KNX Basics v KNX Devices v KNX Topology

KNX Basics v KNX Devices v KNX Topology v 3 Basic KNX building functions: 1. 2. 3. On/Off (binary output) Dimming Blinds v ETS Configuration Steps v ETS Demo (On/Off) KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 1 October 20

KNX Devices § Sensors: § § Actuators: § § Optimize bus traffic All devices have a unique address § § Connect ETS to the bus Couplers & Repeaters: backbone coupler, line repeater § § Connect electrical consumer to the bus Interfaces: USB, IP, RF (RS 232) § § Send information to the bus i. e. individual address = IA The IA defines the location of the devices within the installation § § § IA = x. y. z x. y = the line the device is connected to x = the area the device belongs to KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 2 October 20

Couplers & Repeaters § All have the same device type § But with a different configuration • Backbone Coupler - IA = x. 0. 0 - where x: 1. . 15 • Line Coupler - IA = x. y. 0 - where x: 0. . 15 and y: 1. . 15 • Line Repeater - IA = x. y. z - where x: 0. . 15 and y: 1. . 15 and z <> 0 KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 3 October 20

Topology: line § § Line 1 PS/CH Maximum 255 devices PS limitation = 64 devices Solution: up to 4 line segments Per extra line segment: • • § § A 1 KNX Association International Remark #1: per line in total • • S 1 PS+CH Line Repeater Max 4 PS+CH Max 3 Line Repeaters Remark #2: CH = choke • • AC/DC separation AC: ‘ 1’ vs. ‘ 0’ KNX: The worldwide STANDARD for home & building control Page No. 4 October 20

Topology: area Area 1 § Area = group of lines connected by Line Couplers (LC) to a main line. § Up to 15 lines Hauptlinie Main Line PS/CH LK 1 LC 1 TLN 1 SV / Dr LC 2 SV / Dr PS/CH S 1 A 1 Line 1 KNX Association International A 1 Linie 15 Line 2 KNX: The worldwide STANDARD for home & building control Page No. 5 October 20

Topology: several areas PS/CH Backbone BC 2 Hauptlinie § If required, the KNX installation can be expanded by means of a Backbone line. § § Up to 15 areas > 65, 000 devices Main Line PS/CH LK 1 LC 1 BC 1 Main Line SV / Dr PS/CH LK 1 PS/CH LC 1 Hauptlinie LC 2 TLN 1 SV / Dr PS/CH LC 2 TLN 1 SV / Dr S 1 PS/CH S 1 A 1 Line 1 KNX Association International A 1 Linie 15 Line 2 A 1 Area 2 Linie 15 Line 2 Area 1 KNX: The worldwide STANDARD for home & building control Page No. 6 October 20

Couplers: optimize bus traffic GA 1 telegram GA 1 Line A LC Filter Table: GA 1 telegram GA 2 telegram GA 1 + GA 2 KNX Association International Line B KNX: The worldwide STANDARD for home & building control Page No. 7 October 20

3 Basic KNX Building Functions § Part 1: what happens physically on the bus? • Telegrams virtually connect sensors to actuators § Part 2: how does ETS ‘see’ KNX devices? • KNX Devices have group objects • Link them together with group addresses KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 8 October 20

On/Off (binary output) Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing E 1 (e. g. 0/1/1) § p 2 = Group Value: in this case 0 or 1 (1 bit) Actuator receives the telegram and processes it Actuator reacts accordingly: switch on/off E 1 KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 9 October 20

On/Off: encoding Group. Value. Write( P 1, P 2 ) § P 1 represents E 1 § P 2 encoding – length = 1 bit: • 0 = switch E 1 off • 1 = switch E 1 on KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 10 October 20

Dimming Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing either E 1 – click or E 1 - push Actuator receives the telegram and processes it ! ‘E 1 – click’ and ‘E 1 – push’ are represented by two different Group Addresses KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 11 October 20

Dimming & ‘E 1 – click’ Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing E 1 – click (e. g. 0/2/1) § p 2 = Group Value: in this case 0 or 1 (1 bit) Actuator receives the telegram and processes it Actuator reacts accordingly: switch on/off E 1 KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 12 October 20

Dimming click: encoding Group. Value. Write( P 1, P 2 ) § P 1 represents E 1 § P 2 encoding – length = 1 bit: • 0 = switch E 1 off • 1 = switch E 1 on KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 13 October 20

Dimming & ‘E 1 – push’ Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing E 1 – push (e. g. 0/3/1) § p 2 = Group Value: in this case between 0 and 7 (4 bit) Actuator receives the telegram and processes it Actuator reacts accordingly: dim up/down E 1 or stop dimming KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 14 October 20

Dimming push: encoding Group. Value. Write( P 1, P 2 ) § P 1 represents E 1 § P 2 encoding – length = 4 bit: • 1 st bit = direction: 0: down, 1: up • 3 other bits = 0: stop, 1. . 7: step KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 15 October 20

