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6.10 Communication function parameters

F163 Setting range Unit Ex-factory value Alteration
Communication address 0-250 1 1 X

When RS-485 communication port control is set for the inverter, the position of each inverter shall be set via a parameter.

0: No communication function 
01-250: Position of inverter
F164 Setting range Unit Ex-factory value Alteration
Communication transmission speed 0-3 1 2 X 
0:4800 bit/s 1:9600 bit/s 2:19200 bit/s 3:38400 bit/s
F165 Setting range Unit Ex-factory value Alteration
Communication data mode 0-5 1 3 X 
0: 8N1 For ASCII 1: 8E1 For ASCII 2: 8O1 For ASCII
3: 8N1 For RTU 4: 8E1 For RTU 5: 8O1 For RTU

example:

1. 8N1 For ASCII F165=0 or 8N1 For RTU F165=3<br>
2. 8E1 For ASCII F165=1 or 8E1 For RTU F165=4<br>
3. 8O1 For ASCII F165=2 or 8O1 For RTU F165=5
F166-F168 Reserved
F169 Setting range Unit Ex-factory value Alteration
Given decimal point of communication frequency 0: Communication 0201H egister adopts 1 bit decimal
1: Communication 0201H register adopts 2 bit decimal		 1 0 X

F169 sets the decimal point position of the given communication frequency (0201h register)

Summary

(1) D100 series converters support RTU mode in standard Modbus protocol.

RTU mode: Each 8bit data is composed of two hexadecimal characters of 4bit, for example: 64H (hex).

RTU Mode
Start bit 3.5 bits
Slave address 1 bit
Modbus function NO. 1 bit
Data n bit
CHECK CRC16（2 bit）
End bit 3.5 bits

Inverter parameters communication address indicate hexadecimal system, for example communication address of F100 is 0064H. Communication specific variables: including communication specific instruction variables and communication specific state variables, address starting from 0200H. Save of communication variables: rewrite inverter parameters (for example F100) to be stored in EEPROM.Still save after power failure. But parameters cannot be rewritten frequently, otherwise EEPROM memory may be damaged. Rewriting communication-specific variables (variables after 0200H) only modifies values in RAM. Do not save after power failure, it allow rewriting frequently. Data Types in Communication: because of data is hexadecimal integer, the smallest unit can be seen from the decimal point position of the parameters in the function table. For example, the minimum unit of F003 is 0.1Hz. Therefore, according to Modbus protocol, communication transmission 300 represents 30.0Hz. Rewritten, of F013 and F172 parameters can only by 06H function, not support by 10H function, and there is no response frame.

Supported Modbus Function

Parameter Function Specification
01H Read parameter address status Read from 1 to 32
03H Read holding register Read from 1~20. Read all parameters,communication-specific variables
04H Read input register Read from 1~20.
05H Write single parameter address Write data FF00H，parameter address ON；write 0000H，parameter address OFF
06H Write single holding register All parameters and communication-specific variables can be rewritten
0FH Write multiple parameter address Write from 1~32. parameter address start from 0048H
10H Write multiple holding registers Rewritten from 1~20. All parameters and communication-specific variables can be rewritten

(1) Communication Address table

1. parameter address address table

Modbus mode include：01H (read parameter address status), 05H (write single parameter address), 0FH (write multiple parameter address)

parameter address Name R/W Specification
0000 Operation R 0–Stop 1–Operating
0001 JOG R 0–Invalid 1–JOG
0002 Forward/reverse R 0–Forward 1–Reverse
0003 In operation R 0–Stop 1–In operation
0004 In jogging R 0–Invalid 1–In jogging
0005 In forward/reverse rotation R 0–In forward rotation 1–In reverse rotation
0006 In braking R 0–Invalid 1–In braking
0007 Frequency tracking R 0–Invalid 1–Frequency tracking
0008-0047 reserved
0048 Operation W 0000—Invalid FF00（or 100， bit8 set 1-Valid
0049 Forward W 0000—Invalid FF00-Valid
004A Reverse W 0000—Invalid FF00-Valid
004B Stop W 0000—Invalid FF00-Valid
004C Forward/reverse switch W 0000—Invalid FF00-Valid
004D JOG W 0000—Invalid FF00-Valid
004E JOG Forward W 0000—Invalid FF00-Valid
004F JOG Reverse W 0000—Invalid FF00-Valid

2. Input register address table

All address only read. Modbus function include 04H (read input register).

