User Manual

BACnet networks with MS/TP trunks
Diagnostics and troubleshooting in BACnet networks with MS/TP trunks
5
A6V11159798_en--_03 65 | 71
Description Ground
floor
DXR2
2nd floor
DXR2
3rd floor
DXR2
4th floor
DXR2
BA Mgmt
DXR2
Primary
plants
System
level
Refrigerati
on
machines
BACnet
3rd
Sinteso
FS20
BMA
PXG3.M,
MS/TP start
address
0 0 0 0
MS/TP
addressing,
Max.Master
/ Max.Info
100/50 100/50 100/50 100/50
SNMP, read
community
enabled,
public
enabled,
public
enabled,
public
enabled,
public
Central
functions,
floor scope
192.168.11.
1
192.168.12.
1
192.168.13.
1
192.168.14.
1
Central
functions,
superposed,
building
scope
192.168.15.
1…2
Number of
PXC, FS20,
BACnet3rd
3 1 2 10
Reserve IP
addresses
251 253 248 240
IP address
range
from…
192.168.16.
1
192.168.17.
1
192.168.20.
1
192.168.21.
1
IP address
range ...to
192.168.16.
249
192.168.17.
249
192.168.20.
249
192.168.21.
249
PXC BBMD 192.168.16.
1
IP address
range
Mgmt'statio
ns Desigo
CC from…
192.168.17.
11
IP address
range
Mgmt'statio
ns Desigo
CC ...to
192.168.17.
13
Mgmt'statio
n Desigo
CC, entry in
FDT
192.168.15.
250
5.5 Diagnostics and troubleshooting in BACnet networks with
MS/TP trunks
Typical faults and their solution
BACnet on MS/TP involves the use of a large number of components and this results in a certain degree of
complexity and a corresponding vulnerability to errors.
If a problem arises in the system, it must be located in a step-by-step procedure. Always start you analysis
at the lowest system. Only continue to the next higher system once you are sure that the system is