DAIKIN_EKMBDXB7V1_IDU_COM_STATES

DAIKIN_EKMBDXB7V1_IDU_COM_STATES (FB)

FUNCTION_BLOCK DAIKIN_EKMBDXB7V1_IDU_COM_STATES

Representation

Short description

Recording the communication states of up to 64 Daikin indoor units\n\nTypical application: Central control of Daikin indoor units via the Daikin Modbus interface EKMBDXB7V1\\

Guidelines - Software creation

The following function codes ( FC ) are supported: 3, 4, 6 and 16 The following transfer rates are supported: 9600 and 19200 bit/s For addressing, use the address values, not the register addresses ( address = register - 1 ) The Modbus addresses 1 - 15 can be set directly on the DIP switches in the interface. In FC03 a maximum of 32 registers may be requested in one request telegram ( deviating from the Modbus standard ) In FC04 a maximum of 32 registers may be requested in one request telegram ( deviating from the Modbus standard ) In FC16 a maximum of 30 registers may be written in one request telegram ( deviating from the Modbus standard ) The following transmission parameters were tested: 19200 Baud, 8-N-1 The interface supports the following exception codes: 0x81, 0x82 and 0x83 The number of control commands per indoor unit is limited to 7000 / year !!! Considering the tested transmission parameters, the time interval between the end of the response and the next request telegram must be at least 22.5 ms All registers read with FC04 are always available up to date All registers read with FC03 are available up to date only once during each restart of the gateway &#xNAN;************** &#xNAN;* Functions * &#xNAN;************** This FB records and evaluates the messages ‘Connected’ and ‘Communication error’ of all up to 64 indoor units.\nThe current states are available in the arrays ‘arxIndoorUnits_ConState’ (state ‘Connected’), ‘arxIndoorUnits_ComState’ (state ‘Communication error’)\nand ‘arxIndoorUnits_ReadWriteState’ (write and read permission) separately for each indoor unit.\n\\

InOut:

Scope	Name	Type	Initial	Comment
Input	xEn	BOOL	TRUE	Enable / disable of communication ( TRUE = enabled )
Input	byUnitId	BYTE	0	Device address ( interface ) ( 1 .. 15 )
Input	xUpdateStates	BOOL	FALSE	Updating of states (on every rising edge )
Input	xResError	BOOL	FALSE	Reinitialization of the output 'eErrorCodeCom' ( on each rising edge )
Inout	ModbusClient	ModbusClientBase		Client of the device
Output	xInterfaceState	BOOL	FALSE	State of the interface
Output	xOtherDIIIUnitPresent	BOOL	FALSE	Information whether another DIII unit (in addition to\nthis interface) is present
Output	arxIndoorUnits_ConState	ARRAY [1..4, 0..15] OF BOOL		FALSE: No\nTRUE: Yes (default value)\nArray with the connection states of the indoor units of all groups (1-00 … 4-15)\n1st dimension: group, 2nd dimension: indoor unit number\nArray element = FALSE: no connection to the indoor unit\nArray element = TRUE: connection to the indoor unit
Output	arxIndoorUnits_ComState	ARRAY [1..4, 0..15] OF BOOL		Array with the communication states of the indoor units of all groups (1-00 … 4-15)\n1st dimension: group, 2nd dimension: indoor unit number\nArray element = FALSE: without communication error\nArray element = TRUE: with communication error
Output	arxIndoorUnits_ReadWriteState	ARRAY [1..4, 0..15] OF BOOL		Array with the read / write permissions of the indoor units of all groups ( 1-00 … 4-15 ) 1st dimension: group, 2nd dimension: indoor unit number Array element = FALSE: no read / write permission Array element = TRUE: read / write permission
Output	xAlarm	BOOL	FALSE	Collective fault ( TRUE = Fault )
Output	xAlarmCom	BOOL	FALSE	Collective fault - communication ( TRUE = Fault )
Output	eErrorCodeCom	ModbusErrorCode		Error code - communication ( 0 = no error )
Output	xBusy	BOOL		Communication indicator ( TRUE = Communication )
Input Const	tTimeUpdateStates	TIME	TIME#3s0ms	Update interval for the operations influenced by the input ‘xUpdateStates’