Security for the Runtime/PLC Communication with the controller connected in the CODESYS project should be protected against unauthorized access in the following ways: Enabling user management: simple

Security for CODESYS WebVisu Protect the connection between the web server of the controller and the visualization client with the following measures against unwanted access: Configure an HTTPS connec

What to do when... :

Certificate Expired If the certificate from the controller for encrypted communication has expired (valid from "not before" until "not after"), you get a prompt with a corresponding message in CODESYS

New Certificate (while the current one is still valid) A new certificate can be issued before the existing certificate expires. This makes it possible for the encrypted communication to continue seaml

Client Does Not Support Security Feature User management The following CODESYS clients do not support user management yet: WebServer < V3.5.14.0 In order for these clients to be able to establish a co

Problems at Login If you have entered an incorrect password when logging in to the user management of the controller, then the login dialog reappears immediately afterwards. After three incorrect atte

Permitting Encrypted Communication Again Tip Remember that not every controller supports the deactivation of encrypted communication. Important We strongly advise against disabling encrypted communica

Reference: Programming :

Programming Languages and Editors You program a POU in each case in the editor for the implementation language which you have selected when you created the POU. CODESYS provides a text editor for ST a