Toshiba TOSVERT VF-AS1 instruction manual 5bytes Blank, 28H Bytes Checksum area

Page 9

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E6581315

„Inverter → computer

At time of broadcast communication, returning of data is not executed, except for the inverters to be returned, when the inverter number is not matched, and the inverter number has only one character. This is because there will be a risk of that the returned data may be deformed.

„Data returned when data is processed normally (ASCII mode)

Omissible in one-to-one communication

Omissible

 

 

 

 

(3.5bytes

Blank)

"("

INV-NO

CMD

Communication No.

(28H)

2 bytes

1 byte

4 bytes

Checksum area

DATA

0 to 4 bytes

"&"

(26H)

SUM

2 bytes

")"

(29H)

CR

(0DH)

(3.5bytes

Blank)

Omissible

1. “(“ (1 byte)

: Start code in ASCII mode

2.INV-NO (2 bytes) : Inverter number (omitted if it is not found in the data received) ... 00 (30H, 30H) to 99 (39H, 39H)

If the inverter number matches up with that specified using a parameter, data will be return- ed to the computer. In broadcast communication, only the destination inverter (with a num- ber matching up with the smallest effective number) returns data to the computer.

In broadcast communication, no data is returned from any inverters except the inverter bearing a number that matches up with the smallest effective number.

Ex.: (*2R0000) CR -> (02R00000000) CR)

Data is returned from the inverter with the number 2 only, but no data is returned from inverters with the number 12, 22 ....

3. CMD (1 byte)

: Command ... The command is also used for a check when an inverter is tripped.

 

Under normal conditions... The uppercase letter R, W or P is returned, depending on the

 

command received: R, W or P command.

 

When an inverter is tripped... The lowercase letter r, w or p is returned, depending on the

 

command received: R, W or P command.

 

(The command received is returned with 20H added to it.)

4. Communication No.(4 bytes) :

The communication number received is returned.

5.Data (0 to 4 bytes): Data ... The data read in is returned for the R command, while the data received is returned for the W and P commands. If the data received is composed of less than 4 digits, it will be converted into 4-digit data and returned.

Ex.: (W123412) CR → (W12340012) CR)

6.

“&” (1 byte)

: Checksum discrimination code (omitted if it is not found in the data received)

7.

Sum (2 bytes)

: Checksum ... Omitted if no checksum discrimination code is found in the data received.

 

 

ASCII-coded value of the last two digits (4 bits/digit) of the sum of a series of bits (ASCII

 

 

codes) from the start code to the checksum discrimination code.

8.

“)” (1 byte)

: Stop code (omitted if it is not found in the data received)

9.

CR (1 byte)

: Carriage return code

8

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Contents E6581315② Tosvert VF-AS1 Series RS485 Communication FunctionE6581315 Read first Safety precautionsContents General outlines of the communication function BIT15 BIT8BIT7 BIT0Bit Word BIT2 Data transmission specifications Communication protocol About the handling of received frames MOUBUS-RTU Toshiba Inverter Protocol Binary mode 2FHData transmission format Data transmission format used in Ascii modeINV-NO CMD Data28H Bytes Checksum area 5bytes BlankData SUM INV-NOData transmission format used in binary mode Returned for the 57H W and 50H P commands Command receivedByte Bytes Sum 1 bytes Checksum not omissible 00H to FFH2FH Byte 4EH6EH Bytes NornTransmission format of Block Communication Page Bytes Blank Start Code INV-NO Dummy data is required for this command CommandsReads the data with the specified communication number Block communication Computer InverterRFE03077BCR RFE03CRPage Transmission errors Format error Data transmission format does not matchCommunication There is no communication number that matches Broadcast communication function VF-AS1 Ascii mode Computer → Inverter Inverter → Computer Examples of the use of communication commandsFrom the computer H = 24d  trip status RFC90CRExamples of Communication programs Next =LENS$ For I=1 to LInput #1,B$ Goto160 T=TIMER COUNT=TIMER-T If Count 0 then T=TIMERPrint #1,B$ Page End If MSComm1.Output = Text2.Text & Chr13 End SubText2.Text = Text1.Text = End Sub Inverter number  MODBUS-RTU protocolRead command MODBUS-RTU transmission formatCRC Blank Command 1 byte Write command5bytes Blank Command 1 byte Text size is 8 bytes fixed InverterCRC Generation Error codesBit counter = End Return CRCInter-drive communication Never use pin-7 P11 QWiring 4-wire RS485 communication） E6581315 QWiring 2-wire RS485 communicationPage Parameters relating to the slave side example =0.01% Proportional control of speed90.00Hz 45.00Hz Slave 100.00Hz 00%Slave 100.00Hz1 00% 80.00Hz 40.00HzINV-NO 1 byte Inverter number Transmission format for inter-drive communication0OFF Communication parametersMODBUS-RTU Inverter number Baud rate,  , Parity PC → INV „ Timer Time-out period Computer linkMaster INV To Slave INV INV → PC PC → INVSend waiting time ,  Free notesUse this function for the following case Communication commands commands from the computer Commands and monitoring from the computerPI OFF OFFForcibly braked Preliminary excitation Electric Power quantityBrake release B Braking answer BAWire RS485 communication FA32 „ FM analog output FA51 „ Terminal board output data FA50„ AM analog output FA52 Output terminal no Specified data outputMonitoring from the computer RFD00CRUnit 0.01% N·m RES „ Input terminal board status FD06, FE06Input terminal function selection 9 f119 BIT15„ Output terminal board status FD07, FE07 ST=ON ST=OFF „ Inverter operating status 1 FD01, FE01„ Inverter operating status 3 FD49, FE49 „ Inverter operating status 2 FD42, FE42„ Inverter operating command mode status FD45, FE45 „ Inverter operating frequency mode status FD46, FE46Preset speed operation „ Alarm information monitor FC91 „ Cumulative operation time alarm monitor FE79Bit Specifications Remarks E6581315 Model Data „ Inverter model capacity code FB05LED setting by communication Parameter Name Range SettingUtilizing panel LEDs and keys by communication „ Block Communication Function for LED Display Blank Ascii LED display data code 00H-1FH are blankKey utilization by communication FA10=0FA10=1 Parameter data ROM EEPPage FE02 Frequency command value 01Hz Alarm codeFE19 Torque command FE29 Input powerTion FE80 Cumulative power on time E6581315 FD50 Light-load high-speed torque 01%FE84 Binary input value option Can Appendix 1 Table of data codesSUB ESCResponse time „ Data transmission time Appendix 2 Response timeVF-A7 Appendix 3 Compatibility with the communication functionAppendix 4 Troubleshooting Appendix 5 Connecting for RS485 communication RXB RXATXA TXB
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