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Search: Posts Made By: Ken Roach
Forum: LIVE PLC Questions And Answers Yesterday, 09:53 PM
Replies: 2
Views: 68
Posted By Ken Roach
That's interesting ! I've only ever seen such...

That's interesting ! I've only ever seen such a name conflict checking within a single project itself.

This was a 1756-DHRIO, not a 1756-RIO ?

Did you have another project open, or...
Forum: LIVE PLC Questions And Answers May 18th, 2018, 03:40 PM
Replies: 17
Views: 450
Posted By Ken Roach
One of the Rockwell commercial engineering guys...

One of the Rockwell commercial engineering guys had a saying about this sort of thing: "No matter how low or how slow you try, a crocodile will never fly".

Cyclic I/O simply isn't a feature that...
Forum: LIVE PLC Questions And Answers May 16th, 2018, 01:04 PM
Replies: 17
Views: 450
Posted By Ken Roach
I think I see where you're getting Instance 51...

I think I see where you're getting Instance 51 (decimal):

S-0-00051

Its an "S" type, so 32768 x 0 = 0
It's a Group 0 parameter, so 4096 x 0 = 0
and its Parameter 51, so the value is just 51....
Forum: LIVE PLC Questions And Answers May 16th, 2018, 07:42 AM
Replies: 2
Views: 143
Posted By Ken Roach
What exact part number of POINT I/O module are...

What exact part number of POINT I/O module are you using ? What problem are you experiencing that makes you want to change the connection type.

You're correct that you can generally configure a...
Forum: LIVE PLC Questions And Answers May 15th, 2018, 01:05 AM
Replies: 8
Views: 179
Posted By Ken Roach
On the computers that the Rockwell BOOTP/DHCP...

On the computers that the Rockwell BOOTP/DHCP utility works on, it works all the time. On the ones it doesn't... it doesn't.

The good news is that the "Disable BOOTP/DHCP" function can also be...
Forum: LIVE PLC Questions And Answers May 14th, 2018, 04:14 PM
Replies: 4
Views: 255
Posted By Ken Roach
When you configure the module for an ordinary...

When you configure the module for an ordinary thermocouple like Type J or Type K, it makes the most sense to also configure it for F or C degrees.

It doesn't really make sense to configure it for...
Forum: LIVE PLC Questions And Answers May 14th, 2018, 03:05 PM
Replies: 4
Views: 255
Posted By Ken Roach
1734-IT2I modules come calibrated from the...

1734-IT2I modules come calibrated from the factory. Why did you think you had to re-calibrate it ?

Did you use a precision millivolt reference that has itself been checked for accuracy ?

How...
Forum: LIVE PLC Questions And Answers May 13th, 2018, 03:17 PM
Replies: 5
Views: 224
Posted By Ken Roach
Version 15 Studio and firmware is about ten years...

Version 15 Studio and firmware is about ten years old. I know for certain it doesn't support EDS-derived module profiles, and it might not even support modern Add-On Profiles.

So if you have...
Forum: LIVE PLC Questions And Answers May 12th, 2018, 09:56 PM
Replies: 5
Views: 227
Posted By Ken Roach
Exactly correct ! The 1761-CBL-AS0x cable is...

Exactly correct !

The 1761-CBL-AS0x cable is very easy to build yourself, because RJ-45 connectors and six-pin Phoenix Combicon plugs are widely available.
...
Forum: LIVE PLC Questions And Answers May 12th, 2018, 04:20 PM
Replies: 6
Views: 375
Posted By Ken Roach
There go my best guesses ! I suppose the...

There go my best guesses !

I suppose the only thing to do is to narrow down what launch context gives you a session of RSWho with identification problems.
Forum: LIVE PLC Questions And Answers May 12th, 2018, 03:26 PM
Replies: 6
Views: 375
Posted By Ken Roach
When you say "studio", do you mean Studio 5000...

When you say "studio", do you mean Studio 5000 Logix Designer, for editing the ControlLogix programs ?

Or do you mean FactoryTalk View Studio, which using RSLinx Enterprise software for...
Forum: LIVE PLC Questions And Answers May 12th, 2018, 03:21 PM
Replies: 5
Views: 227
Posted By Ken Roach
Thank you for posting the complete part number: ...

Thank you for posting the complete part number: 2711-K3A2L1

These are the old PanelView 300 terminals with a small screen and a numeric keypad, not the more-popular PanelView 300 Micro.

The...
Forum: LIVE PLC Questions And Answers May 11th, 2018, 12:21 PM
Replies: 2
Views: 173
Posted By Ken Roach
That's a very fast sampling rate. How long...

