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Search: Posts Made By: ushidayo
Forum: LIVE PLC Questions And Answers October 29th, 2009, 06:53 AM
Replies: 27
Views: 2,977
Posted By ushidayo
Hi, I don't think the polarity change L-N...

Hi,

I don't think the polarity change L-N is the cause of your flowmeter problem. The DC side of the power supply doesn't need to be earthed if it is only being used for analogue circuits but the...
Forum: LIVE PLC Questions And Answers July 28th, 2009, 01:32 AM
Replies: 15
Views: 6,760
Posted By ushidayo
Have you changed the model in Project settings?

You're only choice is to use Quick Designer 3.7 as the program cannot be imported into ProDesigner.

Have you changed the model number setting in the QD3.7 project settings? the new model type...
Forum: LIVE PLC Questions And Answers June 5th, 2009, 06:30 AM
Replies: 3
Views: 1,132
Posted By ushidayo
Using connectors with CC-Link doesn't normally...

Using connectors with CC-Link doesn't normally cause a problem. From the photos it appears that proper CC-Link cable isn't being used. It is important to use cable that meets the CC-Link...
Forum: LIVE PLC Questions And Answers May 18th, 2009, 04:41 AM
Replies: 4
Views: 2,599
Posted By ushidayo
Sorry for the late reply. Windows 2000...

Sorry for the late reply.

Windows 2000 isn't your problem (I have used it with DOX10 before). But I thought that Windows 2000 uses a file called "config.nt" instead of "config.sys". This file...
Forum: LIVE PLC Questions And Answers May 18th, 2009, 04:36 AM
Replies: 15
Views: 2,301
Posted By ushidayo
So for V/F Control: Rotational vibration causes...

So for V/F Control: Rotational vibration causes change in load torque causes speed change causes more vibration.

and for vector Control: Rotational vibration causes change in load torque which is...
Forum: LIVE PLC Questions And Answers May 17th, 2009, 09:15 AM
Replies: 15
Views: 2,301
Posted By ushidayo
I understand that the required voltage to...

I understand that the required voltage to maintain the motor flux is pretty much constant independent of the frequency. Vector control methods incorporate this base voltage plus a voltage calculated...
Forum: LIVE PLC Questions And Answers May 17th, 2009, 01:22 AM
Replies: 15
Views: 2,301
Posted By ushidayo
Please can you explain what is causing these...

Please can you explain what is causing these torque ripples? If the rotated equipment has a "natural vibration" how does the V/F control amplify the vibrations when the vector control doesn't?
Forum: LIVE PLC Questions And Answers May 16th, 2009, 01:56 AM
Replies: 15
Views: 2,301
Posted By ushidayo
Vibration when using V/F Control

Here is a question for the variable speed drive experts:wizard:

Why will a drive using proportional Volts/frequency control cause or amplify vibrations in the rotated equipment when the same...
Forum: LIVE PLC Questions And Answers May 16th, 2009, 01:42 AM
Replies: 4
Views: 2,599
Posted By ushidayo
Add the following line to your Config.sys (or...

Add the following line to your Config.sys (or more likely, config.nt) file.

DEVICE=\DOX10.SYS\V24.SYS R2048 S255 Ca Abbbb Icc

Ca is the COM port number C1,C2,C3 or C4
Abbbb if COM3 put A03E8...
Forum: LIVE PLC Questions And Answers April 8th, 2009, 05:08 AM
Replies: 7
Views: 4,487
Posted By ushidayo
I think the program was probably written using GX...

I think the program was probably written using GX IEC Developer. GX IEC Developer is very different from GX Developer and the files are not compatible. It looks like you need to purchase GX IEC...
Forum: LIVE PLC Questions And Answers February 10th, 2009, 05:35 AM
Replies: 12
Views: 2,205
Posted By ushidayo
...and for port numbers for unconnected devices

If you want to check the assignment of all port numbers, even for devices which aren't currently connected to the PC, try the following at the command prompt or in a batch file;

cd c:\
set...
Forum: LIVE PLC Questions And Answers September 5th, 2007, 07:54 AM
Replies: 3
Views: 1,913
Posted By ushidayo
With this module, the communications and the CPU...

