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APPLICATIONNOTEAN‐BEI‐E2‐038 Date:15/02/12

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AN‐BEI‐E2‐038ModbusRTUControlandRegisterMapping

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BFIApplicationsSupportLibrary

ApplicationNote AN‐BEI‐E2‐038

Title ModbusRTUControlandRegisterMapping

RelatedProducts BeijerFrequencyInverterE2

Level

3

1–Fundamental‐Nopreviousexperiencenecessary

2–Basic–SomeBasicdrivesknowledgerecommended

3–Advanced–SomeBasicdrivesknowledgerequired

4–Expert–Goodexperienceintopicofsubjectmatterrecommended

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Overview:

Beijer Frequency Inverter E2 drives support Modbus RTUcommunications, allowing a network of drives to be controlled and 

monitoredbyanyModbusRTUcapablePLCorcontrolsystem.TheBeijerFrequencyInverterE2isalwaysaSlavetoanexternal

ModbusRTUMaster.Thisdocumentdescribestheregistersandfunctionsavailable.

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ModbusRTUProtocolSpecification:

Protocol ModbusRTU

Errorcheck CRC

Baudrate 9600bps,19200bps,38400bps,57600bps,115200bps(default)

Dataformat 1startbit,8databits,1stopbits,noparity.

Physicalsignal RS485(2‐wire)

Userinterface RJ11

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ModbusTelegramStructure:

ThefollowingModbusCommandsaresupported

• 03ReadHoldingRegisters

• 06WriteSingleHoldingRegister

commands.Thetelegramstructureisasfollows:‐

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Command03–ReadHoldingRegisters Command06– WriteSingleHoldingRegister

MasterTelegram Length  SlaveResponse Length MasterTelegram Length  SlaveResponse Length

SlaveAddress 1 Byte  SlaveAddress 1 Byte SlaveAddress 1 Byte  SlaveAddress 1 Byte

FunctionCode(03) 1 Byte  StartingAddress 1 Byte FunctionCode(06) 1 Byte  FunctionCode(06) 1 Byte

RegisterAddress 2 Bytes  1

No.OfRegisters 2 Bytes  2

CRCChecksum 2 Bytes  Etc... CRCChecksum 2 BytesCRCChecksum 2 Bytes

 CRCChecksum 2 Bytes 

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Summary of content (11 pages)

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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 BFI Applications Support Library Application Note AN‐BEI‐E2‐038 Title Modbus RTU Control and Register Mapping Related Products Beijer Frequency Inverter E2 1 – Fundamental ‐ No previous experience necessary Level 3 2 – Basic – Some Basic drives knowledge recommended 3 – Advanced – Some Basic drives knowledge required 4 – Expert – Good experience in topic of subject matter recommended Overview: Beijer Frequency Inverter E2 drives support Modbus RTU communica
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 RJ45 Data Connection Pin Configuration: No Connection No Connection 0 Volt Int bus / Remote Keypad / PC Connection ‐ Int bus / Remote Keypad / PC Connection + +24 Volt Remote Keypad Power Supply RS 485‐ Modbus RTU RS 485+ Modbus RTU Data Format is Fixed at: 1 start bit, 8 data bits 1 Stop bit, No parity Baud rate and address set in P‐36 Typical MODBUS configuration: AN‐BEI‐E2‐038 Modbus RTU Control and Register Mapping 2
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Memory Map: Table 1: Control and status registers Note : All registers are Holding Registers Register Number 1* 2* 3* 4* Parameter Number ‐ ‐ ‐ ‐ 5 6* 7* 8* 9* 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 to 30 ‐ ‐ ‐ ‐ ‐ ‐ P00‐04 P00‐20 P00‐20 P00‐20 P00‐18 P00‐18 P00‐20 ‐ ‐ P00‐01 P00‐02 P00‐03 P00‐08 P00‐09 ‐ Upper byte Lower Byte Format Min Max Command Type Scaling 0 0 ‐ 0 15 5000 ‐ 60000 03,06 03,06 03,06 03,06 R/W R/W R/W R/W See Below
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Control and Status Register Descriptions: Read and write registers Register 1: Drive command 15 14 13 12 11 High byte 10 9 8 7 6 5 4 3 Low byte 2 1 0 Bit 0: Run/Stop command: Set to 1 to enable the drive. Set to 0 to stop the drive. Bit 1: Fast stop request. Set to 1 to enable drive to stop with 2nd deceleration ramp. Bit 2: Reset request. Set to 1 in order to reset the drive if drive is under trip condition.
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Register 12: Rating ID This register gives the following information: Drive size, drive type, Power units and Power value decimal places Register value (16 bits HEX format): X X X X h Power Units Drive Type Power Decimal Places Drive Frame Size 0 1 4 0 1 2 1 2 3 kW HP E2 No Decimal Places One Decimal Place Two Decimal Places Frame Size 1 Frame Size 2 Frame Size 3 NOTE : Power decimal places is used for register 13 (Power rating).
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Table 2: Parameter registers All user adjustable parameters within the drive are accessible by Modbus, and can be Read or Written to. For further information regarding the parameter functions and specific settings, please refer to the User Guide.
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APPLICATION NOTE AN‐BEI‐E2‐038 Register Parameter Description Date: 15/02/12 Format Min 1 Max 6 U16 U16 0 0 0 8 9999 1 U16 U16 U16 U16 U16 U16 U16 U16 U16 ‐5000 0 1 0 0 0 0 0 0 5000 6000 300 300 1 1 1000 3 5 Data format 1 = Optibus fixed baudrate 2 = 9K6 3 = 19K2 4 = 38K4 5 = 57K6 6 = 115K2 See user guide for more information Baudrate select 165 37 Trip time setup Access code definition 166 38 Parameter lock 167 168 169 170 171 172 173 174 39 40 41 42 43 44 45 46 Analog input offset Di
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Modbus Exception Response Telegrams Under some circumstances, the drive may reply with an Exception Response (error) in response to a request telegram sent from the network master, for example where the master tries to read a register which does not exist. Exception Responses which can be generated by the drive are listed below:‐ Exception Code 1: Invalid Request Returned under the following conditions • Network Master sends an unsupported Modbus command (e.g.
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Analog and Digital Input Configurations when in MODBUS control mode (P12 = 3 or 4) By changing the value in P‐15 adjusts the functionality of the control terminals as below: P‐15 Digital input 1 (T2) Digital input 2 (T3) Digital input 3 (T4) Analog input (T6) 0..2, 4..5, 8..
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Appendix A ‐ Register Changes for Single Phase Output Drives The Beijer Frequency Inverter E2 Single Phase Output drive has some registers that are different to the stand Beijer Frequency Inverter E2, for this reason the Registers/Parameters are listed below: Adr 134 148 149 150 151 160 161 Par 06 20 21 22 23 32 33 Description Reserved Preset speed 1 Preset speed 2 Preset speed 3 Preset speed 4 Boost Frequency Boost Period Duration Appendix B – Drive Fault
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APPLICATION NOTE AN‐BEI‐E2‐038 Date: 15/02/12 Appendix: Revision History Version Comments 1.00 First Release 1.