FBD/LD Parser Error (FBDP0003): An output connector with the name '...' does already exist.
In FBD/LD, connectors can be used instead of lines. In order to substitute a line, one or more input connectors (which is/are read within the graphical code network) and exactly one output connector (which is written within the graphical code network) with the same name are required. Connectors are only valid within the same code worksheet. For "crossing" worksheets, jumps can be used.
In a worksheet, two output connectors exist with the same name. An output connector, however, must not be written more than once, i.e., it must be unique within a POU. The affected connectors appear with a red background in the graphical worksheet.
Double-click the affected connector and rename it. Keep in mind that at least two connectors belong together when renaming the connector.