Posted 7 Oct 2020 Hi Guys, I need help to set up modbus tcp/ip parameter for Q03UDVCPU, i want to use the predifined protocol and built in ethernet port. do you guys have some usefull references how to setup modbus tcp/ip, or is there any example program from mitsubishi? Thanks Share this post Link to post Share on other sites
Posted 8 Oct 2020 Example for prre-defined protocol are in the manual. and also there are some forum topics on how to trigger a pre-defined protocol There is also a QJ71MT91 module. Share this post Link to post Share on other sites
Posted 8 Oct 2020 1 hour ago, Gambit said: Example for prre-defined protocol are in the manual. and also there are some forum topics on how to trigger a pre-defined protocol There is also a QJ71MT91 module. I already read the manual, and tried the guide. so far i could open connection with the device ("modbus slave" program). but still cant read coil address from PLC i tried to run SP_SOCOPEN, I saw under "Ethernet diagnostic>Status of each Connection", my connection is shown, with TCP Status "Connecting" and there is no error under "Error History" when i run SP_ECPRTCL. But the connection is not last very long, is this due to error or some connection problem? Share this post Link to post Share on other sites
Posted 8 Oct 2020 connecting is good. it means connected. Maybe there is a timeout on the remote unit which causes the disconnection? There should be an error on the pre-defined protocol but your timeout is probably high. So most likely you are not getting a reply Did you have a look with wireshark ? Share this post Link to post Share on other sites
Posted 8 Oct 2020 PLC already can read the coil from simulator, problem was coil number between PLC and simulator is different, after we run SP_ECPRTCL, is PLC suppose to keep refreshing/update coil value? or i need to run SP_ECPRTCL again to updated coil value? Share this post Link to post Share on other sites
Posted 8 Oct 2020 Yes everytime you need the coil status you'll need to request it from the slave Share this post Link to post Share on other sites
Posted 8 Oct 2020 already got updated data from station, anyway, if i have 2 stations can i run SP_SOCOPEN twice? to staion A and Staion B at the same time? Share this post Link to post Share on other sites
Posted 8 Oct 2020 from the SP_ECPRTCL you can specify to run more than one pre-defined command which you have setup Share this post Link to post Share on other sites
Posted 8 Oct 2020 okay, let say i have 2 robots with 2 controller, and 1 plc, can my plc do open connection to both robots at the same time using SP_SOCOPEN ? or i have to close connetion to first robot, then open connection to second robot? Share this post Link to post Share on other sites
