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Search: Posts Made By: AutomaticLeigh
Forum: LIVE PLC Questions And Answers November 9th, 2015, 07:16 AM
Replies: 15
Views: 1,903
Posted By AutomaticLeigh
Or put the pressure switch on the pump discharge....

Or put the pressure switch on the pump discharge.

Depending on your installation, the normal running pressure at the pump suction could be lower than atmospheric. Therefore when the line is empty,...
Forum: LIVE PLC Questions And Answers September 30th, 2014, 05:24 AM
Replies: 6
Views: 911
Posted By AutomaticLeigh
Try gCommand.Execute("Display Robot")

Try
gCommand.Execute("Display Robot")
Forum: LIVE PLC Questions And Answers January 22nd, 2014, 12:25 PM
Replies: 20
Views: 2,523
Posted By AutomaticLeigh
I have done this using a Mitsubishi E-series HMI...

I have done this using a Mitsubishi E-series HMI as a bridge. In my case, an E1041 was already there, so no additional cost. The HMI can have two drivers, so one talks to the Mitsi, the other to the...
Forum: LIVE PLC Questions And Answers October 2nd, 2013, 09:54 AM
Replies: 20
Views: 2,590
Posted By AutomaticLeigh
I thought the manuals were pretty good. You need...

I thought the manuals were pretty good. You need the BASIC Language Reference Manual 1746-RM001A-US, which has example code for all the commands. You don't need an EEPROM, it will work fine from RAM....
Forum: LIVE PLC Questions And Answers March 1st, 2013, 12:18 PM
Replies: 20
Views: 4,158
Posted By AutomaticLeigh
Most flowmeter signals I've come across are...

Most flowmeter signals I've come across are pretty noisy. The E+H promags have output damping, which I think the default is 1 second. If your variations are of that sort of order, I doubt if you're...
Forum: LIVE PLC Questions And Answers October 25th, 2012, 10:50 AM
Replies: 17
Views: 4,512
Posted By AutomaticLeigh
As far as I can see, the reference manual does...

As far as I can see, the reference manual does not say how the PID algorithm is calculated, so I can't see how to get from a required gain to a SG value. It might be possible to find the scaling you...
Forum: LIVE PLC Questions And Answers October 22nd, 2012, 10:26 AM
Replies: 17
Views: 4,512
Posted By AutomaticLeigh
You need to get a manual for the controller, as...

You need to get a manual for the controller, as different controllers can use quite different set up.

Proportional gain is dimensionless, but some controllers use proportional band, usually quoted...
Forum: LIVE PLC Questions And Answers December 2nd, 2011, 11:21 AM
Replies: 1
Views: 939
Posted By AutomaticLeigh
Slc500 mtbf

Can anyone point me towards some failure rate data for SLC500 modules. I think I used to have some, but now I need it, I can't find it. I found some data for ControlLogix on Rockwell's website, but I...
Forum: LIVE PLC Questions And Answers November 25th, 2011, 11:48 AM
Replies: 6
Views: 1,480
Posted By AutomaticLeigh
If you're referring to the characteristic...

If you're referring to the characteristic impedance of the cable, it's completely irrelevant to 4-20mA applications, unless you have some signals with astonishingly high frequency.
Forum: LIVE PLC Questions And Answers November 18th, 2011, 12:12 PM
Replies: 19
Views: 4,003
Posted By AutomaticLeigh
I guess the answer is in your post. When the pump...

I guess the answer is in your post. When the pump has something to get hold of, the flow is high, which pulls down the suction pressure due to losses on the suction side. Cavitation then occurs,...
Forum: LIVE PLC Questions And Answers November 17th, 2011, 04:27 PM
Replies: 19
Views: 4,003
Posted By AutomaticLeigh
I don't know if it's applicable in this case, but...

I don't know if it's applicable in this case, but one reason to use a restriction on the pump discharge is if the NPSH requirement is not met. Because the pressure is higher at the discharge, it can...
Forum: LIVE PLC Questions And Answers June 10th, 2011, 07:49 AM
Replies: 1
Views: 1,133
Posted By AutomaticLeigh
The PFA-1U51 works OK with FA-2J I think you...

The PFA-1U51 works OK with FA-2J

I think you need cable PFA-1A51 to connect to the PLC, or PFA-1A11 to connect to the program loader. The cable to the PC is PFA-1A54, but I think I made my own...
Forum: LIVE PLC Questions And Answers May 15th, 2011, 03:45 PM
Replies: 18
Views: 4,089
Posted By AutomaticLeigh
For large tanks, if there is an outlet flowmeter,...

