, writing and modifying data from a TEXT file. I have searched a lot but was not able to find a simple way to achieve this. I have to use a standard VB form with textboxes for ths text file opearitions. So anyone who has...

Thnks Budius for reply.. I think my question was quite specific that the application should not be accessible (i.e. No controls can be accessed) until it gets any reply from PLC. till then it only shows the waitcursor. I hope now my question is clearer than b4.

Hi friends..I m working on an application on serial port communication with PLC machine. Now this communication is only done with one PLC at a time. So I m sending a query to PLC and untill its responds back the application goes into wait mode. i.e. no other operations can be done, and an...

Thanks alot Budius... vbCrLf works fine

Hi friends, I m working on an application which communicates with PLC machine using Modbus protocol. Now i m able to generate and communicate a modbus data frame with PLC the only problem that i m facing is that in all the data frames of modbus the last ascii characters should be Carriage return...

Hi friends, I m new to this forum and also to VB.net programming. In an application Modbus protocol is used and I have generate LRC checksum for that. But I am stuck at conversion of a Long type data to Byte type. The long type data is for example : 4294967197. I tried all the following...