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Weinzierl Engineering GmbH 
Achatz 3 
DE-84508 Burgkirchen / Alz 
GERMANY 

Tel: +49 (0)8677 / 91 636 

– 0 

[email protected] 
www.weinzierl.de 

 

© 2020 Weinzierl Engineering GmbH 

Page 1/49 

KNX Modbus Gateway with 250 data points

 

KNX Modbus RTU Gateway 886 

Operation and installation manual 

 

(Art. # 5256) 

Summary of Contents for 5256

Page 1: ... 84508 Burgkirchen Alz GERMANY Tel 49 0 8677 91 636 0 info weinzierl de www weinzierl de 2020 Weinzierl Engineering GmbH Page 1 49 KNX Modbus Gateway with 250 data points KNX Modbus RTU Gateway 886 Operation and installation manual Art 5256 ...

Page 2: ... Datapoints N M 12 5 5 Channel function DPT 01 binary 1 bit 16 5 6 Channel function DPT 03 dimming 4 bit 20 5 7 Channel function DPT 05 percent 1 byte 24 5 8 Channel function DPT 05 configured 1 byte 25 5 9 Channel function DPT 05 unsigned 1 byte 32 5 10 Channel function DPT 06 signed 1 byte 33 5 11 Channel function DPT 07 configured 2 bytes 34 5 12 Channel function DPT 07 unsigned 2 bytes 41 5 13...

Page 3: ...nd three LEDs enable a local operation and a visualization of the device status 2 Installation and connection The KNX Modbus RTU Gateway 886 is designed for installation on a DIN rail 35 mm with a width of 1 unit 18 mm An installation friendly design with pluggable screw terminals helps to reduce the cost of commissioning It features the following controls and displays KNX bus connector Programmin...

Page 4: ...y pressing the button KNX for a long time This is indicated by the LED Mode lighting up in orange Pressing the button RTU for a long time triggers the synchronization of the Modbus registers This is indicated by the LED Mode lighting up in orange The LED KNX is used to indicate the status of KNX communication It flashes when sending and receiving telegrams The LED RTU indicates the status of the M...

Page 5: ...X Bus connector to the device Keep the KNX programming button pressed for at least another 6 seconds A short flashing of all LEDs visualizes the successful reset of the device to factory default settings In the factory default settings the device has the physical address 15 15 255 and no group addresses are connected 4 Wiring scheme 4 1 Pluggable screw terminals The upper terminal is used to conne...

Page 6: ...ines before the input of the last device Only shielded and twisted cables should be used for Modbus Connection Icon Description 1 Ground connection for supply voltage 2 Ground connection for supply voltage 3 Positive connection for supply voltage 12 24 V 4 Ground connection for Modbus connected to connection 1 and connection 2 5 A Data line A for Modbus 6 B Data line B for Modbus KNX Positive conn...

Page 7: ... database The ETS5 database for ETS 5 7 or newer can be downloaded from the product website of the KNX Modbus RTU Gateway 886 www weinzierl de or from the ETS online catalogue 5 1 Description The first page shows general information about the device ...

Page 8: ... front without opening the switchboard cover The programming mode can be activated and deactivated via pressing simultaneously both buttons and This feature can be enabled and disabled via the parameter Prog mode on device front The recessed programming button next to the programming LED is always enabled and is not affected by this parameter Manual operation sync on device This parameter is used ...

Page 9: ...n With this parameter the telegram rate limitation can be activated or deactivated Time telegram rate If telegram rate limitation is activated the time between the telegrams can be configured here Times between 0 1 sec and 1 0 sec can be selected The telegram rate limitation only occurs when the bus load is increased 5 3 Modbus settings KNX Gateway This parameter defines the role of the KNX gatewa...

Page 10: ...ication The following are available 1200 bits s 2400 bits s 4800 bits s 9600 bits s 19200 bits s 38400 bits s 56000 bits s 115200 bits s Parity Here the Modbus frame is parameterized with regard to parity and stop bit The following options are available Even 1 stop bit Odd 1 stop bit None 2 stop bits None 1 stop bit Byte order Defines the order for the transmission of 2 byte values MSB first high ...

