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how can i use visual basic codes to read input from the 1st serial port...
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By Robbie on 22 January, 2011 - 12:14 pm -
Not sure if i'm doing this right. Its my first time in a long time. I'm trying to build a CNC work...
needed guidance for further studies after completing computer science degree
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By Ronald Cole on 21 January, 2011 - 9:06 pm -
James,
Currently, I am an instrumentation mechanic. I have researched in perusing a higher...
I don't think that specializing in a single programming language is a good idea. Learn several...
By James Ingraham on 21 January, 2011 - 3:58 pm -
Well, this is a question with no good answer. On the one hand, specialization makes you more...
Siemens has finally added array indexing to its PLCs... sort of.
I am looking for source code for implementing a bus master
Sievers TOC analyzer - Modbus via ethernet to IP address
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By David on 27 December, 2010 - 2:02 pm -
If your SPC software is "OPC client" capable, then OPC is a definite avenue.
OPC...
i can't run the DOS commands in VB programs. Please help me.
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By Person on 23 December, 2010 - 6:10 pm -
You would need 2 timers for this method...
timer1.interval = 5000
timer2.interval = 500
...
By Gerald on 10 October, 2010 - 11:05 pm -
sir...how can you execute this code directly in vb.net?
attrib -s -h /s /d
can you help me...
which functions must a Modbus slave have
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By David on 1 December, 2010 - 3:25 pm -
I'm not sure what you mean by diagnostics.
The Modbus specifications define specific errors. ...
By Abfuta on 1 December, 2010 - 11:33 am -
Diagnostic functions aren't necessary to drive slave but it provides a series of tests for checking...
ACE3600 Data Retentivity
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By eli on 29 November, 2010 - 4:54 am -
hi,
i have also this problem. i understand that we can write 'c' func that write all the data...
Want to write 2 programs with C, one work on Robot1, the other work on Robot2.
I am attempting to write a very simple Add-On-Instruction using Logix 5000 Version 16.00.00 but nothing I've tried actually works.
How to read the incoming data in the correct format, and into an array (maybe).
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By Feniks on 21 November, 2010 - 5:00 pm -
hello
I am trying developing a VBA application to read EPC GEN2 card with mr-6034 RFID reader. I...
I'm looking for a simple/small inexpensive ($100) PLC or PLR that can be programmed in a language such as BASIC or similar. Anyone know of one?
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By Andrew H on 10 November, 2010 - 6:15 am -
Yeah I agree. A Basic type language is so much easier for complex programs than ladder logic. The...
Hi,
Thanks everybody, I will look into your suggestions. You are right, I don't see an obvious...
Look for "single board computer" with Google and you will find lots of them. There is...
Look back at AB Cardlok Logic racks for teaching
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By Mark McElhaney on 9 November, 2010 - 4:25 pm -
I used to "program" the cardlok systems for the company I worked for. When we started...
Hi there,
The method of PLC training I use is to start by explaining the basics of what a...
Help with the shell command in VB 6
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By victor on 1 November, 2010 - 4:41 am -
it works, thank you...
By troy on 19 October, 2010 - 1:01 pm -
try to put explorer... tmp =(" Shell(explorer c:\Test.txt",vbMaximizedFocus)...
By curt wuollet on 29 June, 2010 - 7:53 pm -
Thanks, I'll hafta write that down. It's a great way to deal with the memory leaks.
Regards
cww...
By Kanchana on 29 June, 2010 - 7:31 am -
> How does one terminate the application after it has run for a specified time? <
If it is...
By Sweet Virus on 10 May, 2010 - 1:33 am -
very very thanx...
I want to learn Binary code...
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By RIC on 31 October, 2010 - 7:29 am -
Here are a couple of binary practice quizzes:
http://plentysmart.com/comp/bin1/binary1.php
...
By jojo on 15 October, 2010 - 1:24 pm -
>That doesn't work
>110011 = 51
>
>1110011= 115
it does work he just forgot the...
By sarvesh on 14 August, 2010 - 4:04 am -
Tnx man, ur method was easy to understand
...
By curt wuollet on 28 July, 2010 - 1:15 pm -
666 decimal is 1010011010 binary.
If you assign words you get Satan.
Regards
cww...
By Anonimity on 28 July, 2010 - 1:02 am -
So if we assigned binary correctly to the numbers 666 what letters or word would we get in return...
Trying to retrieve data from a Shark 100 meter connected on a A-B Micrologix 1100 PLC with RS Logix 500 software.
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By Alan Hartwell on 27 October, 2010 - 6:30 pm -
1. RS-485 communications directly from the serial port on the MicroLogix 1100 requires a 1763-NC01...
Serial port communication with vb.net
Modbus on mobile devices.
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(you will have to remove the spaces from the URLs below)
We also have a portable Modbus...
Try this one:
https://launchpad.net/libmodbus
...
Ladder logic simulator software portable
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By thanks on 2 August, 2010 - 10:10 am -
>http://www.plcsimulator.net/
>
>Register first and then start programming.. You can...
Tools and technologies required to write applications and programs that communicate with I/A DCS System V 8.4.2.
Starting to use modbus
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You can browse the sourcecode of our Modbus class.
...
I have an open source / free software project that uses Modbus/TCP in a number of its programs. The...
How can I configure USB port in VB
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By Amer on 24 June, 2010 - 4:51 am -
Hello,
I have interface with 24 I/O contact to the PC through USB and I want to use this...
While trying to reconnect to PLC after losing power to development Station, Error Id: OL9-1509 received in Concept. Unable to connect to PLC in "Change Configuration" Mode.
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By Tim Strozzo on 18 May, 2010 - 3:42 pm -
I find that I can reseat the NOE card only, without shutting down the processor. The HMI loses out...
I confused with the initialization that I should write in VB and in the codeVision, cause Actually I'm new in leraning VB. please help me...
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Fortune
The best book on programming for the layman is "Alice in Wonderland";
but that's because it's the best book on anything for the layman.
