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Search: Posts Made By: Ken Roach
Forum: LIVE PLC Questions And Answers January 18th, 2020, 11:47 PM
Replies: 4
Views: 301
Posted By Ken Roach
To my knowledge the 1747-SN and RSLinx could...

To my knowledge the 1747-SN and RSLinx could provide "passthrough" upload/download functionality to PanelView Standards, but not to any SCANPort or DPI based drives.

For a PowerFlex 700VC, I agree...
Forum: LIVE PLC Questions And Answers January 18th, 2020, 08:09 PM
Replies: 6
Views: 266
Posted By Ken Roach
This sounds very much like a dynamic brake...

This sounds very much like a dynamic brake application or configuration problem.

First, the PowerFlex 525 might not be the right drive for a vertical load application, but I don't know your...
Forum: LIVE PLC Questions And Answers January 17th, 2020, 07:56 PM
Replies: 8
Views: 331
Posted By Ken Roach
The DSI node number and the DeviceNet node number...

The DSI node number and the DeviceNet node number are not the same.

In general, a PowerFlex 40 will be DSI Node 1 unless you have intentionally changed it to use multi-drive mode.

If each one...
Forum: LIVE PLC Questions And Answers January 17th, 2020, 03:05 PM
Replies: 4
Views: 276
Posted By Ken Roach
It's clever that the ProFace devices have an...

It's clever that the ProFace devices have an output heartbeat or automatic output refresh. I'd like to know if they use the PCCC Object or some of the other EtherNet/IP objects.

I suppose it...
Forum: LIVE PLC Questions And Answers January 17th, 2020, 12:32 PM
Replies: 6
Views: 356
Posted By Ken Roach
There I go again, being "reasonably certain"...

There I go again, being "reasonably certain" about something that hasn't been true for months or years, but that George knows all about !

That's interesting the Kepware doesn't support the COM2...
Forum: LIVE PLC Questions And Answers January 17th, 2020, 12:28 PM
Replies: 4
Views: 276
Posted By Ken Roach
Welcome to the PLCTalk forum community ! I...

Welcome to the PLCTalk forum community !

I don't have direct experience with this specific approach and the PowerFlex 525, though my experience with A-B drive communications for older models is...
Forum: LIVE PLC Questions And Answers January 17th, 2020, 01:04 AM
Replies: 6
Views: 356
Posted By Ken Roach
What's the KepServer protocol ? If there's a...

What's the KepServer protocol ?

If there's a way to run it "encapsulated" to an IP/Serial terminal server, then that might work in place of the straight serial connection.

I think the LanTronix...
Forum: LIVE PLC Questions And Answers January 15th, 2020, 05:11 PM
Replies: 7
Views: 268
Posted By Ken Roach
Aw, now, that's not fair, putting them on the...

Aw, now, that's not fair, putting them on the selection list but not making it available for download.

Patience requires practice, I guess.
Forum: LIVE PLC Questions And Answers January 15th, 2020, 03:27 PM
Replies: 7
Views: 268
Posted By Ken Roach
RA Knowledgebase Article 1066410 is the...

RA Knowledgebase Article 1066410 is the 5069-SERIAL FAQ was updated yestersday, detailing that the full suite of DF1 protocols (Full, Half Master, Half Slave, Radiomodem) and DH485 will be supported....
Forum: LIVE PLC Questions And Answers January 14th, 2020, 05:56 PM
Replies: 4
Views: 170
Posted By Ken Roach
There is no workaround or exception; the limit is...

There is no workaround or exception; the limit is real.

I realize there are data consistency issues you might have to work around, and encourage you to examine the details of hope the CPS...
Forum: LIVE PLC Questions And Answers January 14th, 2020, 05:30 PM
Replies: 4
Views: 170
Posted By Ken Roach
Welcome to the PLCTalk forum community ! The...

Welcome to the PLCTalk forum community !

The only way to do this will be to insist that the other programmer create smaller DINT[x] arrays to hold this data.

I just checked to be sure (in...
Forum: LIVE PLC Questions And Answers January 14th, 2020, 04:35 PM
Replies: 11
Views: 536
Posted By Ken Roach
Thank you for that clarification. The...

Thank you for that clarification.

The "F71" fault code on a PowerFlex 40 drive indicates a signal or media problem on the DeviceNet.

I can only refer you to the DeviceNet Media Planning and...
Forum: LIVE PLC Questions And Answers January 14th, 2020, 01:21 PM
Replies: 11
Views: 536
Posted By Ken Roach
Please confirm which drives you are seeing this...

