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Showing results 1 to 25 of 500
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Search: Posts Made By: Ken Roach
Forum: LIVE PLC Questions And Answers Today, 01:13 AM
Replies: 7
Views: 174
Posted By Ken Roach
Thanks for the additional detail ! The Murr...

Thanks for the additional detail !

The Murr subsystem must consist of one Ethernet-connected base block (the CUBE20 DI8) with more than one expansion modules connected to it, rather than multiple...
Forum: LIVE PLC Questions And Answers Yesterday, 07:46 PM
Replies: 7
Views: 174
Posted By Ken Roach
Welcome to the PLCTalk forum community ! ...

Welcome to the PLCTalk forum community !

For a first post, that's a fantastic amount of detail and candor. Thanks !

Your system sounds like it was designed with the minimum amount of...
Forum: LIVE PLC Questions And Answers May 23rd, 2020, 05:00 PM
Replies: 3
Views: 259
Posted By Ken Roach
On your development PC, examine the text objects...

On your development PC, examine the text objects to see what font they use.

PV+ terminals by default have only the "Arial" font installed. On FTView ME version 11 and later, it's "Arial Unicode...
Forum: LIVE PLC Questions And Answers May 22nd, 2020, 01:30 AM
Replies: 4
Views: 444
Posted By Ken Roach
The "3.2" must have been the firmware when the...

The "3.2" must have been the firmware when the device was manufactured, circa 2004.

It's probably running 5.0.x firmware, so the newest possible firmware is 5.10.16 (I just checked the PCDC...
Forum: LIVE PLC Questions And Answers May 21st, 2020, 03:21 PM
Replies: 3
Views: 314
Posted By Ken Roach
The PowerFlex 755 can be run as a "position...

The PowerFlex 755 can be run as a "position controller" but you need to carefully select and tune the motor and encoder. Those drives support induction, permanent-magnet, and synchronous reluctance...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 08:00 PM
Replies: 15
Views: 314
Posted By Ken Roach
The MicroLogix 1400 has the ability to change the...

The MicroLogix 1400 has the ability to change the IP address via the LCD and keypads, but I don't think the MicroLogix 1100 does.

It's not using BOOTP/DHCP because it's been set to a static IP...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 03:50 PM
Replies: 12
Views: 318
Posted By Ken Roach
Awesome info; I didn't know about that with v32...

Awesome info; I didn't know about that with v32 !

I've had corrupted I/O entries before, years ago with the DHRIO because of something that screws up when you make a change after accepting the...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 03:29 PM
Replies: 12
Views: 318
Posted By Ken Roach
Rotary switches can be finicky; When I "verify"...

Rotary switches can be finicky; When I "verify" them I always move them a couple of clicks then back to their desired position.

That's the usual reason for that error code; the controller is...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 12:27 PM
Replies: 4
Views: 170
Posted By Ken Roach
The overhead involved in transporting a frame...

The overhead involved in transporting a frame over Ethernet or over serial is much larger than the data payload itself. Since data is organized into bytes, the biggest packet difference between a...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 11:59 AM
Replies: 4
Views: 170
Posted By Ken Roach
Welcome to the PLCTalk forum community ! You...

Welcome to the PLCTalk forum community !

You should "pack" your boolean values into a 16-bit Word (B or N data table type) and send the whole word over the network.

A-B does not support...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 11:52 AM
Replies: 12
Views: 318
Posted By Ken Roach
Welcome to the PLCTalk forum community ! ...

Welcome to the PLCTalk forum community !

Double-check the rotary switches on the DHRIO to be sure they are set for RIO instead of DH+.

That error code is misleading but I know it will appear...
Forum: LIVE PLC Questions And Answers May 19th, 2020, 02:45 AM
Replies: 8
Views: 485
Posted By Ken Roach
Thank you for the follow-up ! I cannot find...

Thank you for the follow-up !

I cannot find that specific part number on the TR Electronic website. Can you give us some more information so we can find the exact datasheet and examine the wiring...
Forum: LIVE PLC Questions And Answers May 17th, 2020, 08:24 PM
Replies: 10
Views: 398
Posted By Ken Roach
Does the terminal have a nonvolatile memory card...

Does the terminal have a nonvolatile memory card installed ? If it gave you that fault without a card installed, then there's something failing in the card host electronics.