For large tanks, if there is an outlet flowmeter, I use cascade control, with the inner loop controlling flow, and the outer loop controlling level. The level controller provides a setpoint to the...
Forum: LIVE PLC Questions And Answers May 5th, 2011, 04:54 AM
Replies: 0
Views: 836
Posted By AutomaticLeigh
Bead Interconnect Programming Cord

I received a PM asking about the pinout for a Bead Interconnect terminal programming cord. The pinout for a CT10 is as shown below. I believe the the CT1 has a 12-pin connector for Port 2, in which...
Forum: LIVE PLC Questions And Answers October 19th, 2010, 12:23 PM
Replies: 1
Views: 1,319
Posted By AutomaticLeigh
In RSView32 Project Manager, go to Alarms | Alarm...

In RSView32 Project Manager, go to Alarms | Alarm Setup | Severities tab, and select Internal Bell. This uses the sound for Windows Exclamation, so you can change the sound from Windows | Control...
Forum: LIVE PLC Questions And Answers October 16th, 2010, 05:28 AM
Replies: 14
Views: 5,533
Posted By AutomaticLeigh
Maybe put one of these across the transmitter? ...

Maybe put one of these across the transmitter?

http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=6284232
Forum: LIVE PLC Questions And Answers July 13th, 2009, 03:28 PM
Replies: 6
Views: 5,217
Posted By AutomaticLeigh
The Wago network coupler generates fault codes by...

The Wago network coupler generates fault codes by flashing the I/O LED, though to be honest I've never found them very helpful. If the OVERFL light is flashing, the unit may be showing a fault code....
Forum: LIVE PLC Questions And Answers July 11th, 2009, 06:45 AM
Replies: 4
Views: 1,420
Posted By AutomaticLeigh
Most DC-DC converters have a 2:1 input range,...

Most DC-DC converters have a 2:1 input range, "wide range" is generally 4:1.
36-72 volts is from the telecoms industry (nominal 48V battery), not a theoretical limit. RS Components list some units...
Forum: LIVE PLC Questions And Answers March 10th, 2009, 04:18 AM
Replies: 3
Views: 1,408
Posted By AutomaticLeigh
You need manual 1746-UM004B-EN-P. Look at the...

You need manual 1746-UM004B-EN-P. Look at the jumper settings for JW4. The factory default config powers up to command mode, but you can set the jumper to run the program in RAM.
Forum: LIVE PLC Questions And Answers November 6th, 2008, 05:57 AM
Replies: 2
Views: 1,892
Posted By AutomaticLeigh
RSView32 has some system tags that may do what...

RSView32 has some system tags that may do what you want, e.g.

system\ComStatusString1
system\ComErrorString1

Can't help with the other systems, but I would assume they have something similar.
Forum: LIVE PLC Questions And Answers April 27th, 2008, 09:31 AM
Replies: 18
Views: 14,993
Posted By AutomaticLeigh
When flood testing a system, I have seen delays...

When flood testing a system, I have seen delays of over 2 hours. I believe the phone companies say delivery "within 24 hours". Also messages may not be delivered in order.
Forum: LIVE PLC Questions And Answers March 20th, 2008, 01:33 PM
Replies: 14
Views: 2,749
Posted By AutomaticLeigh
You can import data from Logix500 easy enough....

You can import data from Logix500 easy enough. Open the tag database editor in RSView32. In the menu bar, select Edit | Other Databases. Browse to where your project is, job done. Haven't tried it...
Forum: LIVE PLC Questions And Answers February 25th, 2008, 01:01 PM
Replies: 10
Views: 1,619
Posted By AutomaticLeigh
Yeah, well I'm an old guy. It works. Why spend...

Yeah, well I'm an old guy. It works. Why spend money on something you don't need?
Forum: LIVE PLC Questions And Answers February 25th, 2008, 11:54 AM
Replies: 10
Views: 1,619
Posted By AutomaticLeigh
What version do you have? I seem to recall...

What version do you have?

I seem to recall that in RSV32 v6.4 (can't remember Messenger version) you set up SMS as a pager. You don't need a GSM modem, an ordinary modem will do, but you need...
Forum: LIVE PLC Questions And Answers February 21st, 2008, 01:52 PM
Replies: 11
Views: 1,643
Posted By AutomaticLeigh
Assuming these are centrifugal pumps, I would run...

Assuming these are centrifugal pumps, I would run them at the same speed.

With pumps in parallel, you just add the pump Q-h curves horizontally, in series add them vertically. As long as you...
Showing results 1 to 25 of 102

 
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