Danfoss VLT HVAC Drive FC 100 Series Design Manual

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Danfoss VLT HVAC Drive FC 100 Series Design Manual Manual pdf 143 page image

Parameter commands master ⇒ slaveBit no. Parameter command15 14 13 120 0 0 0 No command0 0 0 1 Read parameter value0 0 1 0 Write parameter value in RAM (word)0 0 1 1 Write parameter value in RAM (double word)1 1 0 1 Write parameter value in RAM and EEPROM (double word)1 1 1 0 Write parameter value in RAM and EEPROM (word)1 1 1 1 Read/write textTable 7.4Response slave ⇒masterBit no. Response15 14 13 120 0 0 0 No response0 0 0 1 Parameter value transferred (word)0 0 1 0 Parameter value transferred (double word)0 1 1 1 Command cannot be performed1 1 1 1 text transferredTable 7.5If the command cannot be performed, the slave sends this response:0111 Command cannot be performed- and issues the following fault report in the parameter value (PWE):PWE low (Hex) Fault Report0 The parameter number used does not exit.1 There is no write access to the defined parameter2 Data value exceeds the parameter's limits3 The sub index used does not exit.4 The parameter is not the array type.5 The data type does not match the defined parameter11 Data change in the defined parameter is not possible in the adjustable frequency drive's present mode.Certain parameters can only be changed when the motor is turned off82 There is no bus access to the defined parameter83 Data change is not possible because the factory set-up is selected.Table 7.67.4.8 Parameter Number (PNU)Bits no. 0-11 transfer parameter numbers. The function ofthe relevant parameter is defined in the parameterdescription in .7.4.9 Index (IND)The index is used together with the parameter number toread/write-access parameters with an index, e.g.,15-30 Alarm Log: Error Code. The index consists of 2 bytes,a low byte and a high byte.Only the low byte is used as an index.RS-485 Installation and Set... VLT® HVAC Drive Design GuideMG11BB22 - VLT® is a registered Danfoss trademark 7-77 7