If there's a card...
Forum: LIVE PLC Questions And Answers May 16th, 2020, 02:15 PM
Replies: 13
Views: 847
Posted By Ken Roach
JRW: that's the DB15 / terminal connector SEW...

JRW: that's the DB15 / terminal connector SEW uses, and we had on all of our 1/4 HP motors. But it fit directly on the encoder, underneath the fan shroud.

So maybe that green cable is just a...
Forum: LIVE PLC Questions And Answers May 16th, 2020, 02:08 PM
Replies: 64
Views: 2,748
Posted By Ken Roach
The problem with doing lifetime hour counters in...

The problem with doing lifetime hour counters in a PLC is that unless you take extra measures to store the accumulated value in non-volatile memory they will very probably be altered by a download.
...
Forum: LIVE PLC Questions And Answers May 15th, 2020, 04:30 PM
Replies: 13
Views: 847
Posted By Ken Roach
Interesting ! Get that shroud off of there and...

Interesting ! Get that shroud off of there and see what's on the tailshaft.

I did a project with a dozen 1/4 HP SEW gearmotors like that last year and one of them gave me fits for months until...
Forum: LIVE PLC Questions And Answers May 15th, 2020, 03:30 PM
Replies: 50
Views: 1,491
Posted By Ken Roach
Right on ! A slower baud rate on the scale side...

Right on ! A slower baud rate on the scale side is consistent with what you're seeing with "bad" bytes, and what others pointed out about the adjacent true bits.

Change your MicroLogix Channel 2...
Forum: LIVE PLC Questions And Answers May 15th, 2020, 12:04 PM
Replies: 50
Views: 1,491
Posted By Ken Roach
Your program looks like it is designed for a...

Your program looks like it is designed for a scale that periodically sends 11 characters of data, in the format "+ 12.34 g", without any termination characters.

If the connection were...
Forum: LIVE PLC Questions And Answers May 15th, 2020, 03:10 AM
Replies: 14
Views: 856
Posted By Ken Roach
Thank you very much for explaining your purpose. ...

Thank you very much for explaining your purpose.

ControlLogix is a little unusual among industrial controllers because it uses precision time synchronization for motion control and safety...
Forum: LIVE PLC Questions And Answers May 14th, 2020, 02:46 PM
Replies: 50
Views: 1,491
Posted By Ken Roach
This issue smells like a serial framing problem,...

This issue smells like a serial framing problem, with the wrong parity or number of data bits.

But the exact framing issue doesn't jump out at me, nor are there obvious differences in the...
Forum: LIVE PLC Questions And Answers May 14th, 2020, 01:18 PM
Replies: 50
Views: 1,491
Posted By Ken Roach
I sat on my post too long and overlooked the...

I sat on my post too long and overlooked the original program post. Thanks !

That program shows a sample of the expected string: "+ 23.72 g"

So we should be looking for four non-numeric...
Forum: LIVE PLC Questions And Answers May 14th, 2020, 12:56 PM
Replies: 50
Views: 1,491
Posted By Ken Roach
Thanks for posting the program ! The change...

Thanks for posting the program !

The change from Port 1 on the MicroLogix 1500 to Port 2 on the MicroLogix 1400 should be no problem; they are physically and functionally identical RS-232 ports....
Forum: LIVE PLC Questions And Answers May 13th, 2020, 01:36 PM
Replies: 50
Views: 1,491
Posted By Ken Roach
Welcome to the PLCTalk forum community ! The...

Welcome to the PLCTalk forum community !

The more information you can provide, the better folks can help you understand the scale connection and the associated logic.

There are two "ASCII Read"...
Forum: LIVE PLC Questions And Answers May 12th, 2020, 05:29 PM
Replies: 15
Views: 770
Posted By Ken Roach
Try changing the Switch 1 settings to an unused...

Try changing the Switch 1 settings to an unused DH+ station number, to see if the PLC-5/40 shows up at that node number.

Double, triple, quadruple-check your PLC-5 program to make sure that...
Forum: LIVE PLC Questions And Answers May 12th, 2020, 01:52 PM
Replies: 15
Views: 770
Posted By Ken Roach
Thanks for providing those details. I'm going...

Thanks for providing those details. I'm going to ask you to back up and do some clarifying.

Exactly which model of PLC-5/40 is this ? There were the uncommon PLC-5/40VME and 5/40L, the very...
Showing results 1 to 25 of 500

 
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