Posted 22 Jun 2021 I am trying to communicate power flex 523 drives to micrologix 1400 directly through DSI using 1763-nc01 cable. I have considered channel 0 in plc as modbus RTU master and trying to connect but not connecting. So am i doing it correctly. Any suggestions? Share this post Link to post Share on other sites
Posted 22 Jun 2021 Have you set a node number in the drive? And the other communication parameters shown in the 523's user manual, appendix C ? The drive only supports the few Modbus functions that read/write holding registers. Make sure you are calling the supported modbus functions from your ladder logic. Can you show your ladder logic? Share this post Link to post Share on other sites
Posted 23 Jun 2021 Use RA sample code to start https://www.rockwellautomation.com/search/ra-en-US;keyword=525;startIndex=10;activeTab=Sample_Code;spellingCorrect=true;facets=;languages=en;locales=en_GLOBAL,en-US;sort=bma;isPLS=false;sessionID=947f5258-279b-023c-2670-a5cd3e6ccc34;deepLinking=false 1 person likes this Share this post Link to post Share on other sites