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Messages - EDGAR

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1
Technical support / Re:Undef.Interrupt.. with the NANO
« on: June 17, 2016, 07:57:12 AM »
Great! Thanks, I will reach out to your support team.

Ed

2
Technical support / Re:Undef.Interrupt.. with the NANO
« on: June 16, 2016, 11:43:45 AM »
Thanks all, the firmware is r73. I will monitor the operations for the next few days and let everyone know how it goes.  If for some reason I get the same error on a different functions how would I be able to address the issue using INTRDEF 100,n,1 for multiple functions?

Thanks,
Ed

3
Technical support / Re:Undef.Interrupt.. with the NANO
« on: June 14, 2016, 05:57:50 PM »
Guys, thanks for the info! Unfortunate, I can't seem to understand why it is happening. The program the PLC is  running is really simple. It's a Modbus master that loops through several VFD's using a sequencer to increment. I have attached the file for your review. The sequencer was initially incremented every second, now I have increased the timing to increment every 3 seconds to see if that fixes this bug.

Anything more info after your review will be greatly appreciated.

Thanks,
Ed

4
Technical support / Undef.Interrupt.. with the NANO
« on: June 13, 2016, 10:37:43 AM »
Hey,

I got this error with the nano after a week of working fine. This NANO is programmed to read VFD status from the network via RS485. Everything was working fine until this morning.

Error:
Undef.Interrupt..
CF #0004:01AE

See attached picture...
Ed

5
Technical support / Re:ABB ACH550 RS485 trunk issue
« on: May 31, 2016, 04:32:11 PM »
Hi, just to update everyone. After testing the impendence on the drive it was well above 164Ohms (34K) the transceiver was deemed blown by ABB. Next step is to change the entire board, or just use the built-in AO to read the desired analog signal. However, just because it works with the laptop, I'm researching on using an RS485 extender ie. RS485 to RS485 just to interface with the VFD to see if it works.  

Any ideas will be greatly appreciated...
Ed

6
Technical support / Re:ABB ACH550 RS485 trunk issue
« on: May 20, 2016, 06:53:20 PM »
I forgot to mention that I get the error even when I swap the wires, when connecting just +ve wire, when connecting just the -ve wire. Even when there's no communication being broadcast I still get the error and the drop is not responsive.

I will follow the ABB suggestions and let everyone know the outcome.

Ed

7
Technical support / Re:ABB ACH550 RS485 trunk issue
« on: May 20, 2016, 03:18:18 PM »
The wiring is correct there's not much to it, is working on the other drives on the daisy chain. ABB suggest to check the impendence across the + and - terminal. Measurement needs to be 164ohms with +/- 5%. They also asked me to remove the shielded from the ground, and turn on the bus terminator on the drive.

I will be at the plant on Monday working on this, I will keep everyone posted.

Thanks Gary!!
Ed

8
Technical support / Re:ABB ACH550 RS485 trunk issue
« on: May 20, 2016, 12:38:23 PM »
Thank You!
I'm leaning more to bullet #4, but the drive worked when connected to the laptop with the U-485. Comm settings are all the same for all drives.

ABB just sent me some troubleshooting documents but nothing that I haven't tried. I was thinking on using the Auto485 but I can't because the com port on the drive is used by the keypad.

Thanks!!
Ed

9
Technical support / Re:ABB ACH550 RS485 trunk issue
« on: May 20, 2016, 05:26:21 AM »
Thank You Both for the input! The network is already setup as you guys mentioned, the shielded wire on each drive is connected to the AGND terminal and at the Nano is connected to the 0V. All but Drive2 is not communicating at all, with UART Errors.

My next step is to enable to built in bias terminator in the last drive (Drive4) to see if that works, if it doesn't work I will disable it and then add the 1K by the Nano and try again as you mentioned.

[---------------RS 485 Network--25' max-------------]
 ====\/=======\/======\/======\/
      [Drive1]     [Drive2]     [Drive3]     [Drive4]

I have also reached out to ABB to see if there's anything else I can do, so far still waiting....

My very last attempt to fix this id everything else doesn't work, I will try to use the Auto485 and connect it to the drive via RS232 back on the network with via 485 , I haven't try this yet... Keep you all posted.


Thanks,
Ed




10
Technical support / Re:ABB ACH550 RS485 trunk issue
« on: May 19, 2016, 01:38:52 PM »
Thanks for your reply!

Do you want me to add the 1k resistor at the drive terminal or at the nano terminal?

Thanks,
Ed

11
Technical support / ABB ACH550 RS485 trunk issue
« on: May 19, 2016, 02:21:52 AM »
Hello everyone! I have a little issue with a single drive in a 485 network. Basically I have a nano working as a modbus master polling information from each drive. My issue is that one of the drive gives me a UART error even with the nano communication turn off. Yesterday I remove that drive from the network and locally it work using an u-485 converter. But as soon as I connect one of the network wires it starts counting on UART error.

My question is, have anyone dealt with an anomaly like this? Also, what's on the U485 that's not in the nano 485.

One note, the drive in question is the 3rd node on the network at of 4 drives and the last node works fine.

Thanks, any help will be greatly appreciated...
Ed

12
Technical support / Re:ReadMB2
« on: December 04, 2014, 06:05:59 AM »
Thank you! It works great using the sample project that comes with your programming software. I will make changes to the current program to see if it works.

Thanks, again and keep you posted.
Ed

13
Technical support / Re:ReadMB2
« on: December 03, 2014, 07:17:24 PM »
Ok, I have not found the issue but the problem is in the PLC program that's currently running. I tested with the Ethernet Modbus sample and everything works great!

So keep everyone posted when I find the solution...

Thanks,
Ed

PS: the image was never uploaded on the previous post, it was too large...

14
Technical support / Re:ReadMB2
« on: December 03, 2014, 03:27:27 PM »
This is what I found using a third party testing software... Image attached...

15
Technical support / Re:ReadMB2
« on: December 03, 2014, 11:52:14 AM »
I just changed the address from 40004 to 30004 thinking that may be causing register overflow but nothing yet. Still having the issue...

Thanks,
Ed

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