You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > Search Forums

Showing results 1 to 25 of 500
Search took 0.14 seconds.
Search: Posts Made By: Ken Roach
Forum: LIVE PLC Questions And Answers February 21st, 2020, 05:45 PM
Replies: 15
Views: 325
Posted By Ken Roach
Thank you for clarifying: "Ethernet is not an...

Thank you for clarifying: "Ethernet is not an option because the SLC-5/04's don't have Ethernet" makes more sense.

I would prefer a more detailed boundary condition than "Adding money to an old...
Forum: LIVE PLC Questions And Answers February 21st, 2020, 03:50 PM
Replies: 15
Views: 325
Posted By Ken Roach
Why isn't Ethernet an option ? Or do you just...

Why isn't Ethernet an option ? Or do you just mean hardwired Ethernet isn't an option ?

What exactly do you want to do with the data in the PV+ terminals ? Do you want to see the screens,...
Forum: LIVE PLC Questions And Answers February 21st, 2020, 03:43 PM
Replies: 3
Views: 164
Posted By Ken Roach
The robustness of DH+ and RIO makes bad and...

The robustness of DH+ and RIO makes bad and damaged wiring and topology work well most of the time, leading to a lot of complacency.

I once troubleshot a big DH+ network in a "pickling line"; ...
Forum: LIVE PLC Questions And Answers February 21st, 2020, 01:50 PM
Replies: 3
Views: 164
Posted By Ken Roach
Thanks for the detailed description ! If you...

Thanks for the detailed description !

If you disconnect the controller at the "end" of the network, can you recover DH+ token passing (a solid green LED on the DH+ port of the PLC-5) among the...
Forum: LIVE PLC Questions And Answers February 20th, 2020, 06:10 PM
Replies: 8
Views: 305
Posted By Ken Roach
Welcome to the PLCTalk forum community ! ...

Welcome to the PLCTalk forum community !

That sounds like both proper operation for a Safety-related circuit and normal operation for an A-B drive.

A safety circuit typically cannot allow...
Forum: LIVE PLC Questions And Answers February 18th, 2020, 12:14 PM
Replies: 4
Views: 270
Posted By Ken Roach
One basic thing to understand is that a MAM...

One basic thing to understand is that a MAM instruction starts to control an axis move when its rung goes false -> true. You don't need to keep the rung True in order to keep the motion move...
Forum: LIVE PLC Questions And Answers February 17th, 2020, 06:01 PM
Replies: 4
Views: 236
Posted By Ken Roach
Welcome to the PLCTalk forum community ! ...

Welcome to the PLCTalk forum community !

I can see how someone might take a first look at the I:StatusRegister.Fault bit and incorrectly conclude that it indicates a general or summary network...
Forum: LIVE PLC Questions And Answers February 17th, 2020, 02:51 PM
Replies: 4
Views: 236
Posted By Ken Roach
The Local:3:I.StatusRegister.Fault bit indicates...

The Local:3:I.StatusRegister.Fault bit indicates that the DeviceNet network has been intentionally faulted by the user program (or an online user) setting the matching Output bit,...
Forum: LIVE PLC Questions And Answers February 15th, 2020, 07:06 PM
Replies: 3
Views: 221
Posted By Ken Roach
Because RSLinx and the ENxT modules didn't...

Because RSLinx and the ENxT modules didn't implement a "remote ethernet browse", you have to manually tell RSLinx which IP addresses beyond the second ENxT you want to browse.

Knowledgebase...
Forum: LIVE PLC Questions And Answers February 14th, 2020, 03:36 PM
Replies: 9
Views: 596
Posted By Ken Roach
Which network protocol does your system use ? ...

Which network protocol does your system use ?

The classic R-series supports

PowerLink
EtherNet/IP
ProfiNet
EtherCAT
SSI
CANBus
Forum: LIVE PLC Questions And Answers February 14th, 2020, 01:25 PM
Replies: 3
Views: 204
Posted By Ken Roach
Various models of the PanelView 550 can use...

Various models of the PanelView 550 can use either DF1 Full Duplex or DH485 protocol, and the MicroLogix 1200 can be configured for either one.

Your problem is almost certainly related to the...
Forum: LIVE PLC Questions And Answers February 13th, 2020, 08:41 PM
Replies: 2
Views: 170
Posted By Ken Roach
Welcome (officially) to the PLCTalk.net forum...

Welcome (officially) to the PLCTalk.net forum community !

To confirm: your DHRIO module is physically in Slot 3, and your configuration is for Slot 3 as well.

Which channel is your RIO...
Forum: LIVE PLC Questions And Answers February 13th, 2020, 02:39 PM
Replies: 1
Views: 139
Posted By Ken Roach
Yup, that's the correct software. The "ME"...

