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Search: Posts Made By: Ken Roach
Forum: LIVE PLC Questions And Answers Yesterday, 04:43 PM
Replies: 2
Views: 159
Posted By Ken Roach
What sort of loads are you lifting ? Anything...

What sort of loads are you lifting ? Anything safety related or overhead ?

How closely are the drive axes coupled; you refer to them as "conveyors"; is the horizontal axis lifted by the...
Forum: LIVE PLC Questions And Answers November 16th, 2018, 07:16 PM
Replies: 2
Views: 111
Posted By Ken Roach
Welcome to the PLCTalk forum community ! ...

Welcome to the PLCTalk forum community !

First, the technical answer: no, you cannot use a PLC-5 Scanner or a 1747-SN Scanner to run 1756 I/O with a 1756-DHRIO module as an Adapter.

Another...
Forum: LIVE PLC Questions And Answers November 16th, 2018, 05:06 PM
Replies: 7
Views: 247
Posted By Ken Roach
Yup; the first 12 inputs can be used with HSC or...

Yup; the first 12 inputs can be used with HSC or with interrupts for pulse-catching or discrete input interrupt features. You're on the right track !
Forum: LIVE PLC Questions And Answers November 16th, 2018, 01:22 PM
Replies: 17
Views: 442
Posted By Ken Roach
Sometimes I still have that dream where I was...

Sometimes I still have that dream where I was writing beautifully crafted, carefully illustrated, well-tested Knowledgebase articles that thousands of people relied on for guidance and clarity.
...
Forum: LIVE PLC Questions And Answers November 16th, 2018, 01:12 PM
Replies: 21
Views: 473
Posted By Ken Roach
Good; this is exactly what you should be doing. ...

Good; this is exactly what you should be doing.

The activity / status of an OPC or DDE topic should not be affected by the RSWho Autobrowse function. Those topics are defined and already...
Forum: LIVE PLC Questions And Answers November 16th, 2018, 12:12 AM
Replies: 3
Views: 104
Posted By Ken Roach
Please don't. Please don't. Please...

Please don't.

Please don't.

Please don't.

Don't try to package MSG instructions into an AOI in a system that principally does telemetry.

Don't try to do something obscure and...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 07:28 PM
Replies: 5
Views: 151
Posted By Ken Roach
Wait, what ? Are there PanelView terminals...

Wait, what ?

Are there PanelView terminals in North Carolina whose communication traffic to a PLC in North Carolina has to be routed through a trans-Atlantic cable and a router in Denmark ?

Or...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 07:00 PM
Replies: 4
Views: 106
Posted By Ken Roach
If this is a "generic TCP/IP" device that doesn't...

If this is a "generic TCP/IP" device that doesn't support the Rockwell CIP application protocol for reading and writing objects and tags in the ControlLogix, and you're trying to do a "raw socket"...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 06:42 PM
Replies: 4
Views: 106
Posted By Ken Roach
Welcome to the PLCTalk forum community ! ...

Welcome to the PLCTalk forum community !



What exactly is this device or software ? Is it advertised to read and write to the ControlLogix ?

What data are you trying to exchange between...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 12:56 PM
Replies: 5
Views: 206
Posted By Ken Roach
When "sorting out third party compatibility...

When "sorting out third party compatibility problems with networked devices that all get blamed on Allen Bradley" was my full time job, I was always very relieved when I heard there would be a...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 11:19 AM
Replies: 5
Views: 206
Posted By Ken Roach
Hilscher puts their NetX products into so many...

Hilscher puts their NetX products into so many other manufacturer's products that it makes sense that they would make everything editable.

To my mild surprise, the Hilscher configuration tool...
Forum: LIVE PLC Questions And Answers November 14th, 2018, 12:52 AM
Replies: 5
Views: 206
Posted By Ken Roach
OT: Configurable Identity Objects in EtherNet/IP

I discovered today that the Hilscher NT100 network gateways give you full control over the values that are used for the EtherNet/IP CIP Identity Object.

The defaults identify the device as a...
Forum: LIVE PLC Questions And Answers November 13th, 2018, 12:46 PM
Replies: 8
Views: 408
Posted By Ken Roach
I ended up building that application with a DSPSX...

