E6581222③ TOSVERT VF-S11 Communications Function Instruction Manual Notice 1. Make sure that this instruction manual is delivered to the end user of the inverter. 2. Read this manual before first using the communications function, and keep it handy as a reference for maintenance and inspections. * The contents of this manual are subject to change without notice. © TOSHIBA INVERTER CORPORATION 2004 All rights reserved.
E6581222 Read first Safety precautions This manual and labels on the inverter provide very important information that you should bear in mind to use the inverter properly and safely, and also to avoid injury to yourself and other people and damage to property. Read the safety precautions in the instruction manual for your inverter before reading this manual and strictly follow the safety instructions given.
E6581222 Contents 1. 2. 3. 4. General outlines of the communications function........................................................................................................ 3 Data transmission specifications................................................................................................................................. 4 Communication protocol ...........................................................................................................................................
E6581222 1. General outlines of the communications function This manual explains the serial communications interface function provided for the TOSVERT VFS11 series of industrial inverters. The TOSVERT VF-S11 series of inverters can be connected to a computer or a controller (hereinafter referred to as the computer) for data communications via RS232C converter (RS2001Z) or RS485 converter (RS4001Z, RS4002Z, RS4003Z).
E6581222 2.
E6581222 3. Communication protocol This communication protocol supports the TOSHIBA Inverter Protocol and part of MODBUS-RTU protocol. Select the desired protocol from in the following communication protocol selection parameters (). “Parameter Name , Communication Number. 0829” Data Range: 0, 1 (Initial value: 0) 0: TOSHIBA Inverter Protocol (Includes inter-drive communications) 1: MOUBUS-RTU protocol * A parameter change is reflected when the inverter is reset, such as in power off.
E6581222 4. TOSHIBA Inverter Protocol Select “TOSHIBA Inverter Protocol” (=) in the communication protocol selection parameters. “TOSHIBA Inverter Protocol” (=) is set for initial communication protocol selection of shipment setting. (See “3. Communication protocol.
E6581222 ■ Binary mode (1) In binary mode, the start code is “2FH(/).” The inverter rejects all data items entered before the “2FH(/).” If two or more “2FH(/)” are entered, the “2FH(/)” entered last will be judged valid and all “2FH(/)” entered before will be ignored. If the “2FH(/)” is not recognized because of a format error or for any other reason, no error code will be returned since the data is not recognized at all.
E6581222 4.1. Data transmission formats ■ Note: The term “trip status” used in this manual includes retry waiting status and trip retention status. 4.1.1. Data transmission formats used in ASCII mode A communication number is used to specify a data item, all data is written in hexadecimal, and JISX-0201 (ASCII (ANSI))-compliant transmission characters are used. ■ Computer → VF-S11 Omissible in one-to-one communications "(" (28H) INV-NO 2 bytes CMD 1 byte For the W and P commands only Communication No.
E6581222 ■ VF-S11 → 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 "(" (28H) INV-NO 2 bytes CMD 1 byte Communication No.
E6581222 • Data returned when data is not processed normally (ASCII mode) In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type number is returned to the computer in addition to the checksum. At time of broadcast communication of the binary mode, returning of data is not executed except for the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This is because there will be a risk that the returned data may be deformed.
E6581222 4.1.2. Data transmission formats used in binary mode A communication number is used to specify a data item, data is written in hexadecimal form, and data in transmission characters are represented by binary codes (HEX codes). ■ Computer → VF-S11 (binary mode) Omissible in one-to-one communications “/” (2FH) INV-NO 1 byte CMD 1 byte No data for the 52H (R) command Communication No. 2 bytes Checksum area DATA 2 bytes SUM 1 byte Not omissible 1.
E6581222 ■ VF-S11 → computer (binary mode) At time of broadcast communication of the binary mode, returning of data is not executed except for the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This is because there will be a risk that the returned data may be deformed. • Data returned when data is processed normally (Binary mode) Omissible “/” (2FH) INV-NO 1 byte CMD 1 byte Communication No. 2 bytes Checksum area DATA 2 bytes SUM 1 byte Not omissible 1.
E6581222 2) Error Processing (Binary mode) In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type number is returned to the computer in addition to the checksum. At time of broadcast communication of the binary mode, returning of data is not executed except for the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This is because there will be a risk that the returned data may be deformed.
