Appendix 5 Connecting for RS485 communication | Toshiba VF-AS1

efesotomasyon.com -Toshiba inverter,drive,servo,plc

E6581315

Appendix 5 Connecting for RS485 communication

Connector diagram for 2-wire RS485 communication

Pin-8Pin-1

Signal name	Pin number	Description
RXD+/TXD+	4	Same phase reception data (positive line)
RXD-/TXD-	5	Anti-phase reception data (negative line)
FWE	6	FEW (Do not connect the cable.)
SG	8	Ground line of signal data
	(3)
PRG(TX)	2	PRG (Do not connect the cable.)
PRG(RX)	1	PRG (Do not connect the cable.)
P11	7	11V (Do not connect the cable.)

Connecting diagram for 2-wire RS485 communication

*Never use pin-7 (P11).

		Straight
CN1	Master	Slave
CN1
Pin-4	RXD+/TXD+	RXD+/TXD+
Pin-5	RXD-/TXD-	RXD-/TXD-

Pin-8	SG			SG
Pin-8	SG			SG
(Pin-3)
(Pin-3)

Straight

Slave

RXD+/TXD+

RXD-/TXD-

SG

Straight

Slave

RXD+/TXD+

RXD-/TXD-

SG

Terminating resistance 120Ω-1/2W

71

Image 72

Toshiba TOSVERT VF-AS1 instruction manual Appendix 5 Connecting for RS485 communication

Contents

Tosvert VF-AS1 Series RS485 Communication Function E6581315② Read first Safety precautions E6581315 Contents General outlines of the communication function BIT15 BIT8BIT7 BIT0Bit Word Data transmission specifications BIT2 Communication protocol About the handling of received framesMOUBUS-RTU Binary mode 2FH Toshiba Inverter Protocol Data transmission format used in Ascii mode Data transmission formatINV-NO CMD Data 5bytes Blank 28H Bytes Checksum area INV-NO Data SUM Data 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 FFH Norn 2FH Byte 4EH6EH Bytes Transmission 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 Inverter RFE03CR RFE03077BCRPage Transmission errors Format error Data transmission format does not matchCommunication There is no communication number that matches Broadcast communication function VF-AS1 Examples of the use of communication commands Ascii mode Computer → Inverter Inverter → ComputerFrom the computer H = 24d  trip status RFC90CR Examples of Communication programs =LENS$ For I=1 to L NextInput #1,B$ Goto 160 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 MODBUS-RTU protocol Inverter number  Read command MODBUS-RTU transmission formatCRC Write command Blank Command 1 byte5bytes Blank Command 1 byte Text size is 8 bytes fixed Inverter Error codes CRC GenerationBit counter = End Return CRC Inter-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 40.00Hz Transmission format for inter-drive communication INV-NO 1 byte Inverter number Communication parameters 0OFF MODBUS-RTU Baud rate,  , Parity  Inverter number „ Timer Time-out period Computer link PC → INVMaster INV To Slave INV INV → PC PC → INV Send waiting time ,  Free notesUse this function for the following case Commands and monitoring from the computer Communication commands commands from the computerPI OFF OFF Electric Power quantity Forcibly braked Preliminary excitationBrake release B Braking answer BA Wire RS485 communication FA32 „ Terminal board output data FA50 „ FM analog output FA51„ AM analog output FA52 Output terminal no Specified data output Monitoring from the computer RFD00CRUnit 0.01% N·m „ 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, FE49 „ 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 „ Inverter model capacity code FB05 Model Data LED setting by communication Parameter Name Range SettingUtilizing panel LEDs and keys by communication „ Block Communication Function for LED Display Ascii LED display data code 00H-1FH are blank Blank Key utilization by communication FA10=0FA10=1 Parameter data EEP ROMPage Alarm code FE02 Frequency command value 01HzFE19 Torque command FE29 Input power Tion FE80 Cumulative power on time E6581315 FD50 Light-load high-speed torque 01%FE84 Binary input value option Appendix 1 Table of data codes CanSUB ESC Appendix 2 Response time Response time „ Data transmission time Appendix 3 Compatibility with the communication function VF-A7 Appendix 4 Troubleshooting Appendix 5 Connecting for RS485 communication RXA RXBTXA TXB