ORSO2001 Posted November 3, 2017 Report Share Posted November 3, 2017 Dears All, Small introduction...just few days ago I finished one project that include MODBUS communication using RS485 CPU COM port without any problem. I started with a new project; for the moment I don't included I/O modules; I created some STRUCT...I initialized TX/RX as "Physically-Serial COM" and with surprise two RS485 CPU COM, port and port 1, were added in the I/O !? If I "select" Modbus Panel the "port 1" disapear but the "port" still be present....just to test I created a new project and as first action I initialized as TX/RX and only 1 RS485 CPU COM port appears...what can be wrong in my project? I am using 1.21.51; Windows 10. thanks Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.