I ended up building that application with a DSPSX that I had in my lab, and it handily out-ran the existing custom devices, due to some choices made by the firmware and PLC program authors that...
Forum: LIVE PLC Questions And Answers November 13th, 2018, 11:59 AM
Replies: 6
Views: 133
Posted By Ken Roach
Thanks for that information. Can you point...

Thanks for that information.

Can you point to the Aerodaq RSLogix 5000 example code or reference manual ?

Does the Aerodaq module have an existing connection to another controller ?

Is it...
Forum: LIVE PLC Questions And Answers November 13th, 2018, 11:31 AM
Replies: 6
Views: 133
Posted By Ken Roach
What kind of recorder ? Is this a Rockwell...

What kind of recorder ?

Is this a Rockwell device, or a device with an Add-On Profile, or a device with an EDS file, or a Generic Ethernet device ?

While all of those use the same protocols to...
Forum: LIVE PLC Questions And Answers November 11th, 2018, 09:12 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
Sure. I'm particularly touchy about the...

Sure.

I'm particularly touchy about the topic of counterfeit software, even for educational purposes, because I was a front-line support employee for Rockwell for many years and those un-paid...
Forum: LIVE PLC Questions And Answers November 11th, 2018, 07:48 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
100% of the "laptops pre-loaded with RSLogix...

100% of the "laptops pre-loaded with RSLogix software" on eBay have pirated activations and are being sold as part of felony copyright infringement conspiracies. It's been a while since Rockwell...
Forum: LIVE PLC Questions And Answers November 11th, 2018, 01:11 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
I didn't even notice the typo ! There was a...

I didn't even notice the typo !

There was a very short-lived product with the "1757" bulletin number, called the ProcessLogix. But it had different controller numbers and Honeywell-joint-venture...
Forum: LIVE PLC Questions And Answers November 11th, 2018, 02:26 AM
Replies: 21
Views: 2,030
Posted By Ken Roach
An undamaged 1756-L6x or -L7x has a very low risk...

An undamaged 1756-L6x or -L7x has a very low risk of "bricking" the controller because they have enough memory to load and verify blocks of firmware without writing to nonvolatile memory live like...
Forum: LIVE PLC Questions And Answers November 10th, 2018, 02:16 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
For firmware loading there's no reason to have...

For firmware loading there's no reason to have the RAM backup battery, so disconnect it.

I just checked my blue-jacketed 1756-BA2 battery that the controller considers dead (solid red BAT LED when...
Forum: LIVE PLC Questions And Answers November 10th, 2018, 02:09 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
The battery light flickering is not normal. In...

The battery light flickering is not normal. In general, it's OFF when the battery is in good condition, then latches on solid when the battery voltage drops below what will keep the RAM backed up....
Forum: LIVE PLC Questions And Answers November 10th, 2018, 01:44 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
Interesting ! In general if there's a...

Interesting !

In general if there's a configuration problem, the transfer won't start at all.

You could have a damaged controller, or a damaged backplane, or an unreliable network connection.
...
Forum: LIVE PLC Questions And Answers November 10th, 2018, 01:21 PM
Replies: 21
Views: 2,030
Posted By Ken Roach
Welcome to the PLCTalk Forum community ! The...

Welcome to the PLCTalk Forum community !

The original post mentioned an easy-to-confuse communication path because the 1756-L7x controllers have a USB port that makes it very convenient to flash...
Forum: LIVE PLC Questions And Answers November 9th, 2018, 12:08 PM
Replies: 21
Views: 779
Posted By Ken Roach
Not sure what's going on with the screen shot. ...

Not sure what's going on with the screen shot.

I remember your initial post on this, and there's sort of a moving target because you've reconfigured and reloaded and replaced multiple parts of the...
Forum: LIVE PLC Questions And Answers November 8th, 2018, 07:45 PM
Replies: 21
Views: 779
Posted By Ken Roach
Turck makes quite a few devices. The most...

Turck makes quite a few devices. The most popular of their DeviceNet modular I/O adapters are the BL20 (open style) and BL67 (washdown) modular adapters.

The fact that the 1756-DNB is not...
Showing results 1 to 25 of 500

 
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