E6581222 4.1.3. Transmission Format of Block Communication What is block communication? Data can be written in and read from several data groups set in one communication by setting the type of data desired for communication in the block communication parameters (, , to ) in advance. Block communications can save the communication time. Data is transmitted hexadecimal using the binary (HEX) code transmission characters.
E6581222 ■ Block Write 1, 2 Select data, which is desired to be written in block communications, in Block Communication Write Data 1 and 2 Parameters (, ). This parameter becomes effective when the system is reset, such as when power is turned off. When the setting is completed, turn off and then on the power. No.
E6581222 ■ VF-S11 → Computer At time of broadcast communication of the binary mode, returning of data is not executed except for the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This is because there will be a risk that the returned data may be deformed. 1) Normal processing Omissible Start Code “／” INV No.
E6581222 2) Error Processing (Binary mode) In case an error occurs, communication error command (4EH(N) or 6EH(n)) and the error type number is returned to the computer in addition to the checksum. At time of broadcast communication of the binary mode, returning of data is not executed except for the inverter to be returned (inverter number 00H) and when the inverter number is not matched. This is because there will be a risk that the returned data may be deformed.
E6581222 4.2. Commands Here are the communication commands available. Command Function R command Reads the data with the specified communication number. W command Writes the data with the specified communication number. (RAM and EEPROM). P command Writes the data with the specified communication number. (RAM). Reads the data with the specified communication number. (For binary mode only. G command Dummy data is required for this command.
E6581222 P (50H) (RAM*1 write) This command is used to rewrite data into the parameter specified using a communication number. It writes data into the RAM only. It cannot be used to write data into any read-only parameters. Each time an attempt to write data is made the inverter checks whether the data falls within the specified range. If this check reveals that the data falls outside the range, the inverter will reject it and return an error code. - Ex.
E6581222 S (53 H)/ s (73 H) Inter-drive communication command(RAM*1 Write) This command is for using frequency command values in % (1 = 0.01%), instead of in Hz, and is for synchronous-proportional operation in inter-drive communication. This command can also be used in ordinary computer link communications. When writing in the frequency command (FA01) is enabled and a parameter other than it is specified, a communication number error will result.
E6581222 4.3. Transmission errors ■ Table of error codes Error name Impossible to cute Description Error code exe- The command is impossible to execute, though communication was 0000 established normally. 1 Writing data into a parameter whose setting cannot be changed during operation (e.g., maximum frequency) *1 2 Writing data into a parameter while “” is in progress 3 The maintenance command is issued. *2 Data error Invalid data is specified.
E6581222 4.4. Broadcast communications function Broadcast communication function can transmit the command (write the data) to multiple inverters by one communication. Only the write (W, P) command is valid and the read (R, G) command is invalid. The inverters subject to the broadcast communication are the same to the independent communication; 0 to 99 (00H - 63H) in the ASCII mode, and 0 to 63 (00H - 3FH) in the binary mode. To avoid data deforming, the inverters to return data will be limited.
E6581222 • An example of system configuration (schematic diagram) A RS485 communication converter unit (RS4001Z, RS4002Z or RS4003Z) will be needed to control multiple inverters on the network. Host computer Block 2 Block 1 Inverter No. 10 VF-S11 Inverter No.11 VF-S11 Inverter No.19 VF-S11 Inverter No.20 Inverter No.21 VF-S11 VF-S11 Inverter No.29 VF-S11 *1 *1: Error signal I/F In broadcast communications, only the representative inverter in each block returns data to the host computer.
E6581222 4.5. Examples of the use of communication commands Here are some examples of the use of communications commands provided for the VF-S11 series of inverters. Inverter numbers and checksum used in ASCII mode are omitted from these examples. ■ Examples of communications - To run the motor in forward direction with the frequency set to 60 Hz from the computer Computer → Inverter (PFA011770)CR (PFA00C400)CR Inverter → Computer (PFA011770)CR …Set the operation frequency to 60 Hz. (60 / 0.
E6581222 4.6. Examples of RS232C communication programs Ex. 1: BASIC program for monitoring the operation frequency continuously (RS232C, ASCII mode) (Toshiba version of Advanced BASIC-86 Ver. 3.01.05J) ◊ Monitoring the operation frequency continuously 1) Examples of programs 10 OPEN "COM1:9600,E,8,1" AS #1 --- 9600 baud, even parity, 8-bit length, 1 stop bit 20 A$=”FE00” --- Specifies the communication number for monitoring the operation frequency.
