Profibus System Integration PDF 4.03MB - Schneider Electric

ConnectorsPROFIBUS DPSeveral connector types are available for PROFIBUS DP, including 9-pin Sub-D,M-12 (5 pins, 3 contacts assigned), hybrid, or screw/spring connectors. 9-pin Sub-Dconnectors are typically used inside control cabinets, while M-12 or hybrid connectorsare used outside control cabinets.Pin Signal Descriptionl1234567(Shield)M24RxD/TxD-PCNTR-PDGNDVP aP24CableDeviceShield or potential equalizationGround of 24V powersupplyControl of repeaterdirectionData ground (referencevoltage to VP)Power supply +5v (e.g. forbus termination)+24V power supplySpecificationNotrecommendedOptional bMandatoryOptional bMandatoryMandatoryOptional b1 5698RxD/TxD-NReceive/Transmit data; line A (green)Control of repeaterdirectionMandatoryOptional b9 CNTR-Na Minimum current capabillity is 10mAb These signals should be provided by the device if converters from RS485 to fibre optictrasmission are to supportedTypical cabling of 9-pin Sub-D connectors consists of wiring them in a daisy-chain. Asa result, intermediate connectors will typically have two cable entries, each with a setof terminals, normally labelled “A” (red wire) and “B” (green wire), and terminatingconnectors will only have one cable entry.PROFIBUS PAPROFIBUS PA M-12 4 pins connectorPin 1 PA+Pin 2 Not connectedPin 3 PA-Pin 4 Not connectedScrewed gland Schelding31