OPC no values Forum Home › Forums › Communicating with Devices › OPC › OPC no values Tagged: opc, s7, Siemens This topic has 19 replies, 2 voices, and was last updated 2 years, 6 months ago by Mikhail. Viewing 5 posts - 16 through 20 (of 20 total) ← 1 2 Author Posts March 5, 2021 at 1:37 pm #8422 MikhailModerator I need read the value and change the value, but datatype is float and yesterday I cant modify the vale Do you get an error? What text is in the communication line log? Please describe sending command issue in details. March 5, 2021 at 2:24 pm #8423 quinteloskyParticipant Sorry. I have a problem with the new dll https://ibb.co/D1ggcJ1 March 5, 2021 at 2:32 pm #8424 quinteloskyParticipant Hi Ok, was a windows problem with protection. Now is working I need do some tests For the moment works fine Perfect, you are the best March 8, 2021 at 2:58 pm #8443 quinteloskyParticipant Hi Mikhail For the moment works fine. Now I’m making the scada using the opc ua and I can read/write values without problems. Good job March 9, 2021 at 1:36 pm #8453 MikhailModerator Hi, I’m glad to hear that. Author Posts Viewing 5 posts - 16 through 20 (of 20 total) ← 1 2 You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In