E6581222 Ex. 2: BASIC program for executing an input command with checksum (RS232C, ASCII mode) (Toshiba version of Advanced BASIC-86 Ver. 3.01.05J) ◊ Checking if the maximum frequency setting has been changed correctly 1) Examples of programs 10 OPEN "COM1:9600,E,8,1" AS #1 --- 9600 baud, even parity, 8-bit length, 1 stop bit 20 INPUT"Send Data=";A$ --- Reads in data to be sent to the inverter. 30 S$="("+A$+"&" --- Adds “(“ and “&” to the read data in.
E6581222 Ex. 3 BASIC program for communication tests (RS232C, ASCII mode) (Toshiba version of Advanced BASIC-86 Ver. 3.01.05J) ◊ Accessing a parameter (with error code.) 1) Examples of programs 100 INPUT "Baud rate=9600/4800/2400/1200";SPEED$ ---- Selects a baud rate. 110 INPUT "Parity=even(E)/odd(O)";PARITY$ ---- Selects parity. 120 OPEN "COM1:"+SPEED$+","+PARITY$+",8,1"AS #1 130 INPUT "Send data";B$ ---- Enters a command.
E6581222 Ex. 4 A VisualBaisc program for the ASCII mode communication (VisualBaisc is the registered trademark of the U.S. microsoft company.) ◊ Accessing a parameter 1) Sample program executive example (Monitor of the output frequency (FD00)) Transmission and reception of the optional data like in the following example can be done by doing "the arrangement of the form control" of the explanation and "the description of the code" with mentioning later.
E6581222 3)The description of the code Private Sub Form_Load() Form1.Show '********************************************************************** ' Setting the labels (Initialization) '********************************************************************** Label1.Caption = "Data for transmission" Label2.Caption = "Received data" Command1.Caption = "Transmit" Command2.Caption = "Clear" Command3.
E6581222 5. MODBUS-RTU protocol The MODBUS-RTU protocol of VF-S11 supports only part of the MODBUS-RTU protocol. Only two commands are supported, “03: Multiple data read (limited only to two bytes)” and “06: Word writes.” All data will be binary codes. ■ Parameter Setting • Protocol Selection () Select “MODBUS－RTU protocol ( = ) in the communication selection parameters. “TOSHIBA Inverter Protocol” (=) is set for communication protocol selection in initial shipment setting. (See “3.
E6581222 ■ Data Exchange with Inverters The inverters are always ready to receive messages and perform slave operation in response to computer requests. A transmission error will result if the transmission format does not match. The inverters will not respond if a framing error, parity error, CRC error or an inverter number mismatch occurs. If no response is received, the computer side recognizes that a communication error has occurred. Transmit data again. (1) In case spacing for more than 3.
E6581222 5.1. MODBUS-RTU transmission format MODBUS-RTU sends and receives binary data without a frame-synchronizing start code and defines the blank time to recognize the start of a frame. MODBUS-RTU decides the data that is first received subsequently as the first byte of a frame after a blank time for 3.5 bytes at the on-going communication speed. 5.1.1. Read command (03) ■ Computer → VF-S11 *The text size is 8 bytes fixed. (3.5bytes Blank) Inverter No. Command Communication No.
E6581222 5.1.2. Write command (06) ■ Computer → VF-S11 *The text size is 8 bytes fixed. (3.5bytes Blank) Inverter No. 1) Inverter No. (1 byte) Communi- CommuniWrite Data Write Data Command cation No. cation No. (high) (low) (low) (high) 06 CRC (low) CRC (high) (3.5bytes Blank) : Specify an inverter number between 0 and 247 (00H to F7H). Command processing will be executed only broadcast communication “0” and with those inverters that match set inverter numbers.
E6581222 5.2. CRC Generation “CRC” is a system to check errors in communication frames during data transmission. CRC is composed of two bytes and has hexadecimal-bit binary values. CRC values are generated by the transmission side that adds CRC to messages. The receiving side regenerates CRC of received messages and compares generation results of CRC regeneration with CRC values actually received. If values do not match, data will be aborted.
