Danfoss VLT HVAC Basic Drive FC 100 Series Design Manual

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Danfoss VLT HVAC Basic Drive FC 100 Series Design Manual Manual pdf 78 page image

Field Name Example (HEX)Slave Address 01Function 06Register Address HI 03 (Register address 999)Register Address LO E7 (Register address 999)Preset Data HI 00Preset Data LO 01Error Check (CRC) -ResponseResponse The normal response is an echo of the query,returned after the register contents have been passed.Field Name Example (HEX)Slave Address 01Function 06Register Address HI 03Register Address LO E7Preset Data HI 00Preset Data LO 01Error Check (CRC) -7.10.6 Preset Multiple Registers (10 HEX)DescriptionThis function presets values into a sequence of holdingregisters.QueryThe query message specifies the register references to bepreset. Register addresses start at zero, i.e. register 1 isaddressed as 0. Example of a request to preset tworegisters (set 1-24 Motor Current to 738 (7.38 A)):Field Name Example (HEX)Slave Address 01Function 10Starting Address HI 04Starting Address LO 19No. of Registers HI 00No. of registers LO 02Byte Count 04Write Data HI(Register 4: 1049)00Write Data LO(Register 4: 1049)00Write Data HI(Register 4: 1050)02Write Data LO(Register 4: 1050)E2Error Check (CRC) -ResponseThe normal response returns the slave address, functioncode, starting address, and quantity of registers preset.Field Name Example (HEX)Slave Address 01Function 10Starting Address HI 04Starting Address LO 19No. of Registers HI 00No. of registers LO 02Error Check (CRC) -7.11 Danfoss FC Control Profile7.11.1 Control Word According to FCProfile (8-30 Protocol = FC profile)Speed ref.CTWMaster-slave130BA274.1015 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0Bitno.:Bit Bit value = 0 Bit value = 100 Reference value external selection lsb01 Reference value external selection msb02 DC brake Ramp03 Coasting No coasting04 Quick stop Ramp05 Hold outputfrequencyuse ramp06 Ramp stop Start07 No function Reset08 No function Jog09 Ramp 1 Ramp 210 Data invalid Data valid11 Relay 01 open Relay 01 active12 Relay 02 open Relay 02 active13 Parameter set-up selection lsb15 No function ReverseExplanation of the Control BitsBits 00/01Bits 00 and 01 are used to choose between the fourreference values, which are pre-programmed in 3-10 PresetReference according to the following table:RS-485 Installation and Set... VLT HVAC Basic Drive Design GuideMG.18.C2.02 - VLT® is a registered Danfoss trademark 777 7