Function blocks

General about KNX_Read_DPT_xx

The usage of all KNX_Read_DPT_xx function blocks follows a similar pattern:

1. Configure group address:

   • Set byAdrMainGroup (0-31)

   • Set byAdrMiddleGroup (0-7)

   • Set byAdrGroup (0-255)

2. Select DPT format:

   • Select the desired format via eDPT_Format

3. Configure read behavior:

   • For cyclic reading: Set tRequestTime to the desired interval

   • For event-based reading: Use xRequest or xRequestVisu if necessary

4. Configure initialization:

   • Set eInitOption on InitOption.PollingOnStartUp or InitOption.InitValue

   • When InitOption.InitValue: Set the corresponding initial value:

     • DPT_13x: diInitValue

     • DPT_14x: rInitValue

     • DPT_19x: dtInitValue (not effective)

5. Monitor outputs:

   • Check tNextRequest for the time of the next read operation

   • Monitor the corresponding value outputs:

     • DPT_13x: diValue, rValue

     • DPT_14x: rValue

     • DPT_19x: wYear, wMonth, wDayOfMonth, wDayOfWeek, wHourOfDay, wMinutes, wSeconds

   • For DPT_13x and DPT_14x: Note sUnit for the unit

6. Error handling:

   • Monitor the error outputs of the parent SlaveBasic block

General about KNX_Write_DPT_xx

The usage of all KNX_Write_DPT_xx function blocks follows a similar pattern:

1. Configure group address:

   • Set byAdrMainGroup (0-31)

   • Set byAdrMiddleGroup (0-7)

   • Set byAdrGroup (0-255)

2. Select DPT format:

   • Select the desired format via eDPT_Format

3. Set transmit value:

   • Set the value to send at the corresponding input:

     • DPT_1x: xValue (BOOL)

     • DPT_2x: xValue (BOOL) and xPrio (BOOL)

     • DPT_6x: iValue (INT)

     • DPT_9x: rValue (REAL)

     • DPT_13x: diValue (DINT)

     • DPT_14x: rValue (REAL)

4. Configure send behavior:

   • For cyclic sending: Set tTimeUpdateSetp to the desired interval

   • For event-based sending: Set xUpdateSetp or xWriteVisu if necessary

   • Optional: Adjust tPauseTimeUntilNextSend to configure the send pause

5. Monitor outputs:

   • Check tNextWrite for the time of the next send operation

   • Monitor the corresponding *LastBusValueoutput for the last received value

   • For DPT_1x: Also note Encoding for the textual representation

   • For DPT_2x: Also note xControlBit for the priority status

6. Consider unit:

   • For DPT_6x, DPT_9x, DPT_13x, DPT_14x: Check sUnit for the current unit

7. Error handling:

   • Monitor the error outputs of the parent SlaveBasicWr block