Fault Code table:

Address Name
0000 Output frequency
0001 Set frequency
0002 Output current
0003 Output speed
0004 DC voltage
0005 AC voltage
0006 temperature
0007 Counter
0008 PID target value
0009 PID feedback value
000A Current fault
000B Total operating hours
000C Output power
000D X terminal state
Decimal Fault code
64 E.OCS
80 E.oUS
88 E.LuS
92 E.oHS
96 E.oLS
100 E.oAS
104 E.oTS

Note 1: The BIT0-BIT5 in X terminal state corresponds to the X1-X6 terminal , and 1 means terminal is closed.
Note 2: The fault code suffixes S, A, d and n are four consecutive numbers, such as 65 for E.OC.A.

3. Holding register address table

Modbus functions include: 03H (read and hold register), 06H (write a single hold register), 10H (write multiple hold registers)

Definition Address Specification
Internal parameters 0000H～00FFH Inverter parameter address，F000～F255
Communication Specific Instruction Variable 0200H Main control bit，BIT0-BIT7 mapping parameter address 0048H～004FH，BIT8 virtual input terminal enable
Communication Specific Instruction Variable 0201H Given frequency，given frequency address when F002=2
Communication Specific Instruction Variable 0202H Virtual input terminal1，BIT0-BIT15 corresponding digital input terminal function 01-16. Digital input terminal function 1-8 already exists in the main control bit, the modification here is invalid.
Communication Specific Instruction Variable 0203H Virtual input terminal 2, BIT0-BIT15 corresponding digital input terminal function 17-32
Communication Specific Instruction Variable 0204H EDO，Communication control digital output terminal, BIT3 corresponding (FA, FB, FC) relay terminal
Communication Specific Instruction Variable 0205H EAO，Communication control analog output terminal AO
Communication Specific Instruction Variable 0206H～020FH Reserved
Communication-specific state variables, read-only 0210H Main control bit，BIT0～BIT15 mapping parameter address 0000H～000FH
Communication-specific state variables, read-only 0211H Digital terminal status，BIT0-BIT5 corresponding X1-X6 , BIT11 corresponding (FA, FB, FC) relay
Communication-specific state variables, read-only 0212H Virtual Output State 1, BIT0-BIT15 corresponding to Digital Output Terminal Function 01～16.
Communication-specific state variables, read-only 0213H Virtual output state 2, BIT0-BIT15 corresponds to digital output terminal function 17-32.
Communication-specific state variables, read-only 0214H-021FH Reserved
Communication-specific state variables, read-only 0220H～022DH Mapping input registers (addresses 0000H-000DH)
Communication-specific state variables, read-only 022EH AI1. Analog input value 1（0～100.00%）
Communication-specific state variables, read-only 022FH AI2. Analog input value 2（0～100.00%）
Communication-specific state variables, read-only 0230H PFI. Pulse input value
Communication-specific state variables, read-only 0231H～023FH Reserved

(1) For example

  1. Setting No.01 inverter given frequency is 300.0Hz, Application Function Code 06H. Given frequency is communication port (F002=2)

    Master command message：

    RTU Mode
    Mute interval
    Slave address 01H
    Modbus function NO. 06H
    High bit of register address 02H
    Low bit of register address 01H
    High bit of written data 0BH
    Low bit of written data B8H
    Check DEH (CRC low bit)
    F0H (CRC high bit)
    END Mute

    Slave response: frequency is set to 300.0Hz, returns the same data as the master requests.

