Toshiba VF-AS1 „ Timer Time-out period Computer link, Pc → Inv, Master INV To Slave

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E6581315

7.3.Communication time-out time (), Communication time-out action (f804)

The timer function is mainly used to detect a break in a cable during communication, and if no data is sent to an inverter within the preset time, this function makes the inverter trip () or issue an alarm (). With the communication time-out action parameter (), you can specify what the inverter should do (trip, issue an alarm or do nothing) if a time-out occurs.

„How to set the timer

By default, the communication time-out time parameter () is set to  (OFF).

*Timer adjustment range

About 1 sec. (01H) to about 100 sec. (64H) / Timer off (0H)

„How to specify what an inverter should do if a time-out occurs

By default, the communication time-out action parameter () is set to  ( trip) for both 2-wire and 4-wire RS485 communication.

*Selection of time-out action (Range: 0 to 8 ... For details refer to “6. Communication parameters.) The action of the inverter at the occurrence of a time-out can be selected from among “do noth- ing,” “trip ()” and “alarm ()” individually for two-wire and four-wire RS485 communica- tion.

„How to start the timer

If the timer is set from the operation panel, it will start automatically the instant when communication is established for the first time after the setting.

If the timer is set from the computer, it will start automatically the instant when communication is established after the setting.

If the timer setting is stored in the EEPROM, the timer will start when communication is established for the first time after the power has been turned on.

Note that, if the inverter number does not match or if a format error occurs, preventing the inverter from returning data, the timer function will assume that no communication has taken place and will not start.

„How to disable the timer

To disable the timer, set its parameter to 0.

Ex.: To disable the timer function from the computer (To store the timer setting in the EEPROM)

Computer → Inverter

Inverter → Computer

(W08030)CR

(W08030000)CR

... Sets the timer parameter to 0 to disable it.

„Timer

Time-out period

Computer link

Inter-drive communication

PC → INV

Master INV

to Slave

INV

INV → PC

PC → INV

Master INV

to Slave

INV

The timer measures the time elapsed before the inverter ac- knowledges receipt of data after it acknowledged receipt of the previ- ous data.

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Contents Tosvert VF-AS1 Series RS485 Communication Function E6581315②Read first Safety precautions E6581315Contents Bit Word General outlines of the communication functionBIT15 BIT8BIT7 BIT0 Data transmission specifications BIT2MOUBUS-RTU Communication protocolAbout the handling of received frames Binary mode 2FH Toshiba Inverter ProtocolData transmission format used in Ascii mode Data transmission formatINV-NO CMD Data5bytes Blank 28H Bytes Checksum areaINV-NO Data SUMData transmission format used in binary mode Command received Returned for the 57H W and 50H P commandsByte Bytes Sum 1 bytes Checksum not omissible 00H to FFHNorn 2FH Byte 4EH6EH BytesTransmission format of Block Communication Page Bytes Blank Start Code INV-NO Commands Dummy data is required for this commandReads the data with the specified communication number Block communication Computer InverterRFE03CR RFE03077BCRPage Communication There is no communication number that matches Transmission errorsFormat error Data transmission format does not match Broadcast communication function VF-AS1 Examples of the use of communication commands Ascii mode Computer → Inverter Inverter → ComputerFrom the computer H = 24d  trip status RFC90CRExamples of Communication programs =LENS$ For I=1 to L NextInput #1,B$ GotoPrint #1,B$ 160 T=TIMER COUNT=TIMER-TIf Count 0 then T=TIMER Page Text2.Text = Text1.Text = End Sub End IfMSComm1.Output = Text2.Text & Chr13 End Sub MODBUS-RTU protocol Inverter number CRC Read commandMODBUS-RTU transmission format Write command Blank Command 1 byte5bytes Blank Command 1 byte Text size is 8 bytes fixed InverterError codes CRC GenerationBit counter = End Return CRCInter-drive communication E6581315 QWiring 2-wire RS485 communication Never use pin-7 P11 QWiring 4-wire RS485 communication）Page Parameters relating to the slave side example Proportional control of speed =0.01%Slave 100.00Hz 00% 90.00Hz 45.00HzSlave 100.00Hz1 00% 80.00Hz 40.00HzTransmission format for inter-drive communication INV-NO 1 byte Inverter numberCommunication parameters 0OFFMODBUS-RTU Baud rate,  , Parity  Inverter number„ Timer Time-out period Computer link PC → INVMaster INV To Slave INV INV → PC PC → INVUse this function for the following case Send waiting time , Free notes Commands and monitoring from the computer Communication commands commands from the computerPI OFF OFFElectric Power quantity Forcibly braked Preliminary excitationBrake release B Braking answer BAWire RS485 communication FA32 „ Terminal board output data FA50 „ FM analog output FA51„ AM analog output FA52 Output terminal no Specified data outputUnit 0.01% N·m Monitoring from the computerRFD00CR „ Input terminal board status FD06, FE06 RESInput terminal function selection 9 f119 BIT15„ Output terminal board status FD07, FE07 „ Inverter operating status 1 FD01, FE01 ST=ON ST=OFF„ Inverter operating status 2 FD42, FE42 „ Inverter operating status 3 FD49, FE49Preset speed operation „ Inverter operating command mode status FD45, FE45„ Inverter operating frequency mode status FD46, FE46 Bit Specifications Remarks „ Alarm information monitor FC91„ Cumulative operation time alarm monitor FE79 E6581315 „ Inverter model capacity code FB05 Model DataUtilizing panel LEDs and keys by communication LED setting by communicationParameter Name Range Setting „ Block Communication Function for LED Display Ascii LED display data code 00H-1FH are blank BlankFA10=1 Key utilization by communicationFA10=0 Parameter data EEP ROMPage Alarm code FE02 Frequency command value 01HzFE19 Torque command FE29 Input powerFE84 Binary input value option Tion FE80 Cumulative power on timeE6581315 FD50 Light-load high-speed torque 01% Appendix 1 Table of data codes CanSUB ESCAppendix 2 Response time Response time „ Data transmission timeAppendix 3 Compatibility with the communication function VF-A7Appendix 4 Troubleshooting Appendix 5 Connecting for RS485 communication RXA RXBTXA TXB
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