User Manual

System limits

Limits for MS/TP

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5.4 Limits for MS/TP

Use the router PXG3.L / PXG3.M with HW Index C only.

Data point integration: MS/TP devices are considerably slower than IP devices due to the lower network speed.

Reference value: Approximately 15 times slower (depending on the project setup).

MS/TP is tested with 10 devices that support COV (e.g. DXR2). Recommendation: Assign or integrate a

maximum of 10 MS/TP devices on one network branch. More devices and/or network complexity are permitted,

but they may result in longer and inconsistent times and degraded performance.

● Assign devices offline/online:

More than 10 devices degrade performance in ABT-SSA.

Additional network branches degrade performance in ABT-SSA.

● Device learning offline/online:

More than 10 devices takes longer.

The times are slower with additional network branches.

● Device restart (e.g., after the power returns):

More than 10 devices takes longer.

The times are slower for a restart.

The following limits and constraints must be considered if the MS/TP devices do not support COV, i.e. only

polling:

● Disable the list view core function (user profile setting in ABT Site)

● Limit to one concurrent operating client (limit your network topology)

● Set baud rate to 38400 or higher

● Only use the online trends functionality very limited

● Limit the points per graphic to 15

5.5 Supported BACnet objects

The BACnet objects supported in Desigo Control Point are listed in the Appendix.

5.6 BACnet revision

System compatibility PXM50-1

PXM40-1

PXM30-1

PXM50.E

PXM40.E

PXM30.E

PXG3.W100-1 PXG3.W200-1

BACnet devices

n.a. as of BACnet revision 1.05