Posted 14 Mar 2018 Hi all, My Task: To control write to registers to my MSI430 safety PLC from Leuze Electronic using a HMI as a master. Protocol: Modbus TCP MSI430 (Modbus TCP - server/slave) Generic HMI (Modbus TCP - client/master) I'm reading Okay from the Register address 401101-40110 But I'm not able to write to the MSI PLC to address 402101-402109 Please see the attached images for gateway description for the device. Please advice/guide on how this could be done. I have tried using MBPoll and it says Illegal Data Address. Kind Regards NarkO Please find the below link for the manual Share this post Link to post Share on other sites
Posted 14 Mar 2018 https://drive.google.com/open?id=19MWko-p8p-P6Lf-LX3dwhOqiWUwL9raV Share this post Link to post Share on other sites