Dnet Error
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1756-dnb Error Codes
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Devicenet Error 77
and Supporting Devices Allen Bradley devicenet error 77 Sign in to follow this Followers 0 devicenet error 77 Started by sparkotronic, 18 Sep 2009 3 posts in this topic sparkotronic 0 Sparky MrPLC Member 0 100 posts allen bradley devicenet manual Gender: Male Scotland Scotland Interests: Music, Music, Music and the occasional book. Often at the same time. Posted 18 Sep 2009 Hi, I'm looking for a bit of help regarding a devicenet problem on one of the machines at my workplace. Basically one of the inverter drives has stopped opperating. On the SLC 5 plc rack there is a 1747-SDN devicenet scanner module, this is showing an error 77 at node 2 Node 2 is an Allenbradley devicenet bus off detected 160-DN2 devicenet communication module connected to a AB160C drive. I've tried swapping the card to another identical drive and the fault transfers with it. I have no experience of devicenet, so any help would be most apreciated. Best regards, Colin Share this post Link to post Share on other sites sparkotronic 0 Sparky MrPLC Member 0 100 posts Gender: Male Scotland Scotland Interests: Music, Music, Music and the occasional book. Often at the same time. Posted 18 Sep 2009 Just as an extra! I Addressed the brand new card to Node 4 and the Error moved to Node 4. I addressed Node 4's card to Node 2 and the fault on Node 2 cleared. What are the chances of me recieving 2 broken 160-DN2 cards. I am truly stummped! Share this post Link to post Share on other sites don 0 Sparky MrPLC Member 0 40 posts Colorado United States Interests: old cars Posted 18 Sep 2009 From the manual, error 77 is: DATA SIZE EXPECTED BY THE DEVICE DOES NOT MATCH THE SCAN LIST ENTRY. RECONFIGURE MODULE FOR CORRECT TRANSMIT AND RECEIVE DATA SIZES. I haven't used the 160-DN2, but have seen this same error on Armorstart drives when the I/O wasn't mapped, or was mapped differently than what the scanner was expecting. Share this post Link to post Share on other sites Create an accou
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Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Scapy installation fails on osx with dnet import error http://forums.mrplc.com/index.php?/topic/18262-devicenet-error-77/ up vote 18 down vote favorite 5 Having trouble installing Scapy and it's required dependancies. I have spent some time Googling for a solution but all 'solutions' seem to affect older versions of Python, or simply do not work. Script: #!/usr/bin/python import threading import Queue import time from scapy.all import * class WorkerThread(threading.Thread) : def __init__(self, queue, tid) : threading.Thread.__init__(self) self.queue = queue self.tid = tid print 'Worker: http://stackoverflow.com/questions/26229057/scapy-installation-fails-on-osx-with-dnet-import-error %d' %self.tid def run(self) : total_ports = 0 while True : port = 0 try : port = self.queue.get(timeout=1) except Queue.Empty : print 'Worker %d exiting. %d ports scanned' %(self.tid, total_ports) return #Scanning begins ip = sys.argv[1] response = sr1(IP(dst=ip)/TCP(dport=port, flags='S'), verbose=False, timeout=.2) if response : if response[TCP].flags == 18 : print 'ThreadID: %d: Got port no. %d status: OPEN' %(self.tid, port) self.queue.task_done() total_ports += 1 queue = Queue.Queue() threads = [] for i in range(1, 10) : print 'Creating WorkerThread : %d' %i worker = WorkerThread(queue, i) worker.setDaemon(True) worker.start() threads.append(worker) print 'WorkerThread %d created' %i for j in range(1, 100) : queue.put(j) queue.join() for item in threads : item.join() print 'Scanning complete' Python version is 2.7.5 and path to Python verified. which python /usr/bin/python When script is executed I am getting the following error: ./multi-threaded-scanner.py Traceback (most recent call last): File "./multi-threaded-scanner.py", line 6, in
Support Technologies AS-INTERFACE BACnet® CANopen CC-link IE Field Control IEC 61131-3 DeviceNet EtherCAT EtherNet/IP™ IEEE 1588 IO-Link LONWORKS MODBUS RTU MODBUS TCP/IP OPC UA PROFIBUS PROFINET CBA PROFINET IO USB XML Industrial Library Industrial Automation Acronyms Industrial Networking University Real http://www.rtaautomation.com/technologies/devicenet/ Time Automation's Digital Library Serial Device Isolation & Grounding What is Industrial Ethernet Guide to Ethernet Troubleshooting INDUSTRIAL ETHERNET 2nd Edition OPC UA: The Basics Modbus: The Everyman's Guide to Modbus OPC UA: The Everyman's Guide to OPC Unified Archi Company About Us RTA's Blog World's Best Testimonials Case Studies About our Founder Engineering Links Newsletter Company Photo Album Proud to be Wisconsin Made Rec Room Return Merchandise Authorization Form error codes Press DeviceNet You are here: Home / Technologies / DeviceNetDeviceNet™ Unplugged - A View "Under the Hood" for End Users DOWNLOAD IN PDF FORMAT DEVICENET SYNOPSIS This paper presents an operational description of DeviceNet™, a low-level industrial application layer protocol for industrial automation applications. DeviceNet connects simple industrial devices (sensors and actuators) with higher-level devices such as Programmable Controllers. Built on the standard CAN (Controller Area Network) physical communications standard 1756-dnb error codes DeviceNet uses CAN hardware to define an application layer protocol that structures the task of configuring, accessing and controlling industrial automation devices. This paper is intended for the DeviceNet user who desires a deeper understanding of DeviceNet. It is intended to provide much more information than is typically found in a DeviceNet network overview but much less than the several hundred page DeviceNet specification. This paper can also provide a starting point for developers considering adding DeviceNet communications to their product. Note that an abstract of a 200+ page specification is by definition incomplete. Some aspects of the technology are admittedly only lightly covered while others are not covered at all. Topics judged to provide the most insight into DeviceNet operation or clear up common misconceptions received priority. DEVICENET - A QUICK OVERVIEW DeviceNet is an application layer protocol. What does that mean? One way to look at it is that the term “Application Layer” implies that DeviceNet deals more with application data than a lower level or non-application layer protocol. For example, a link layer protocol is designed simply to move some bytes from point A to point B. It has no interest and conveys no inherent information regarding the contents of the message. Because DeviceNet is