When you perform CCOTF on a local or remote drop (example: add / delete a module), the change does not affect any other drop in the configuration. In Control Expert, CCOTF is called a configuration online modification in RUN mode, and is part of online action. You can perform other changes using Tools → PLC Screen, such as cold start, warm start, etc. (Refer to the CPU debugging screen.) This chapter details CCOTF capabilities and how modules execute a CCOTF request.