Schneider Electric VW3 A3 303 Connection via junction boxes, RS485 double shielded twisted pair

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5. Connecting to the bus

5. 4. Connection via junction boxes

1.Master (PLC, PC or communication module)

2.Modbus cable depending on the type of master (see table)

3.Modbus cable TSX CSAp00

4.Subscriber sockets TSX SCA 62

65. Modbus drop cable VW3 A8 306 2

ATV 71

bConnection accessories

Description	Ref.	Catalog
		number
Subscriber socket	4	TSX SCA 62

2female 15-way SUB-D connectors, 2 screw terminals, and an RC line terminator, to be connected using cable VW3 A8 306 or VW3 A8 306 D30

b Connection cables

Description	Length (m)	Connectors	Ref.	Catalog
				number
Cables for Modbus bus	3	1 9-way SUB-D connector and	6	VW3 A8 306 2
		1 male 15-way SUB-D connector
		for TSX SCA 62

RS485 double shielded twisted pair	100	Supplied without connector	3	TSX CSA 100
cables
cables	200	Supplied without connector	3	TSX CSA 200
	200	Supplied without connector	3	TSX CSA 200

	500	Supplied without connector	3	TSX CSA 500

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Contents Altivar Contents Before you begin Electric shock will result in death or serious injuryInstallation Manual Documentation structureProgramming Manual Communication Parameters ManualIntroduction PresentationNotation Hardware setup Installing the card in the driveReceipt Hardware descriptionSwitch coding Choosing polarizationCoding the address Address 1234Connecting to the bus Wiring recommendationsModbus RS485 standard Connection via RJ45 wiring system Connection accessoriesConnection cables Connection cables for the master Type of master Master interface Description Catalog numberTWD XCA RJ030 TSX SCP CMConnection via junction boxes Description Catalog Number Subscriber socketRS485 double shielded twisted pair CablesTSX CSA500 TSX P ACCConfiguration Communication parametersControl Command Control via Modbus in I/O profileControl via Modbus or the terminals in I/O profile Parameter Value CommentControl via Modbus in Drivecom profile Control via Modbus or the terminals in Drivecom profileConfiguration Example of configuration via the graphic display terminal Communication scannerRDY NET COM. Scanner InputCommunication faults COM. Fault ManagementCONFIG. COMM. MAP Monitored parametersFormat Format Range Terminal displayDiagnostics Checking the addressLEDs Green RUN Red ERR Meaning Corrective actionRUN NET Communication MAPCOM. Scanner Input MAP COM Scan Output MAP CMD. Word ImageInput variable Scanner parameter Output variable Scanner parameterCOM Scan Output MAP Communication fault Card faultModbus protocol PrincipleSlave Slave j Slave k RTU mode Ascii modeModes Slave address Function code DataModbus functions available Read Holding/Input Registers 3/4Code Modbus name Description Broadcast Size of data Write Single Register Diagnostics Get Comm Event Counter 11 = 16#0B Write Multiple Registers 16 = 16#10Read/Write Multiple Registers 23 = 16#17 Read Device Identification 43 = 16#2B MachineExample of positive response MEIOutput variables Logic address Default assignment Input variables Logic address Default assignmentCode Modbus name Description Size of data Input variable address Logic address Default value Parameter Logic ReadParameter Logic Output control Parameter assignedInput monitoring Value Parameter assignedCode Error code Exception responsesResponse Read non-existent or protected parameters Logic address Parameter ValueAppendix RS485 standardModbus 2-wire standard schematic MasterModbus 4-wire standard schematic Uni-Telway schematic Wire Jbus schematic Type of trunk cable Cable with 1 shielded twisted pairCreating a Modbus bus using non-standard equipment Different scenariosRecommendations Calculating the polarization ExampleRS485 schematic for the card Card connector pinoutContact no. Signal SUB-DAtv71ModbusJbusENV1 2005-05