E6581222 6. Inter-drive communication Inter-drive communication function enables manipulation of multiple inverters without using the host computer such as the PLC and the PC. This function is utilized for "speed proportional control". The command is instructed by the operation from the master inverter’s panel or analog input, etc. With the Inter-drive communication function, the master inverter continues to transmit the data selected by the parameters to all the slave inverters on the same network.
E6581222 ■ Setting of parameter ●Selection of communication protocol () Shipment setting: 0 (TOSHIBA Inverter Protocol) Protocol setting with all inverters (both master and slave inverters) engaged in inter-drive communications 0: Set the TOSHIBA Inverter Protocol. * Inter-drive communications are disabled when the MODBUS-RTU protocol is selected. * This parameter is validated after resetting the inverter or rebooting the power supply.
E6581222 ■ Relating communication parameters Following parameters should be set or changed if necessary. • Communication baud rate ()... Shipment setting = : 9600bps Baud rate of all inverters in the network (master and slave) should be same network. • Parity () ... Shipment setting = : Even parity Parity of all inverters in the network (master and slave) should be same network. • Communication error trip time() ...
E6581222 6.1. Speed proportional control Various inclinations can be set by frequency point setting. The frequency command value on the slave side during inter-drive communication can be expressed by the following formulas. If inter-drive communication is not selected (=), point conversion is not performed. Point conversion is performed only when the command “S” is received. (Ex.) < unit > Frequency unit: 1=0.01(Hz), point setting unit: 1=0.
E6581222 6.2. Transmission format for inter-drive communication Data type is handled in hexadecimal notation and the transmission characters are treated with the binary (HEX) code. The transmission format is basically the same to the case of binary mode. S command is used and the slave inverters do not return the data.
E6581222 7. Communications parameters The settings of communication-related parameters can be changed from the operation panel and the external controller (computer). Note that there are two types of parameters: parameters whose settings take effect immediately after the setting and parameters whose settings do not take effect until the inverter is turned back on or reset. Communication Number.
E6581222 7.1. Communication baud rate() , Parity bit() •Communication baud rate and parity bit should be uniform inside the same network. •This parameter is validated by resetting the power supply. 7.2. Inverter number() This parameter sets individual numbers with the inverters. Inverter numbers should not be duplicate inside the same network. Receiving data will be canceled if inverter numbers specified in individual communications and set by a parameter do not match.
E6581222 7.3. Timer function() This function detects any normal data that is not detected even once within an arbitrarily predetermined time. The timer function is used to detect breaks in cables during communications and to trip an inverter () if the inverter has received no data within the time specified using this function.
E6581222 7.4. Setting function of communication waiting time () Use this function for the following case: When the data response from the inverter is too quick after the PC had sent the data to the inverter, PC process cannot get ready to receive the data, or when the RS485/RS232C converter is used, changeover of sending and receiving data takes much time in the converter process. The case of " Inter-drive communication ", set up more than 0.
E6581222 8. Commands and monitoring from the computer Across the network, instructions (commands and frequency) can be sent to each inverter and the operating status of each inverter can be monitored. 8.1. Communication commands (commands from the computer) ■ Communication command (Communication number: FA00) Commands can be executed on inverter frequencies and operation stop through communications.
E6581222 Communication command2 (Communication Number : FA20) This command is enabled only when the communication command is enabled. Set Bit 15 of Communication Command 1 (communication Number: FA00) to “1” (enable). When enabling the communication command by Communication Command 1, commands by communications can be given the priority irrespective of the setting of the command mode selection parameter ().
E6581222 Communication command3 (Communication number: FA26) The RY Terminal Output Hold Command and OUT Terminal Output Hold Command are always enabled even though communication command priority is not set. Table 3 Data construction of Serial Communication Command 3 (FA26) Bit Function 0 1 Once it is turned on, a RY terminal 0 RY terminal output hold OFF holds that condition. Once it is turned on, an OUT ter1 OUT terminal output hold OFF minal holds that condition.
E6581222 8.2. Monitoring from the computer This section explains how to monitor the operating status of the inverter from the computer. Monitoring of the operation frequency from the computer (FE00, FD00) Operation frequency (frequency immediately before the occurrence of a trip): Communication Number FE00 (Minimum unit: 0.01 Hz) Operation frequency (current frequency): Communication Number FD00 (Minimum unit: 0.01 Hz) Ex.: Monitoring of operation frequency (during 50 Hz operation) ...