Yup, that's the correct software. The "ME" version of Studio will only create and edit FactoryTalk View ME projects, generally for PV+ terminals.

2711P-RDT-10-C indicates a "PanelView Plus 6"...
Forum: LIVE PLC Questions And Answers February 13th, 2020, 02:08 PM
Replies: 3
Views: 180
Posted By Ken Roach
Exposition on the meaning of the "Port, Address"...

Exposition on the meaning of the "Port, Address" pairs in the CIP Path "1, 3, 3, 10, 1, 0"

On any ControlLogix 1756 module:

Port 1 = 1756 Backplane
Port 2 = Network Port (on DHRIO, Port A)...
Forum: LIVE PLC Questions And Answers February 12th, 2020, 02:49 PM
Replies: 3
Views: 188
Posted By Ken Roach
What are you visualizing the progress of ? ...

What are you visualizing the progress of ?

In general, the horizontal Fill animation for a Rectangle object is how you would create a "Progress Bar" in FactoryTalk View.
Forum: LIVE PLC Questions And Answers February 12th, 2020, 02:04 PM
Replies: 3
Views: 134
Posted By Ken Roach
In general, an absolute encoder shouldn't be able...

In general, an absolute encoder shouldn't be able to exhibit "drift" behavior.

Incremental encoders can; "jitter" on the edge of a code disk slot, or interference in the signal to an encoder...
Forum: LIVE PLC Questions And Answers February 12th, 2020, 10:29 AM
Replies: 22
Views: 993
Posted By Ken Roach
ABB's high-end PSTX soft starters have a "reverse...

ABB's high-end PSTX soft starters have a "reverse jog" feature; it's advertised as a way to do clog removal on pumps. Allen-Bradley SMC Flex offers 10% and 20% reverse "Slow Speed" as well.

But...
Forum: LIVE PLC Questions And Answers February 11th, 2020, 08:02 PM
Replies: 4
Views: 149
Posted By Ken Roach
Which exact models of controllers are you using ?...

Which exact models of controllers are you using ? What sort of network connections do you have ?

What's your goal for messaging between controllers ?
Forum: LIVE PLC Questions And Answers February 11th, 2020, 05:22 PM
Replies: 4
Views: 149
Posted By Ken Roach
MG datatypes are only for the MicroLogix...

MG datatypes are only for the MicroLogix controllers.

In any SLC-500, use a block of Integer (N) data of the appropriate size. DF1 or DH485 or DH+ messages use 14 words, and Ethernet messages...
Forum: LIVE PLC Questions And Answers February 10th, 2020, 03:55 PM
Replies: 13
Views: 650
Posted By Ken Roach
Jeff Kiper, where are you ? We need a...

Jeff Kiper, where are you ? We need a functional safety expert !

The usual function of an External Device Monitoring circuit is for a safety-rated relay or contactor that has force-guided...
Forum: LIVE PLC Questions And Answers February 10th, 2020, 01:14 PM
Replies: 13
Views: 650
Posted By Ken Roach
What safety standard or degree of safety...

What safety standard or degree of safety performance are you designing to ?

It sounds like you are using the fault relays as a "External Device Monitoring" circuit.

How does your safety...
Forum: LIVE PLC Questions And Answers February 6th, 2020, 05:07 PM
Replies: 48
Views: 2,680
Posted By Ken Roach
[quiet voice] If you're an OEM with a...

[quiet voice]

If you're an OEM with a Toolkit and a pricing discount agreement with your Rockwell Automation distributor, and you experience a substantial price increase, then there's a commercial...
Forum: LIVE PLC Questions And Answers February 6th, 2020, 04:47 PM
Replies: 2
Views: 389
Posted By Ken Roach
The last guy who answered is just spamming the...

The last guy who answered is just spamming the board; he has no "friend" with relevant experience. I'll remove his post in a minute.

In general, use Modbus RTU over RS-485 for this purpose. ...
Forum: LIVE PLC Questions And Answers February 5th, 2020, 12:51 PM
Replies: 6
Views: 190
Posted By Ken Roach
There was another thread a couple of weeks ago...

There was another thread a couple of weeks ago with similar symptoms; 1756-L6x, SERCOS module, all other modules faulted. I checked Cydog's post history and it doesn't appear to be him, so I...
Forum: LIVE PLC Questions And Answers February 5th, 2020, 02:20 AM
Replies: 5
Views: 290
Posted By Ken Roach
Thanks, Peter ! There will be an RMC on...

Thanks, Peter !

There will be an RMC on another part of this system controlling eight hefty hydraulic cylinders. I think I'll need the RMC200 because I want to control both force and...
Showing results 1 to 25 of 500

 
Forum Jump

All times are GMT -5. The time now is 08:02 AM.


.