Posted 1 Aug 2022 Hi, I'm trying to use send and receive function. I have to send 2 words from cpu CJ2M CPU33 to CJ1M CPU13. I use enthernet network. I saw a strange thing that if I just use send function then my data goes to second plc without having a receive function. Its that right? I didn't mentioned wich port because I'm not sure wich is. I left for automatic allocation. Share this post Link to post Share on other sites
Posted 1 Aug 2022 Yes, that is correct. I think they misnamed these instructions. SEND is really like a WRITE instruction and RECV would have been better named READ. You only need to do one command on one end. Share this post Link to post Share on other sites
Posted 2 Aug 2022 On 01/08/2022 at 5:42 PM, Michael Walsh said: Michael, do you know if the send function works trough the ETN 21 module ? Share this post Link to post Share on other sites