Table 6: Rules for KNX Protocol
Rules/Maximums Allowed
Category
No termination
Termination
At least ISO 9002
Manufacturer's Quality
Management System
Table 7: Guidelines for L
ON
W
ORKS
Network Bus Topology
Maximum Segment Length with
FTT10 and/or LPT10 Devices
Maximum Segment Length with FTT10
Devices Only
Cable Type
2,200 m (7,218 ft)
2,700 m (8,858 ft)
Belden
®
85102 Cable
2,200 m (7,218 ft)
2,700 m (8,858 ft)
Belden 8471 Cable
1,150 m (3,773 ft)
1,400 m (4,593 ft)
Level IV 0.6 mm (22 AWG)
750 m (2,460 ft)
900 m (2,953 ft)
JY (St.) Y 2 x 2 x 0.8
1
For the bus topology, the maximum length stub cable is 3 m (10 ft), and the stub lengths must be calculated into the overall
segment length.
Table 8: Guidelines for L
ON
W
ORKS
Network Free Topology
Maximum Segment Length with
FTT10 and/or LPT10 Devices
Maximum Node-to-Node Distance
Cable Type
500 m (1,640 ft)
500 m (1,640 ft)
Belden 85102 Cable
500 m (1,640 ft)
500 m (1,640 ft)
Belden 8471 Cable
500 m (1,640 ft)
400 m (1,312 ft)
Level IV 0.6 mm (22 AWG)
500 m (1,640 ft)
320 m (1,050 ft)
JY (St.) Y 2 x 2 x 0.8
Table 9: Maximum Number of Devices per L
ON
W
ORKS
Network Segment
Maximum Allowed
Device Type
32 L
ON
W
ORKS
devices supported (on NIE292x Type models only).
FTT-10 Nodes Only
([FTT10 x 2] + LPT10) < 32
Mixed FTT-10 and LPT-10
Nodes
Terminators
2 bus type EOL terminators required (NU-EOL202-0)
Bus Topology
1 free topology terminator required (NU-EOL203-0)
Free Topology
Maximum of 1 per segment
Physical Layer Repeaters
1
Each LPT10 channel segment (between repeaters) requires its own power supply. Other factors, such as power consumption
of individual LPT10 devices, may limit a segment to fewer devices. The NCE does not have an internal network terminator.
Table 10: NIE Ethernet Network Rules
Rules/Maximums Allowed
Category
Point-to-point star topology with network hubs and switches
General
Maximum of 100 supervisory devices may be connected to one site in the
Metasys
system.
Number of Devices
2,000 m (6,600 ft) for plastic or glass fiber optic with external adapter
Line Length and Type
100 m (330 ft) CAT5 cable
For 10/100 BaseT, no line terminators allowed
Terminations
18
NIE29 Installation Instructions