Configuration | Schneider Electric VW3 A3 303 guide

6. Configuration

6. 1. Communication parameters

Configure the following parameters in the [1.9 - COMMUNICATION] (COM-)menu, [Uni-Telway/Modbus](UtL-)submenu: [Protocol] (PrO), [Bit rate] (bdr) and [Format] (FOr).

These parameters can only be modified when the motor is stopped. Modifications can only be taken into account by the drive following a power break.

Parameter	Possible values	Terminal display	Default value
[Protocol]	Uni-Telway	[Unitelway] (UtE)	[Unitelway] (UtE)
(PrO)	Modbus/RTU	[Modbus RTU] (rtU)
	Modbus/ASCII	[Modbus ASCII] (ASC)
[Address]	0 to 247	[0] (0) to [247] (247)	Value taken from the address switches
(AdrC)

[Bit rate]	4800 bps	[4800 Bd] (4 8)	[19.2 Kbps] (19 2)
(Bdr)	9600 bps	[9600 Bd] (9 6)
	19,200 bps	[19200 Bd] (19 2)

[Format]	In RTU mode only:		[8-O-1] (8o1)
(FOr)	8 data bits, odd parity, 1 stop bit	[8-O-1] (8o1)
	8 data bits, even parity, 1 stop bit	[8-E-1] (8E1)
	8 data bits, no parity, 1 stop bit	[8-N-1] (8n1)
	8 data bits, no parity, 2 stop bits	[8-N-2] (8n2)
	In RTU and ASCII modes:
	7 data bits, odd parity, 1 stop bit	[7-O-1] (7o1)
	7 data bits, even parity, 1 stop bit	[7-E-1] (7E1)
	7 data bits, odd parity, 2 stop bits	[7-O-2] (7o2)
	7 data bits, even parity, 2 stop bits	[7-E-2] (7E2)

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Schneider Electric VW3 A3 303 user manual Configuration, Communication parameters

Contents

Altivar Contents Before you begin Electric shock will result in death or serious injury Programming Manual Installation ManualDocumentation structure Communication Parameters Manual Notation IntroductionPresentation Receipt Hardware setupInstalling the card in the drive Hardware description Coding the address Switch codingChoosing polarization Address 1234 Modbus RS485 standard Connecting to the busWiring recommendations Connection cables Connection via RJ45 wiring systemConnection accessories TWD XCA RJ030 Connection cables for the masterType of master Master interface Description Catalog number TSX SCP CM RS485 double shielded twisted pair Connection via junction boxesDescription Catalog Number Subscriber socket Cables TSX CSA500 TSX P ACC Configuration Communication parameters Control via Modbus or the terminals in I/O profile Control CommandControl via Modbus in I/O profile Parameter Value Comment Control via Modbus in Drivecom profile Control via Modbus or the terminals in Drivecom profile Configuration RDY NET Example of configuration via the graphic display terminalCommunication scanner COM. Scanner Input Communication faults COM. Fault Management Format CONFIG. COMM. MAPMonitored parameters Format Range Terminal display LEDs DiagnosticsChecking the address Green RUN Red ERR Meaning Corrective action COM. Scanner Input MAP RUN NETCommunication MAP COM Scan Output MAP CMD. Word Image COM Scan Output MAP Input variable Scanner parameterOutput variable Scanner parameter Communication fault Card fault Slave Slave j Slave k Modbus protocolPrinciple Modes RTU modeAscii mode Slave address Function code Data Code Modbus name Description Broadcast Size of data Modbus functions availableRead Holding/Input Registers 3/4 Write Single Register Diagnostics Get Comm Event Counter 11 = 16#0B Write Multiple Registers 16 = 16#10 Read/Write Multiple Registers 23 = 16#17 Read Device Identification 43 = 16#2B Machine Example of positive response MEI Code Modbus name Description Size of data Output variables Logic address Default assignmentInput variables Logic address Default assignment Parameter Logic Input variable address Logic address Default valueParameter Logic Read Input monitoring Output controlParameter assigned Value Parameter assigned Response Code Error codeException responses Read non-existent or protected parameters Logic address Parameter Value Appendix RS485 standard Modbus 2-wire standard schematic Master Modbus 4-wire standard schematic Uni-Telway schematic Wire Jbus schematic Type of trunk cable Cable with 1 shielded twisted pair Recommendations Creating a Modbus bus using non-standard equipmentDifferent scenarios Calculating the polarization Example Contact no. Signal RS485 schematic for the cardCard connector pinout SUB-D Atv71ModbusJbusENV1 2005-05