E6581222 Inverter operating status3 (FE42, FD42) Operating status 3(status immediately before the occurrence of a trip): Communication Number FE42 Operating status 3(current status): Communication Number FD42 Bit Function 0 (Reserved) 1 Electric Power Counting 0 1 − − Counting Resetting Remarks (FE76,FE77) status 2 (Reserved) − − 3 (Reserved) − − 4 (Reserved) − − 5 (Reserved) − − 6 (Reserved) − − 7 (Reserved) − − 8 Acceleration/deceleration 00:Acceleration/decelerat
E6581222 Inverter operating command mode status (FE45) The monitor of the command mode that the present condition is enabled Data Enabled command 0 Terminal board 1 Operation panel 2 Serial communication Inverter operating frequency mode status (FE46) The monitor of the frequency command mode that the present condition is enabled Note that Preset speed operation frequencies is given the priority independent of the frequency mode, in which case this monitor will be disabled, in case Preset speed
E6581222 Alarm information monitor (FC91) Bit Specifications 0 1 Remarks (Code displayed on the panel) 0 Over-current alarm Normal Alarming 1 Inverter overload alarm Normal Alarming flickering flickering 2 Motor overload alarm Normal Alarming flickering 3 Overheat alarm Normal Alarming flickering 4 Overvoltage alarm Normal Alarming flickering 5 Main circuit undervoltage alarm Normal Alarming - 6 (Reserved) - - - 7 Low current alarm Normal Ala
E6581222 Trip code monitor (current status: FC90: nerr oc1 oc2 oc3 ocl oca ephi epho op1 op2 op3 ol1 ol2 oh e eep1 eep2 eep3 err2 err3 err4 err5 err7 Data (hexadecimal number) 0 1 2 3 4 5 8 9 A B C D E 10 11 12 13 14 15 16 17 18 1A err8 uc up1 ot ef2 oc1p oc2p oc3p etyp oh2 sout e-18 e-19 e-20 e-21 etn1 1B 1D 1E 20 22 25 26 27 29 2E 2F 32 33 34 35 54 Code historic records: Data (decimal number) FE10 to FE13) Description 0 1 2 3 4 5 8 9 10 11 12 13 14 16 17 18 19 20 21 22 23 24 26 No error Over-
E6581222 Inverter model (capacity) code (FB05) Model VFS11-2002PM-AN VFS11-2004PM-AN VFS11-2007PM-AN VFS11-2015PM-AN VFS11-2022PM-AN VFS11-2037PM-AN VFS11-2055PM-AN VFS11-2075PM-AN VFS11S-2002PL-AN VFS11S-2004PL-AN VFS11S-2007PL-AN VFS11S-2015PL-AN VFS11S-2022PL-AN VFS11-4004PL-AN VFS11-4007PL-AN VFS11-4015PL-AN VFS11-4022PL-AN VFS11-4037PL-AN VFS11-4055PL-AN VFS11-4075PL-AN VFS11-4110PL-AN VFS11-4150PL-AN VFS11-2110PM-AN VFS11-2150PM-AN Data (hexadecimal number) 1 2 4 6 7 9 A B 19 1A 1C 1E 1F 22 24 26
E6581222 8.3. Control of input/output signals from communication The input terminals, output terminals, analog input and output signals of the inverters can be controlled by communications. Terminal Output Data (FA50) The output terminals on the inverters can be controlled directly by communications. Before controlling them, select Function Number 38 to 41 in Output Terminal Function Selection ( - , ,).
E6581222 Input terminal board status (FD06, FE06) Input terminal board status (status immediately before the occurrence of a trip): Communication Number FE06 Input terminal board status (current status): Communication Number FD06 In case “0: No assignment function” is selected in function selection, inverter operations will not be affected even when terminals are turned on and off. Therefore, the terminals can be used as input terminals for customer’s own use.
E6581222 Analog Input Monitors (FE35, FE36) Analog input value VIA monitor: “Communication Number FE35” Analog input value VIB monitor: “Communication Number FE36” Data: 10bit resolution (Data range 0 to 1023) These monitors can also be used as an A/D converter independent of inverter control. Setting except for “VIA” as the frequency setting mode will allow analog input (VIA) as an A/D converter independent of inverter control.