Page 11: ...2 MB to KNX Read holding register Address 1 Channel 3 MB to KNX Read holding register Address 2 Channel 4 MB to KNX Read holding register Address 2 Channel 5 MB to KNX Read holding register Address 3 Channel 6 MB to KNX Read holding register Address 4 Channel 7 MB to KNX Read holding register Address 4 The result is a read multi holding register request for addresses 0 4 Diagnostic objects Activat...

Page 12: ...ther slave address is to be used for the configured channels on this page Slave address only in master mode Here the slave address 0 247 of the channels of this page is set Slave description only in master mode If the diagnostic is activated the diagnostic object of this page can be named here Group object Type KNX Size Direction GO 251 Diagnostic Slave page 1 No communication 1 001 1 bit To KNX ...

Page 13: ... 1 Percent 1 byte 5 001 1 byte DPT 05 configured 1 byte Group object Type KNX Size Direction GO 1 Channel 1 Configured 1 byte 5 010 1 byte DPT 05 unsigned 1 byte Group object Type KNX Size Direction GO 1 Channel 1 Unsigned 1 byte 5 010 1 byte DPT 06 signed 1 byte Group object Type KNX Size Direction GO 1 Channel 1 Signed 1 byte 6 010 1 byte DPT 07 configured 2 bytes Group object Type KNX Size Dire...

Page 14: ...nication direction is set here KNX to Modbus group object is input Group object Type KNX Size Direction GO 1 Channel 1 Input Depending on DPT From KNX Modbus to KNX group object is output Group object Type KNX Size Direction GO 1 Channel 1 Output Depending on DPT To KNX Send condition If the group object is defined as an output the time at which the object sends the value to the KNX bus is configu...

Page 15: ... function codes can be configured depending on KNX gateway Modbus master slave Direction and Type Word register Modbus Master KNX to Modbus Write single holding register 06 Write multi holding registers 16 for DPT 14 and Double word register Modbus Master Modbus to KNX Read holding registers 03 Read input registers 04 Modbus Slave KNX to Modbus Read holding registers 03 Read input registers 04 Mod...

Page 16: ... intervals of read requests for the respective register The following options are available Every cycle Every second cycle Every fourth cycle Every sixth cycle Every eighth cycle 5 5 Channel function DPT 01 binary 1 bit Type The following types are configurable Bit register 1 bit KNX sets bit register Modbus Bit in word register 1 bit KNX sets 1 bit in word register Modbus Value in word register 1...

Page 17: ... inverted If yes the inverted value of the group object corresponds to the value of the bit in the word register 5 5 3 Type Value in word register Bit count This parameter defines the size of the value in the word register in bits Offset This parameter defines the position of the value in the word register offset from the right in bits ...

Page 18: ... is to be set in the register when an ON telegram is received Value The value that is set in the register when an ON telegram is received Behaviour on receiving data OFF Here it can be configured whether a value is to be set in the register when an OFF telegram is received Value The value that is set in the register when an OFF telegram is received ...

Page 19: ... value The following options are available No reaction Send ON Send OFF Behaviour on value match This parameter defines the behaviour of the group object in case the register value corresponds to the parameterized value The following options are available No reaction Send ON Send OFF Behaviour on value lower This parameter defines the behaviour of the group object in case the register value is sma...

Page 20: ... Bit Register 5 6 1 1 Direction KNX to Modbus Behaviour on receiving data DIM UP This parameter defines the behaviour of the bit register in case a DIM UP telegram has been received at the group object The following options are available No reaction Register 1 Register 0 Behaviour on receiving data DIM DOWN This parameter defines the behaviour of the bit register in case a DIM DOWN telegram was re...

Page 21: ...tion Modbus to KNX Behaviour on register 1 This parameter defines the behaviour of the group object in case the register value corresponds to the parameterized value The following options are available No reaction Send DIM UP Send DIM DOWN Send DIM STOP Behaviour on register 0 This parameter defines the behaviour of the group object in case the register value corresponds to the parameterized value...

Page 22: ...arameterized whether a value is to be set in the register when a DIM OPEN telegram is received Value The value that is set in the register when a DIM OPEN telegram is received Behaviour on receiving data DIM DOWN Here it can be parameterized whether a value is to be set in the register when a DIM DOWN telegram is received Value The value that is set in the register when a DIMM DOWN telegram is rec...

