layout and connections vacon • 724-hour service: +358-40-8371 150 • Email: vacon@vacon.com33. LONWORKS FIELDBUS BOARD LAYOUT AND CONNECTIONSVacon LonWorks Fieldbus Board is connected to the fieldbus through 3-pin pluggable bus connector.The communication with the control board takes place through the standard Vacon Interface BoardConnector.3.1 LonWorks OPT-C4 option boardFigure 3-1. Vacon LonWorks option board OPT-C4Signal Connector DescriptionA1 21 DataA2 22 Data0Shield 23 ShieldTable 3-1. OPT-C4 bus connector signals212223H3H2H1X5lw1.fh8Archived Document