Please confirm which drives you are seeing this fault code on: PowerFlex 70, PowerFlex 700, or PowerFlex 40 ? Your posts have not been clear about that.

As my colleague jraef has pointed out, a...
Forum: LIVE PLC Questions And Answers January 14th, 2020, 12:24 AM
Replies: 1
Views: 149
Posted By Ken Roach
In this context, "DPRAM" is probably "Dual Port...

In this context, "DPRAM" is probably "Dual Port RAM", a straightforward way for PC programs to very quickly exchange blocks of data with a controller running on an expansion card.

Presumably, this...
Forum: LIVE PLC Questions And Answers January 13th, 2020, 08:28 PM
Replies: 3
Views: 262
Posted By Ken Roach
Another alternative: a Red Lion Edge Controller....

Another alternative: a Red Lion Edge Controller. It doesn't have NAT built in, but it does have some port-to-port IP routing capability.

It can happily talk to a "socket" device with its own...
Forum: LIVE PLC Questions And Answers January 13th, 2020, 06:31 PM
Replies: 11
Views: 536
Posted By Ken Roach
Thank you for posting those results ! ...

Thank you for posting those results !

Double-check the resistor that is in place now; it should be 120 ohms.

The DeviceNet Media Planning Guide has good illustrations and calculations for how...
Forum: LIVE PLC Questions And Answers January 13th, 2020, 12:30 AM
Replies: 10
Views: 431
Posted By Ken Roach
I don't think grace period existed until well...

I don't think grace period existed until well into FactoryTalk activation; v16 is my recollection.

I haven't had to handle one of these for more than ten years when I was still with RA; we used...
Forum: LIVE PLC Questions And Answers January 10th, 2020, 05:13 PM
Replies: 11
Views: 536
Posted By Ken Roach
DeviceNet networks require two termination...

DeviceNet networks require two termination resistors of 120 ohms each, connected between the CAN_H and CAN_L wires (Blue and White for DeviceNet) at the physical extreme ends of the network trunk.
...
Forum: LIVE PLC Questions And Answers January 10th, 2020, 04:24 PM
Replies: 3
Views: 262
Posted By Ken Roach
That's a great question ! A faster and...

That's a great question !

A faster and cheaper approach: add a NAT router between the enterprise network and the controller, then re-address the existing 1788-ENBT to a local LAN address. Put...
Forum: LIVE PLC Questions And Answers January 10th, 2020, 04:03 PM
Replies: 11
Views: 536
Posted By Ken Roach
Does a network error code also appear on the...

Does a network error code also appear on the DeviceNet scanner or in its Status tags, as well as on the drives ?

Does the fault reset by itself, or must you perform a power cycle to clear it ?
...
Forum: LIVE PLC Questions And Answers January 10th, 2020, 12:44 PM
Replies: 11
Views: 513
Posted By Ken Roach
I will try to keep this simple, at the risk of...

I will try to keep this simple, at the risk of not being comprehensive.

First, clarify if you're using the ordinary error-based PID (in relay ladder logic) or the rate-of-change based Enhanced PID...
Forum: LIVE PLC Questions And Answers January 9th, 2020, 05:28 PM
Replies: 5
Views: 320
Posted By Ken Roach
I have never heard of a PowerFlex drive failing...

I have never heard of a PowerFlex drive failing to obey a STOP command.

STOP commands always override all other drive commands, and have done so for every A-B drive I have worked with for almost...
Forum: LIVE PLC Questions And Answers January 9th, 2020, 03:15 PM
Replies: 11
Views: 513
Posted By Ken Roach
Welcome to the participation side of the PLCTalk...

Welcome to the participation side of the PLCTalk community !

I've got a handful of comments:

1. If your controller served for years and only recently started failing, firmware or manufacturing...
Forum: LIVE PLC Questions And Answers January 8th, 2020, 05:49 PM
Replies: 10
Views: 642
Posted By Ken Roach
Immediately prior to finalizing the wiring...

Immediately prior to finalizing the wiring diagrams and terminal labels for the Micro 800 series controllers, the technical illustrators and product managers performed a usability study involving the...
Forum: LIVE PLC Questions And Answers January 8th, 2020, 02:07 PM
Replies: 19
Views: 572
Posted By Ken Roach
What you're looking at is probably a relic of an...

What you're looking at is probably a relic of an RA Commercial Engineering project, maybe fifteen years ago.

At the very beginning of the ControlLogix Redundancy system, there were some...
Showing results 1 to 25 of 500

 
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