Schneider Electric VW3 A3 303 user manual Communication fault, Card fault

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7. Diagnostics

7. 5. Communication fault

Modbus communication faults are indicated by the red ERR LED on the Modbus card.

In the factory configuration, a communication fault will trigger a resettable [Com. network] (CnF) drive fault and initiate a freewheel stop.

It is possible to change the response of the drive in the event of a Modbus communication fault (see the Configuration section).

-[Com. network] (CnF) drive fault (freewheel stop, stop on ramp, fast stop or DC injection braking stop)

-No drive fault (stop, maintain, fallback)

The Parameters Manual contains a detailed description of how to manage communication faults (see the "Communication monitoring" section).

•Following initialization (power-up), the drive checks that at least one command or reference parameter has been written for the first time by Modbus.

•Then, if a communication fault occurs on Modbus, the drive will react according to the configuration (fault, maintain, fallback, etc.).

7. 6. Card fault

The [internal com. link] (ILF) fault appears when the following serious problems occur:

-Hardware fault on the Modbus card

-Dialog fault between the Modbus card and the drive

The response of the drive in the event of an [internal com. link] (ILF) fault cannot be configured, and the drive trips with a freewheel stop. This fault cannot be reset.

Two diagnostic parameters can be used to obtain more detailed information about the origin of the [internal com. link] (ILF) fault:

-[Internal link fault 1] (ILF1) if the fault has occurred on option card no. 1 (installed directly on the drive)

-[Internal link fault 2] (ILF2) if the fault has occurred on option card no. 2 (installed on option card no. 1) The Modbus card can be in position 1 or 2.

The [Internal link fault 1] (ILF1) and [Internal link fault 2] (ILF2) parameters can only be accessed on the graphic display terminal in the [1.10 DIAGNOSTICS] (DGt-)menu, [MORE FAULT INFO] (AFI-)submenu.

Value

Description of the values of the [Internal link fault 1] (ILF1) and [Internal link fault 2] (ILF2) parameters

0

No fault

1

Loss of internal communication with the drive

 

 

2

Hardware fault detected

3

Error in the EEPROM checksum

4

Faulty EEPROM

 

 

5

Faulty Flash memory

6

Faulty RAM memory

7

Faulty NVRAM memory

 

 

8

Faulty analog input

9

Faulty analog output

10

Faulty logic input

 

 

11

Faulty logic output

101

Unknown card

102

Exchange problem on the drive internal bus

 

 

103

Time out on the drive internal bus (500 ms)

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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
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