That's a very fast sampling rate.

How long will you need to capture and store that data ?

Do you also need to perform analysis on the data in real time ?

Will the data be stored in a...
Forum: LIVE PLC Questions And Answers May 10th, 2018, 08:09 PM
Replies: 8
Views: 489
Posted By Ken Roach
How are the messages being triggered ? Timers ?...

How are the messages being triggered ? Timers ? Counters ? As-fast-as-possible ?

The L82E executes many times faster than the L55, so it's possible that something that worked because the rest...
Forum: LIVE PLC Questions And Answers May 10th, 2018, 03:26 PM
Replies: 5
Views: 641
Posted By Ken Roach
A year later and this project is finally getting...

A year later and this project is finally getting underway.

I ended up purchasing a Hilscher NT50-MPI standalone Ethernet/Profibus DP gateway device.

There's a lot that goes into setting one of...
Forum: LIVE PLC Questions And Answers May 10th, 2018, 02:51 PM
Replies: 2
Views: 162
Posted By Ken Roach
Raise your hand if you've forgotten to disable...

Raise your hand if you've forgotten to disable BOOTP/DHCP !

See ? Everybody does it.

It's been part of my commissioning checklist for years, and *still* I forget sometimes.

Let me tell you...
Forum: LIVE PLC Questions And Answers May 10th, 2018, 01:40 AM
Replies: 16
Views: 656
Posted By Ken Roach
The error message for your Write message...

The error message for your Write message indicates that you've entered an invalid IP address for the target. Check that carefully; every Routing Table entry (the Multi-Hop tab) can be unique.
...
Forum: LIVE PLC Questions And Answers May 9th, 2018, 07:02 PM
Replies: 2
Views: 178
Posted By Ken Roach
You can't make a sub-element of a UDT the...

You can't make a sub-element of a UDT the destination of data from a MSG instruction.

So put it into a tag or array of the datatype you expect (Integer or Real), then MOV the resulting value into...
Forum: LIVE PLC Questions And Answers May 9th, 2018, 01:14 PM
Replies: 5
Views: 328
Posted By Ken Roach
... probably. One of the tricky...

... probably.

One of the tricky compatibility issues has always been the OS and Architecture dependency of ActiveX controls. A project built for FTView 5.0 with an ActiveX has to be re-compiled...
Forum: LIVE PLC Questions And Answers May 9th, 2018, 12:59 PM
Replies: 19
Views: 669
Posted By Ken Roach
Thanks for those Wireshark captures and diagrams...

Thanks for those Wireshark captures and diagrams !

I'm not convinced that the ARP 0.0.0.0 is a cause of a connection drop, rather than a symptom.

You can see the low-level Ethernet packets...
Forum: LIVE PLC Questions And Answers May 9th, 2018, 12:03 PM
Replies: 4
Views: 172
Posted By Ken Roach
In general, when you're setting up automation...

In general, when you're setting up automation devices for a static IP network, you need to have your computer set for an address on that static IP network.

While the BOOTP/DHCP Utility can...
Forum: LIVE PLC Questions And Answers May 8th, 2018, 09:18 PM
Replies: 30
Views: 1,387
Posted By Ken Roach
Be sure you're comparing the PV+ 7 Standard and...

Be sure you're comparing the PV+ 7 Standard and the PV+7 Performance separately, and that you have up-to-date info.

The Standard, for example, supports 50 screens and 500 alarms with FTView ME...
Forum: LIVE PLC Questions And Answers May 8th, 2018, 08:55 PM
Replies: 19
Views: 669
Posted By Ken Roach
Because your unmanaged switch is unmanaged,...

Because your unmanaged switch is unmanaged, you're probably only seeing the broadcast packets.

"ARP for address 0.0.0.0" is a duplicate address check packet called an ARP Probe...
Forum: LIVE PLC Questions And Answers May 8th, 2018, 08:00 PM
Replies: 19
Views: 669
Posted By Ken Roach
What exact model of N-Tron, and what exact model...

What exact model of N-Tron, and what exact model of unmanaged switch ?
Forum: LIVE PLC Questions And Answers May 7th, 2018, 12:59 PM
Replies: 2
Views: 228
Posted By Ken Roach
Do a cross-reference on the 51-word message...

Do a cross-reference on the 51-word message control block to be sure that there's nothing being written to it and corrupting the message configuration.

Does the controller have an HMI or anything...
Showing results 1 to 25 of 500

 
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