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Allen Bradley Devicenet Scanner Error Codes

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Usually Error 72 occurs first, indicating that an I/O connection has failed, followed several seconds later by Error # 78 when the scanner cannot re-establish communications. California Posted 17 Aug 2006 I don't recall seeing the node number flashing in sequence behind the error code. The 1756-DNB handles all of the connection establishment and recovery on the network and all it does with the controller is bridge messaging and exchange the I/O and status data files. On the 1756-DNB they are accompanied by "N#" for node number and "E#" for error number. http://lanprolab.net/allen-bradley/allen-bradley-devicenet-error-codes.php

Please try the request again. California Posted 17 Aug 2006 It jsut dawned on me why the panel view is fine there are two 1756-DNB,s in the rack and they are handling different parts of the Generated Fri, 30 Sep 2016 04:41:58 GMT by s_hv999 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.4/ Connection Mr.PLC Contact Us Articles Downloads Store ABB Allen-Bradley Automation Direct Emerson GE Fanuc Honeywell Horner Electric Keyence Mitsubishi Modicon Omron Reliance Electric Siemens Square D Westinghouse Forums General Topics Allen-Bradley GE http://www.plctalk.net/qanda/showthread.php?t=45205

1746-sdn

When you get the E78 on the display the corresponding tag from above will have a value of 78. You're going to have to get a good look at the 1756-DNB display when this happens. What do the indicators on the device say? We need to determine which nodes are doing this.

Try ouronline PLC Simulator- FREE. I think THIS manual will help you. California Posted 17 Aug 2006 (edited) The reason we have to cycle the processor is because the system monitors the devicenet status tags and when the error is detedted it shuts Allen Bradley Devicenet Adapter Sign in here.

Any changes been made recently? I swapped the most signifigant and the least signifigant digit. Are the codes the same for Control logix devicenet modules? If this is an Allen-Bradley scanner error 78 refers to a node in the scanlist dropping off the network.

Generated Fri, 30 Sep 2016 04:41:58 GMT by s_hv999 (squid/3.5.20) Allen Bradley Devicenet Connectors The processor is actually being faulted and that is why we need to cycle run mode. The good network has 4 drives and a panel view. Your cache administrator is webmaster.

Allen Bradley Devicenet Error Code 91

The system returned: (22) Invalid argument The remote host or network may be down. Please click here to register! 1746-sdn I will throw a recorder on that today to see if it is a possibility. Allen Bradley Devicenet Cable I did some research in the Knowledgebase and the only thing I found was that the code indicates "Slave device in scan list table does not exist" but this is in

What is the device? navigate here The problem is that you can't get anywhere near the Flex I/O adapters until the equipment is stopped and by that time everything is cool except the processor and the DNB Generated Fri, 30 Sep 2016 04:41:58 GMT by s_hv999 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.5/ Connection Generated Fri, 30 Sep 2016 04:41:58 GMT by s_hv999 (squid/3.5.20) ERROR The requested URL could not be retrieved The following error was encountered while trying to retrieve the URL: http://0.0.0.8/ Connection Allen Bradley Devicenet Eds Files

The other thing that is strange is that it only occurs after 2:30 in the afternoon so I was thinking it might be related to the incoming Edison service dropping voltage Share this post Link to post Share on other sites TWControls 41 Industrial Sorcerer MrPLC Admin 41 4428 posts Gender: Male Roanoke, Virginia United States Posted 16 Aug 2006 All As far as it being a single node or system wide the panel view is communicating via devicenet and it seems to be fine. Check This Out The system returned: (22) Invalid argument The remote host or network may be down.

One big problem with devicenet is that if the signal is not clean, clean clean and/or if the power is not tightly regulated and/or if shield grounding is not absolutely perfect, Allen Bradley Devicenet Power Supply Perhaps somebody has locked-out a DN remote rack somewhere, or locked-out a Drive. On a different note what would be an alternative to running the network over slip rings for rotating equipment?

The fun part is finding the offending node, especially if your plant electrical schematics do not indicate node numbers.

Contact Us - PLCS.net - Text - Top . Register a new account Sign in Already have an account? Share this post Link to post Share on other sites Ken Roach 85 Propeller Head MrPLC Member 85 2487 posts Posted 17 Aug 2006 Cycling the run mode of the Allen Bradley Devicenet Bus Off Detected Could the problem be the DeviceNet scanner module or a corrupt Scan list???

Your cache administrator is webmaster. Share this post Link to post Share on other sites TWControls 41 Industrial Sorcerer MrPLC Admin 41 4428 posts Gender: Male Roanoke, Virginia United States Posted 18 Aug 2006 Have Ken, it must be E78 and not F78 the scanner is above my head by about 2 ft and I probably didnt see the bottom segment in the "E". http://lanprolab.net/allen-bradley/allen-bradley-devicenet-error-code-91.php Is this a new or existing machine?

Typically it will flash the error code "78" followed by the node number "0-63" that has dropped of the network. I vaguely remember that Slave may go into a "bus off" condition which, though green, will be indicated by the comm LED flashing green (though I'm less sure about this one Share this post Link to post Share on other sites TWControls 41 Industrial Sorcerer MrPLC Admin 41 4428 posts Gender: Male Roanoke, Virginia United States Posted 16 Aug 2006 Another Please try the request again.

You also describe a display behavior that is not normal, that is, a static error display with no alternating error number. The system returned: (22) Invalid argument The remote host or network may be down. The system returned: (22) Invalid argument The remote host or network may be down. The time now is 11:44 PM.

This error code says the scanner lost the scan list...is this a common problem? I am leaving on vacation for a week and wont have time to post further until I return and I will dig in and go online to monitor tags and have Red LED's or unlit LED's on the Slave means a sick Slave. Please try the request again.

Probably, you have a Motor Control Center containing Variable Frequency Drives, each of which is connected as a DeviceNet Node. It's been running now for about 3 years. The system returned: (22) Invalid argument The remote host or network may be down. If it is too erratic then add code to monitor this tag Local:X:S.DeviceStatus[Y] X = Slot number Y = Node Address.

Please try the request again. There is never an "F". Sign In Sign In Remember me Not recommended on shared computers Sign in anonymously Sign In Forgot your password? Your cache administrator is webmaster.