Table 2: 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
1,150 m (3,770 ft)
1,400 m (4,600 ft)
Level IV 22 AWG
750 m (2,460 ft)
900 m (2,950 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 3: 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
500 m (1,640 ft)
500 m (1,640 ft)
Belden 8471
500 m (1,640 ft)
400 m (1,300 ft)
Level IV 22
500 m (1,640 ft)
320 m (1,050 ft)
JY (St.) Y 2 x 2 x 0.8
Table 4: Maximum Number of Devices per L
ON
W
ORKS
Network Segment
Maximum Allowed
Device Type
64 (if repeaters are not used)
Free Topology Transceiver (FTT)
-10 Nodes Only
128 (if repeaters are used)
FTT-10 Nodes Only
[(FTT10 x 2) + LPT10] < 128
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 NCM does not have an internal network terminator.
Table 5: NCM Ethernet Network Rules
Rules/Maximums Allowed
Category
Point-to-point star topology with network hubs/switches
General
Maximum of 100 supervisory devices may be connected to one
site
Number of Devices
2,000 m (6,600 ft) for plastic/glass fiber optic with external
adapter
Line Length and Type
100 m (330 ft) CAT5 cable
For 10/100BaseT, no line terminators allowed
Terminations
1 Refer to the
N1 Ethernet/IP Network Technical Bulletin (LIT-6360175)
for recommended parts and part numbers.
Setup and Adjustments
Data Protection Battery
The
NCM
is shipped with the data protection battery
installed and connected. Do not disconnect the battery
for any reason other than to replace a defective battery.
The 24 VAC supply power to the NCM charges the data
protection battery. At initial startup, the battery may
require a charging period of at least 4 hours before it
supports data protection if power fails. Up to three
consecutive, back-to-back power failures can occur before
a full 15-hour recharging period is required.
7
NCM45x0-2 Series Network Control Module Installation Instructions