Page 23: ...haviour of the group object if the register value is greater than the parameterized value The following options are available No reaction Send DIM UP Send DIM DOWN Send DIM STOP Behaviour on value match This parameter defines the behaviour of the group object in case the register value corresponds to the parameterized value The following options are available No reaction Send DIM UP Send DIM DOWN ...

Page 24: ...annel function DPT 05 percent 1 byte Type The following type is configured Word register 1 byte percent value KNX is mapped to value in word register Modbus 5 7 1 Type Word register Position register This parameter defines the area of the word register that is mapped The following areas are available Low byte High byte High Low byte Value minimum register Register value which corresponds to Value ...

Page 25: ...nes no limits 5 8 Channel function DPT 05 configured 1 byte Type The following types are configurable Bit register 1 byte configured value KNX sets bit register Modbus Bit in word register 1 byte configured value KNX sets 1 bit in word register Modbus Value in word register 1 byte configured value KNX is mapped to value in word register Modbus 5 8 1 Type Bit register 5 8 1 1 Direction KNX to Modbu...

Page 26: ...aviour on value match This parameter defines the behaviour of the bit register in case the received value KNX corresponds to the parameterized value The following options are available No reaction Register 1 Register 0 Behaviour on value lower This parameter defines the behaviour of the bit register in case the received value KNX is smaller than the parameterized value The following options are av...

Page 27: ...register is set Behaviour on register 0 This parameter defines the behaviour of the group object in case the register is not set The following options are available No reaction Send value Value object The value that is sent to KNX when the register is not set 5 8 2 Type Bit in word register 5 8 2 1 Direction KNX to Modbus Value object This parameter defines the value for which the group object KNX...

Page 28: ...er defines the behaviour of the bit in the word register in case the received value KNX corresponds to the parameterized value The following options are available No reaction Register 1 Register 0 Behaviour on value lower This parameter defines the behaviour of the bit in the word register in case the received value KNX is smaller than the parameterized value The following options are available No...

Page 29: ...is set Behaviour on register 0 This parameter defines the behaviour of the group object in case the bit in the word register is not set The following options are available No reaction Send value Value object The value which is sent to KNX if the bit in the word register is not set 5 8 3 Type Value in word register Bit count This parameter defines the size of the value in the word register in bits ...

Page 30: ...eived value KNX is greater than the parameterized value The following options are available No reaction Set value in register Value register The value that is set in the word register Behaviour on value match This parameter defines the behaviour of the word register in case the received value KNX corresponds to the parameterized value The following options are available No reaction Set value in re...

Page 31: ...ster Value register The value that is set in the word register 5 8 3 2 Direction Modbus to KNX Value register This parameter defines the value for which the word register is checked Behaviour on value higher This parameter defines the behaviour of the group object KNX in the event that the register value is greater than the parameterized value The following options are available No reaction Send v...

Page 32: ...a the group object KNX Behaviour on value lower This parameter defines the behaviour of the group object KNX in the event that the register value is smaller than the parameterized value The following options are available No reaction Send value Value object The value that is sent via the group object KNX 5 9 Channel function DPT 05 unsigned 1 byte Type The following type is configured Word registe...

Page 33: ...he word register in bits Offset only for configured This parameter defines the position of the area in the word register offset from the right in bits The Bit count and Offset together must not be greater than 16 The value must fit into Bit count for example Bit count 1 Value 0 or 1 5 10 Channel function DPT 06 signed 1 byte Type The following type is configured Word register 1 byte value signed K...

Page 34: ...t from the right in bits 5 11 Channel function DPT 07 configured 2 bytes Type The following types are configurable Bit register 2 byte value configured KNX sets bit register Modbus Bit in word register 2 byte value configured KNX sets 1 bit in word register Modbus Value in word register 2 byte value configured KNX is mapped to value in word register Modbus 5 11 1 Type Bit register 5 11 1 1 Directi...

Page 35: ...viour on value match This parameter defines the behaviour of the bit register in case the received value KNX corresponds to the parameterized value The following options are available No reaction Register 1 Register 0 Behaviour on value lower This parameter defines the behaviour of the bit register in case the received value KNX is smaller than the parameterized value The following options are ava...

Page 36: ...gister is set Behaviour with register 0 This parameter defines the behaviour of the group object in case the register is not set The following options are available No reaction Send value Value object The value that is sent to KNX when the register is not set 5 11 2 Type Bit in word register 5 11 2 1 Direction KNX to Modbus Value object This parameter defines the value for which the group object K...

