https://forge.codesys.com/forge/talk/CODESYS-V2/thread/7f492de12c/2020-02-27T18:54:37.781000ZRecent posts to CanOpen Manager problems2020-02-27T18:54:37.781000Z2020-02-27T18:54:37.781000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com15d8977083d0b85c23d9a17a104c3086a29d68c3

<div class="markdown_content"><p>Hi,<br/> this is part of the runtime toolkit delivery which the plc manufacturer get on purchsing the runtime.</p> <p>BR<br/> Edwin</p></div>

2020-02-27T18:54:34.486000Z2020-02-27T18:54:34.486000Zhence.perssonhttps://forge.codesys.com/u/hence-persson/https://forge.codesys.com115eb815b4d7534c8f084652940f0b5cf87413f6

<div class="markdown_content"><p><strong>guess this is still a plc problem, which plc is it. (Manufacturer?) </strong><br/> Yup, IFM. (Se bottom of first post for exact model). But we are now testing with another brand.<br/> The only errors I have when watching with CANOPEN_DEBUG is due to erroneous EDS files.<br/> Objects that doesnt exist and such. But that I already knew and have jumps to next line in the SDO configuration. </p> <p><strong>You need to check with the so called CAN mini Driver conformance test.</strong><br/> For future reference what is this where can i find more info?</p></div>

2020-02-27T18:54:33.300000Z2020-02-27T18:54:33.300000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.comd54be8d8280e83248f519703f057fefd33ffd020

<div class="markdown_content"><p>Hi,<br/> guess this is still a plc problem, which plc is it. (Manufacturer?)<br/> You need to check with the so called CAN mini Driver conformance test.<br/> BR<br/> Edwin</p></div>

2020-02-27T18:54:30.012000Z2020-02-27T18:54:30.012000Zhence.perssonhttps://forge.codesys.com/u/hence-persson/https://forge.codesys.com3cacacf4d46dfac910c34b77ad2fbe71491acd3e

<div class="markdown_content"><p>The earlier problems has been resolved by a firmware update of the PLC.</p> <p>BUT....</p> <p>I have more CanOpen problems.. The CanOpen manager goes offline sometimes and restarts so if it werent for that I have a remote controller with emergency stop I maybe wouldnt notice this.</p> <p>Have tried to add CANOPEN_DEBUG to the compiler define.. Every time i have tried that the PLC has crashed.</p> <p>The bus is set at 500kb/s.<br/> Monitoring with Kvaser CanKing software shows me no error frames (Other than a large bunch when I turn the power on but then it stops.) and a bus load of ~12%</p></div>

2020-02-27T18:54:28.813000Z2020-02-27T18:54:28.813000Zeschwellingerhttps://forge.codesys.com/u/eschwellinger/https://forge.codesys.com83f4d7aa670c16995ebe0365cab3a441c8ef68d9

<div class="markdown_content"><p>Hi,<br/> Add CANOPEN_DEBUG as compiler define... then check the plc logger for more details <br/> BR<br/> Edwin</p></div>

2020-02-27T18:54:25.517000Z2020-02-27T18:54:25.517000Zhence.perssonhttps://forge.codesys.com/u/hence-persson/https://forge.codesys.com820cc8fa60c96decbdd8eec9575555462bf2a609

<div class="markdown_content"><p>Hello all.</p> <p>My costumer wanted me to test the CanOpen bus for stability.</p> <p>The tests for loose connections and the ability for the CanOpen Bus to recover from that failed..</p> <p><strong>Problem 1.</strong><br/> If i try to plug unplug a contact for a Device sometimes the Manager Hangs..<br/> CanOpen manager is green, Node is red, When i monitor the bus the node sometimes is in operational sometimes in pre operational and sending heartbeats. If i try to send NMT Operational no message goes to the bus. Only way to recover is to cut the power to the PLC and reboot.</p> <p>After much testing I found a way to make this problem go away.. I configured all my nodes and saved the configuration in the node. I chose the CanOpen manager not to initialize the nodes and instead wrote some code to check if any of my nodes is either stopped or preop and if they were I started them.</p> <p>As this worked i think there is a bug hidden in the CanOpen manager code so it can become stuck in some state.. <strong>Is there any possibility to reset the CanOpen manager from code?</strong></p> <p><strong><span><span>[b]</span></span>Problem 2.</strong><span>[/b]</span><br/> If we remove the CanOpen GND the same behaivior as above still comes and i need to restart the PLC.. Kernel state is No error or guarding error. The nodes is sending heartbeats but the manager cannot send anything to the bus..</p> <p>I am using Codesys V3.5 SP10 Patch 1<br/> The PLC is a brand new IFM Mobile Controller CR0720.</p></div>