E6581222 8.4. Utilizing panel (LEDs and keys) by communication The VF-S11 can display data that is not related to the inverters through an external controller or other means. Input by key operations can also be executed. The use of inverter resources reduces the cost for the entire system. 8.4.1. LED setting by communication Desired LED information can be displayed by communication. Set the standard monitor display selection parameter to “communication LED setting (=).
E6581222 Block Communication Function for LED Display To display LED data for ASCII display that is synchronized to each digit, set data for each digit and validate this set data by display selection by communication (Communication Number FA65). Synchronization can also be achieved by batch writing LED data parameters after changing the following block communication mode parameters and by sending data by block communication.
E6581222 ■ ASCII LED display data code (00H-1FH are blank.) Hex Code Display Char. Hex Code Display Char. Hex Code 00H BLANK 20H BLANK SP 40H 01H BLANK 21H BLANK ! 02H BLANK 22H BLANK 03H BLANK 23H BLANK 04H BLANK 24H 05H BLANK 06H Display Display Char.
E6581222 8.4.2.Key utilization by communication The VF-S11 can use the panel keys on the inverters through external communications. This function is available with CPU version 1 (Communication Number: FE08) = 104 or higher. ■ Key Monitoring Procedure Set panel key selection (Communication Number: FA10) to “1” to set the external key mode.
E6581222 9.Parameter data Explanation of parameters for VF-S11 series is described here. For communication purposes, see the parameter list on inverter's instruction manual regarding the communication number, adjustment range and so forth. ■ Referring to the parameter list Minimum ComTitle munica- Function unit tion No.
E6581222 ■ Command parameters For those parameters that contain data only in the RAM and not in the EEPROM, their data return to initial values when the power is turned off, in failure resetting, or when standard shipment settings are set. Note that parameters without data storage in the EEPROMs will be written in the RAMs only even if the command W (writing in EEPROMs and RAMs) is executed. ■ Commands Communication Number.(HEX) FA00 NOTE : Data is expressed in decimal notation.
E6581222 ■ Monitor parameters * These parameters are read-only (monitor-only) parameters. Communication No.
E6581222 Appendix 1 Table of data codes • JIS (ASCII) codes Higher orde Lower order 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 NUL TC1(SOH) TC2(STX) TC3(ETX) TC4(EOT) TC5(ENQ) TC6(ACK) BEL FE0(BS) FE1(HT) FE2(LF) FE3(VT) FE4(FF) FE5(CR) SO SI 1 TC7(DLE) DC1 DC2 DC3 DC4 TC8(NAK) TC9(SYN) TC10(ETB) CAN EM SUB ESC IS4(FS) IS3(GS) IS2(RS) IS1(US) 2 3 4 5 6 7 (SP) ! ０ １ ２ ３ ４ ５ ６ ７ ８ ９ ： ； ＜ ＝ ＞ ？ ＠ Ａ Ｂ Ｃ Ｄ Ｅ Ｆ Ｇ Ｈ Ｉ Ｊ Ｋ Ｌ Ｍ Ｎ Ｏ Ｐ Ｑ Ｒ Ｓ Ｔ Ｕ Ｖ Ｗ Ｘ Ｙ Ｚ ［ ￥ ］ ＾ ＿ 、 ａ ｂ ｃ ｄ ｅ ｆ ｇ ｈ ｉ ｊ ｋ ｌ ｍ ｎ ｏ ｐ ｑ ｒ ｓ ｔ ｕ ｖ
E6581222 Appendix 2 Response time The communication response time can be calculated from data communication time and inverter processing time.
E6581222 Appendix 3 Compatibility with the communications function of the VF-S9 To provide consistency in communications procedures, the communications function of the VF-S11 series of inverters has been designed based on the protocols used for the Toshiba VF-S9 series of inverters. With regard to compatibility, however, VF-S9 users should check the items described below before using the communications function of their inverters.
E6581222 Appendix 4 Troubleshooting If a problem arises, diagnose it in accordance with the following table before making a service call. If the problem cannot be solved by any remedy described in the table or if no remedy to the problem is specified in the table, contact your Toshiba dealer. Problem Remedies Communications will not take place.