Page 37: ...er defines the behaviour of the bit in the word register in case the received value KNX corresponds to the parameterized value The following options are available No reaction Register 1 Register 0 Behaviour on value lower This parameter defines the behaviour of the bit in the word register in case the received value KNX is smaller than the parameterized value The following options are available No...

Page 38: ...s set Behaviour with register 0 This parameter defines the behaviour of the group object in case the bit in the word register is not set The following options are available No reaction Send value Value object The value which is sent to KNX if the bit in the word register is not set 5 11 3 Type Value in word register Bit count This parameter defines the size of the value in the word register in bit...

Page 39: ...ceived value KNX is greater than the parameterized value The following options are available No reaction Set value in register Value register The value that is set in the word register Behaviour on value match This parameter defines the behaviour of the word register in case the received value KNX corresponds to the parameterized value The following options are available No reaction Set value in r...

Page 40: ...ter Value register The value that is set in the word register 5 11 3 2 Direction Modbus to KNX Value register This parameter defines the value for which the word register is checked Behaviour on value higher This parameter defines the behaviour of the group object KNX in the event that the register value is greater than the parameterized value The following options are available No reaction Send v...

Page 41: ...the group object KNX Behaviour on value lower This parameter defines the behaviour of the group object KNX in the event that the register value is smaller than the parameterized value The following options are available No reaction Send value Value object The value that is sent via the group object KNX 5 12 Channel function DPT 07 unsigned 2 bytes Type The following type is configured Word registe...

Page 42: ...s the position of the area in the word register offset from the right in bits The Bit count and Offset together must not be greater than 16 The value must fit into Bit count for example Bit count 1 Value 0 or 1 5 13 Channel function DPT 08 signed 2 bytes Type The following type is configured Word register 2 byte value signed KNX is written read to from area in word register Modbus 5 13 1 Type Word...

Page 43: ... register Position register This parameter defines the area of the word register that is mapped The following areas are available Low byte unsigned High byte unsigned High Low byte unsigned Low byte 2th complement High byte 2th complement High Low byte 2th complement Value minimum register Register value which corresponds to Value minimum KNX Value maximum register Register value which corresponds...

Page 44: ...r The conversion is always transferred to the entire register area Value minimum maximum register defines no limits 5 15 Channel Function DPT 14 float 4 bytes Type The following types are configurable Word register 4 byte float value KNX is mapped to area in word register Modbus Double word register 4 byte float value KNX is mapped to two word registers Modbus 5 15 1 Type Word register ...

Page 45: ...e 2th complement High Low byte 2th complement Value minimum register Register value which corresponds to Value minimum KNX Value maximum register Register value which corresponds to Value maximum KNX Value minimum KNX KNX value which corresponds to Value minimum register Value maximum KNX KNX value which corresponds to Value maximum register The conversion is always transferred to the entire regis...

Page 46: ...word Address Hi word Address 1 Type Register value This parameter defines how the float value is mapped to Modbus The following options are available Modbus contains integer value unsigned Modbus contains integer value 2th complement Modbus contains float value IEEE Value minimum register Register value which corresponds to Value minimum KNX Value maximum register Register value which corresponds ...

Page 47: ... the transmission mode of the double word register The following options are available Write multi holding registers 16 Both word registers in one request Write single holding register 06 For each word register one request As Modbus master with Modbus to KNX and Double word register multi read requests should be activated in order to read both word registers in one request Address for Double word ...

Page 48: ...er area Value minimum maximum register defines no limits 5 16 2 2th complement The 2th complement is used in Modbus registers to represent negative values Thus for example a range of 32768 32767 can be displayed on a word register 5 16 3 Modbus communication If the KNX Gateway master mode does not receive a response from the slave within 1 second the request is repeated twice If these are not succ...

Page 49: ...of electric installations the relevant guidelines regulations and standards of the respective country are to be considered ETS5 Database www weinzierl de en products 886 ets5 Data sheet www weinzierl de en products 886 datasheet CE Declaration www weinzierl de en products 886 ce declaration Weinzierl Engineering GmbH Achatz 3 DE 84508 Burgkirchen Alz GERMANY Tel 49 0 8677 91 636 0 info weinzierl d...

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