ScrewterminalX312123456ScrewterminalX1BackplaneAnglebracketRS485PWBIEC06000517 V1 ENFigure 538: RS485 connector• 2-wire: Connect pin 1 to pin 6 and pin 2 to pin 5• Termination (2-wire): Connect pin 1 to pin 3• Termination (4-wire): Connect pin 1 to pin 3 and pin 4 to pin 6Soft ground connector pinoutsA second 2-pole screw connector is used for the connection of IO-ground. It can beused in two combinations like:• Unconnected: No ground of the IO-part · .• Soft grounded: The IO is connected to the GND with an RC net parallel with aMOV21.2.13.3 Technical dataTable 921:Galvanic RS485 communication moduleQuantity Range or valueCommunication speed 2400–19200 baudsExternal connectors RS-485 6-pole connectorSoft ground 2-pole connectorSection 21 1MRK502052-UEN BIED hardware1188Technical manual
