PX Compact

PX Modular

PX Open10

PX KNX9

Item

PXC12.D

PXC12-E.D

PXC22.D

PXC22-E.D

PXC-NRUF

PXC22.1.D

PXC22.1-E.D

PXC36.1.D

PXC36.1-E.D

PXC50.D

PXC50-E.D

PXC100.D

PXC100-E.D

PXC200.D

PXC200-E.D

PXC00.D

PXC00-E.D

PXC001.D

PXC001-E.D + PXA40-RS..

PXC001.D

PXC001-E.D

Temporary alarm receiver1

18*

18*

18*

18*

18*

18*

18*

18*

Configured alarm receivers2

20*

20*

20*

20*

20*

20*

20*

20*

BACnet references

COV server resources3

[1,400*]

[1,400*]

[1,400*]

[1,400*]

[1,400*]

[1,400*]

[1,400*]

[1,400*]

BACnet references

COV client resources4

400*

950*

950*

950*

950*

950*

650*

400*

Total BACnet objects

[4,000]

[4,000]

[4,000]

[4,000]

[4,000]

[4,000]

[4,000]

[4,000]

Number of function block instances (application size)

1,900*

1,900*

1,900*

1,900*

2,900*

1,900*

2,900*

2,900*

Trend log5

100

100

100

200

350

200

600

100

Trend log multiple19

20

20

20

20

20

20

20

20

Scheduler

1517

1517

5018

5018

5018

5018

5017

5017

Calendar14

10

10

50

50

50

50

50

50

PXM10

1

1

1

1

1

1

1

n/a

PPS2 devices (ALN)8 (e.g. QAX3.x, RXZ90.1)

5

5

n/a

n/a

n/a

n/a

5

n/a

Physical data points onboard

12 / 22 / 64

22 / 36

n/a

n/a

n/a

n/a

n/a

n/a

Physical data points TX-I/O

n/a

16 / 28

80*

200* 15

(350) 15

n/a

n/a

n/a

Physical data points onboard + TX-I/O

n/a

38 / 64

80

n/a

n/a

n/a

n/a

n/a

Physical data points TX-I/O + PTM

n/a

n/a

52*

200* 15

(350)15

n/a

n/a

n/a

Total number of data points onboard + TX-I/O + PTM + TX Open

n/a

400*

400*

600* 15

(1,000)15

n/a

n/a

n/a

TX Open per island bus

n/a

5

5

5

5

n/a

n/a

n/a

PXX-PBUS21

n/a

n/a

1

1

(1)22

n/a

n/a

n/a

Dynamic calendar objects20

10*

10*

10*

10*

10*

10*

10*

10*

Dynamic event enrollment objects20

50*

50*

50*

50*

50*

50*

50*

50*

Dynamic notification class objects20

50*

50*

50*

50*

50*

50*

50*

50*

Dynamic schedulers

10*

10*

10*

10*

10*

10*

10*

10*

Dynamic trend log objects20

100*

100*

100*

100*

100*

100*

100*

100*

Dynamic trend log multiple objects20

20*

20*

20*

20*

20*

20*

20*

20*

Key

1

PXM20, PX-Web and XWP are temporary alarm receivers.

2

Desigo CC is a configured alarm receiver. The number of entries in the notification class is limited to 20. The total number of different configured alarm receivers across all notification classes is limited to 30.

3

Max. number of BACnet references, COV servers: SubscribeCOV requests which can be accepted. Example: 1400: 1 client and 1400 values or 2 clients and 700 values.

4

Max. number of BACnet references, COV client resources, i.e. values read from or written to (commanded) your own automation station or a remote automation station.

BACnet client references are used in Input, Output, Scheduler, Trendlog and Group objects (all NameRef_Type inputs with AddrKind = B). The configured alarm receivers of the Notification Class objects do NOT require any BACnet client references.

The available number of BACnet client references shall address not more than 50 different remote automation stations. If this value is exceeded the number of BACnet broadcast messages on the network will increase.

Example: 400: 1 client and 400 values or 2 clients and 200 values.

5

Every active Trendlog object needs a BACnet reference.

Trends need 12 bytes per entry (irrespective of data type). Max. 64 KB can be allocated to the log buffer (approx. 5,000 entries) for each Trendlog object. These log buffers are assigned in D-MAP RAM. If the log buffer size is changed and there is insufficient D-MAP RAM available, the Reliability property of the Trendlog object is set to Memory limit reached.

8

The address of the PPS-2 devices QAX84.1 and RXZ90.1 is always 1 (no address selection).

9

PX KNX = PXC001.D / PXC001-E.D and loaded PX KNX firmware.

10

PX Open = PXC001.D / PXC001-E.D with option module PXA40-RS1/RS2 and loaded PX Open firmware.

14

Maximum 30 calendar entries.

15

The number of physical data points influences the reaction time of the application. If minimum reaction times are specified, the number of physical data points may have to be reduced.

The following relationship between reaction times and the number of physical data points can be assumed:

- up to 150 physical data points = Reaction times < 1s

- up to 250 physical data points = Reaction times 1…2 s

- up to 350 physical data points = Reaction times 2…3 s

17

Number of switching times per day: 10; max. 5 BACnet references.

18

Number of switching times per day: 20; max. 5 BACnet references.

19

Every active trendlog multiple object needs a BACnet reference per logged value.

5 logged values are assumed for the number of trendlog multiple objects (number of Trendlog / 5).

Trends need 12 bytes per entry (irrespective of data type).

Max. 64 KB can be allocated to the log buffer (approx. 5,000 entries) for each trendlog object.

These log buffers are assigned in D-MAP RAM.

If the log buffer size is changed and there is insufficient D-MAP RAM available, the Reliability property of the Trendlog object is set to Memory limit reached.

20

Dynamic objects are counted the same as non-dynamic objects for total limits.

21

Limits of the PXX‑PBUS extension module:

- DB (Function blocks instances): 1500

- Trends: 100

- Local BACnet references. 100

22

To prevent high cycle times of the PXX‑PBUS extension module:

- Only use PXC100-(E).D controllers together with PXX‑PBUS; do not use PXC 200 controllers.

- Do not connect PXX‑L11 or PXX‑L12 or PX Web modules (WO‑W2) together with PXX‑PBUS on the same controller.

- Do not use WebServer functionality on PXC, when using PXX‑PBUS.

- Do not extend existing applications from PXC128‑U or PXC64‑U with new functionality.

*

Limit* = Technical limit verified.

[ *]

[Limit*] = Technical limit not verified.

[ ]

[Limit] = Recommended limit not verified.

( )

(Limit) = Limit subject to proviso. Refer to footnotes.

D-MAP RAM

If the whole D-MAP RAM is taken up with trendlog objects, a delta (differential) download will no longer be possible.

The overall size of the free and used D-MAP RAM can be viewed with XWP, Desigo CC or PXM20. The information concerned is stored in the device object under the memory statistics property [MemStc].

Access rights management

Access rights are managed via USPRF. You can define a maximum of 10 user groups and 20 users. 10 user groups and 6 users are already predefined as a template (global chart).