    Note 1: When F002 = 2, use 06H or 10H function to rewrite frequency, address is 0201H, EPROM is not operated at this time. If the rewriting frequency is to be written to EEPROM, the F003 value needs to be rewritten.

    Note 2: Calculations of check bits RTU mode adopts CRC method. The C language code of CRC16 is as follows：

    unsigned char data // Indicators of information buffer
unsigned char length //Number of bytes in the information buffer
unsigned int crc_chk(unsigned char data,unsigned char length)
{
    int j;
    unsigned int reg_crc=0xffff;
    while(length--)
    {
        reg_crc^=*data++;
        for(j=0;j<8;j++)
        {
            if(reg_crc&0x01)
                reg_crc=(reg_crc>>1)^0xa001;
            else
                reg_crc=reg_crc>>1;
        }
    }
    return reg_crc;
}

  2. Make No. 01 inverter run, function code 05H or 06H. Requirement control mode is communication port (F001=2). 0FH and 10H can also achieve this function as multi-write modes.

    See the following examples for their formats. Master command message：

    Write parameter address Write hold register
    Slave address 01H 01H
    Modbus function number 05H 06H
    High bit of parameter address/register address 00H 02H
    Low bit of parameter address/register address 48H 00H
    High bit of write data FFH 00H
    Low bit of write data 00H 01H
    CRC —— ——

    Slave response: inverter is forward operation and returns the same data as the master requests.

  3. Read 01 slave running status, function code 01H or 03H.

    Master command message：

    Read parameter address Read hold register
    Slave address 01H 01H
    Modbus function number 01H 03H
    High bit of parameter address/register start address 00H 02H
    Low bit of parameter address/register start address 00H 10H
    Read parameter address/register quantity (high bit) 00H 00H
    Read parameter address/register quantity (low bit) 08H 01H
    CRC —— ——

    Slave response: 09H to 00001001B，comparing with the parameter address table, it indicates that inverter on command and operating.

    Read parameter address Read hold register
    Slave address 01H 01H
    Modbus function number 01H 03H
    Byte number 01H 02H
    Read data 09H 00H
    09H
    CRC —— ——

  4. Read the operating frequency and setting frequency of No. 01 inverter, function code 04H or 03H.

    Master command message:

    Read input register Read hold register
    Slave address 01H 01H
    Modbus function number 04H 03H
    High bit of input/hold register start address 00H 02H
    Low bit of input/hold register start address 00H 20H
    Read byte number(high bit) 00H 00H
    Read byte number(low bit) 02H 02H
    CRC —— ——

    Slave response: The return content indicates that the current frequency of inverter is 0.0Hz and the set frequency is 50.0Hz.

    Read input register Read hold register
    Slave address 01H 01H
    Modbus function number 04H 03H
    Return byte number 04H 04H
    High bit of first register content 00H 00H
    Low bit of first register content 00H 00H
    High bit of second register content 01H 01H
    Low bit of second register content F4H F4H
    CRC —— ——

  5. Write 20.0s for F014, 15.0s for F015 and 10H for function code.

    Master command message:
    Slave address 01H
    Modbus function number 10H
    Start address (high bit) 00H
    Start address (low bit) 0EH
    Register number(high bit) 00H
    Register number(low bit) 02H
    Byte number 04H
    High bit of first number 00H
    Low bit of first register content C8H
    High bit of second register content 00H
    High bit of second register content 96H
    CRC ——

    Slave response:
    Slave address 01H
    Modbus function number 10H
    Start address (high bit) 00H
    Start address (low bit) 0EH
    Register number(high bit) 00H
    Register number(low bit) 02H
    CRC ——

    Abnormal response frame: When the slave station cannot complete the request sent by the master station, the abnormal response frame is returned. The frame format is as follows:

    • 1 bit

    • 1 bit（Modbus function number+80H）

    • 1 bit:

      • 01：Modbus function number that cannot be processed
      • 02：Unreasonable data address
      • 03：Out-of-range data values
      • 04：Operation failure (write read-only parameters, change

      parameters that cannot be changed during operation, etc.)

    • ——

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