With this module, the communications and the CPU scan are asynchronous. The CPU tells the comms module to send a telegram and the comms module tells the CPU when it has finished, or (if receiving a...
Forum: LIVE PLC Questions And Answers September 4th, 2007, 09:59 AM
Replies: 3
Views: 1,913
Posted By ushidayo
Protocol specification

I might be able to help as I have written code for this comms module before. To be able to understand what you are trying to achieve, it is best to start with the format of the telegrams that are...
Forum: LIVE PLC Questions And Answers June 16th, 2006, 01:49 AM
Replies: 52
Views: 5,381
Posted By ushidayo
I take this idea of having alarms for every...

I take this idea of having alarms for every possible situation with a huge pinch of salt. 1. The number of characters for an alarm comment on a panelview, or whatever, isn't enough to give a...
Forum: LIVE PLC Questions And Answers April 25th, 2006, 11:08 PM
Replies: 26
Views: 7,601
Posted By ushidayo
What is ProDev?

What is ProDev?
Forum: LIVE PLC Questions And Answers April 25th, 2006, 11:07 PM
Replies: 26
Views: 7,601
Posted By ushidayo
I didn't mean code generation, I meant automatic...

I didn't mean code generation, I meant automatic generation of documentation. Prodef had the ability to store standard documentation for the classes the user made, and then generate complete...
Forum: LIVE PLC Questions And Answers April 23rd, 2006, 11:31 PM
Replies: 26
Views: 7,601
Posted By ushidayo
The part of ProDef which showed a great deal of...

The part of ProDef which showed a great deal of promise wasn't the code generation but the automatic generation of documentation based on the process model. Perhaps you could do something similar...
Forum: LIVE PLC Questions And Answers April 7th, 2006, 02:56 AM
Replies: 8
Views: 2,292
Posted By ushidayo
All the systems I've seen in Japan use NPN...

All the systems I've seen in Japan use NPN sensors and the DC24V is left floating. Machine safety doesn't seem to be such a high priority here as it is in the west. No lockable isolators and...
Forum: LIVE PLC Questions And Answers April 7th, 2006, 02:45 AM
Replies: 2
Views: 1,716
Posted By ushidayo
Which type of Mitsubishi PLC are you talking...

Which type of Mitsubishi PLC are you talking about? The user manuals are normally a good place to start looking for information. You can download the manuals free of charge from Mitsubishi...
Forum: LIVE PLC Questions And Answers March 31st, 2006, 12:35 AM
Replies: 4
Views: 1,029
Posted By ushidayo
I might be wrong, but I think the answer is the...

I might be wrong, but I think the answer is the bus also supplies electrical power (typically 5V DC) to the CPU and I/O cards.
Forum: LIVE PLC Questions And Answers January 20th, 2006, 09:21 AM
Replies: 17
Views: 3,456
Posted By ushidayo
Could you describe your application in a little...

Could you describe your application in a little more detail? You mentioned a blender, are you using the load cells to measure the weight of a blending vessel? a brief description of the process could...
Forum: LIVE PLC Questions And Answers January 20th, 2006, 09:14 AM
Replies: 3
Views: 1,426
Posted By ushidayo
There are various versions of RSLinx, not all...

There are various versions of RSLinx, not all will allow DDE/OPC communications. Check the Rockwell Software website for more details. If you register on the site, I'm sure you will find examples of...
Forum: LIVE PLC Questions And Answers January 19th, 2006, 06:01 PM
Replies: 40
Views: 4,231
Posted By ushidayo
The current going rate for expenses excluding...

The current going rate for expenses excluding hotel and travel is 15,700 yen per day. If you are working in the centre of a big city in Japan this is enough. If you are working in a small town, it's...
Forum: LIVE PLC Questions And Answers January 19th, 2006, 08:34 AM
Replies: 40
Views: 4,231
Posted By ushidayo
Concerning expenses, go for a fixed rate...

Concerning expenses, go for a fixed rate excluding the hotel fee. Any receipts you receive (e.g. restaurants, bars, etc) will be written in Japanese, so this could lead to problems when you return...
Forum: LIVE PLC Questions And Answers January 19th, 2006, 07:05 AM
Replies: 9
Views: 3,189
Posted By ushidayo
A very basic idea is to use a block of registers,...

A very basic idea is to use a block of registers, one for each conveyor. As a container is put on the first conveyor it is scanned and the ID number is copied to the first register. The conveyor is...
Showing results 1 to 25 of 200

 
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