Danger for user and machinery
When downloading changes with connected periphery, programming errors may present a danger for both users and machinery.
Unexpected program behavior
With certain pulse output instructions, pulse output will stop when performing online editing (pay attention to the warning in the description of these instructions).
Use to make changes in your PLC program. Make sure the project in the Project pane has been downloaded to the PLC (). After you have made the desired changes, select . The dialog Download project to PLC appears. Here you can choose to download the complete project or only the program code differences to the PLC in RUN mode.
The online edit mode is available in PROG or in RUN mode.
The number of steps to be downloaded depends on the PLC type as described in the section "Download program code changes to PLC".