Dimming: what happens? § § Send ‘start dimming’ telegram: 1 direction bit + 3 step bits Dimmer starts dimming • • • § KNX Association International dimming step = 2’step bits’-1 Δ brightness = 256/dimming step Until 0% or 100% or after a ‘stop dimming’ telegram Send ‘stop dimming’ telegram KNX: The worldwide STANDARD for home & building control Page No. 16 October 20

Blinds Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing either E 1 – click or E 1 - push Actuator receives the telegram and processes it ! ‘E 1 – click’ and ‘E 1 – push’ are represented by two different Group Addresses KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 17 October 20

Blinds & ‘E 1 – push’ Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing E 1 – push (e. g. 0/4/1) § p 2 = Group Value: in this case 0 or 1 (1 bit) Actuator receives the telegram and processes it Actuator reacts accordingly: move E 1 up/down KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 18 October 20

Blinds push: encoding Group. Value. Write( P 1, P 2 ) § P 1 represents E 1 § P 2 encoding – length = 1 bit: • 0 = move E 1 down • 1 = move E 1 up KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 19 October 20

Blinds & ‘E 1 – click’ Sensor sends a Group. Value. Write(p 1, p 2) telegram: § p 1 = Group Address representing E 1 – click (e. g. 0/5/1) § p 2 = Group Value: in this case 0 or 1 (1 bit) Actuator receives the telegram and processes it Actuator reacts accordingly: stop E 1 or move E 1 one step up/down KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 20 October 20

Blinds click: encoding Group. Value. Write( P 1, P 2 ) § P 1 represents E 1 § P 2 encoding – length = 1 bit: • 0 = stop E 1 movement • 1 = move E 1 1 step KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 21 October 20

3 Basic KNX Building Functions § Part 1: what happens physically on the bus? • Telegrams virtually connect sensors to actuators § Part 2: how does ETS ‘see’ KNX devices? • KNX Devices have group objects • Link them together with group addresses KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 22 October 20

On/Off: 1 Group Object in ETS Group Address Sensor 1 -fold push button KNX Association International Actuator GA = 0/1/1 On/Off Group Object #0 KNX: The worldwide STANDARD for home & building control Page No. 23 October 20

About Group Addresses § Minimal requirement: • § No real limitation: • § e. g. 1 sensor & 65. 000 actuators all connected via the same Group Address Sensors with >1 GA ? • • § 1 sensor & 1 actuator needs to be represented per Group Address is possible but makes no sense because a sensor can only send via the first assigned Group Address Actuators with >1 GA ? • • is possible and does make sense i. e. an actuator can receive information via any assigned Group Address KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 24 October 20

Sensors with > 1 GA Sensor : #0 Group Object A G sense o 1 n > 1 -fold via t es th i k d a n w e m s s or but only le 0/1/1 b n button ens i a s Spush c s r o • • ne ssig a t s r he fi is p enso s a use 0/1/2 beca 0/1/3 ress d d A up d Gro Actuator Group Object #0 0/1/1 On/Off 4/5/6 … KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 25 October 20

Actuators with > 1 GA ress d d A p Grou d. Actuator Sensor igne s s a Object any#0 A: #0 ke sense Group Object a G i v On/Off 1 n > h ma atio t 1 -fold i s m e r w o o f 0/1/1 nd d ve in ators sible a 0/1/1 i e u t c push button c e A pos can r r s i o t a • 0/1/2 actu n a. e • i. 0/1/3 4/5/6 … KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 26 October 20

Dimmer: 2 Group Objects in ETS Actuator Sensor GO#1 – click 1 -fold 0/2/1 push button 0/3/1 GO#2 – push KNX Association International GO#1 – on/off 0/2/1 0/3/1 On/Off Dim GO#2 – dim KNX: The worldwide STANDARD for home & building control Page No. 27 October 20

Blinds: 2 Group Objects in ETS Actuator Sensor GO#1 – click GO#1 – step/stop 1 -fold 0/4/1 push button 0/5/1 GO#2 – push KNX Association International 0/5/1 Step/Stop Move Up/Down GO#2 – move up/down KNX: The worldwide STANDARD for home & building control Page No. 28 October 20

ETS configuration steps § Set up individual addresses § by creating the topology structure § result: all devices have a unique network identification § Set up individual device functionality § by configuring the parameters of all devices § result: all required group objects are available § Set up functions § by assigning group addresses to group objects § result: group objects are linked together as required KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 29 October 20

Next recommended steps § This was only an introduction!! § e. Campus = test ETS by yourself § Become a KNX partner via a KNX training center of your choice. KNX Association International KNX: The worldwide STANDARD for home & building control Page No. 30 October 20