Mitsumi electronic LMAP03U ユーザーズマニュアル
12
4-3 Initialization Settings of L
ON
W
ORKS
®
Network
(1) System Specifications
• Up to 64 FTT-10/FTT-10A transceivers are allowed per network segment.
• LPT-10 transceivers may be used on network segments with FTT-10/FTT-10A transceivers, but are
subject to additional constraints, particularly on distance.
See the LPT-10 Use's Guide for more information.
• The average temperature of the wire must not exceed +55˚C (+131˚F), although individual segments of
wire may be as hot as +85˚C (+185˚F).
Maximum bus length
Belden 85102
2700(8858)
Belden 8471
2700(8858)
Level IV 22AWG
1400(4593)
Units
meters (feet)
JY(St)Y 2X2X0.8
900(2953)
TIA Category 5
900(2953)
Maximum node-to-node distance
Belden 85102
500(1640)
Belden 8471
400(1312)
Level IV 22AWG
400(1312)
Units
meters (feet)
JY(St)Y 2X2X0.8
320(1050)
TIA Category 5
250(820)
Maximum total wire length
500(1640)
500(1640)
500(1640)
500(1640)
450(1476)
The free topology transmission specification includes two components which must both be met for proper
system operation. The distance from each transceiver to all other transceiver and to the termination
(including the LPI-10 termination, if used) must not exceed maximum node-to-node distance.
If multiple paths exist, e.g., a loop topology, then the longest path should be used for the calculations.
The maximum total wire length is the total amount of wire connected per segment.
For details, refer to “ FTT-10A Free Topology Transceiver User's Guide ” of Echelon Corporation.
For reference, the system specifications and Transmission specifications are described.
For reference, the system specifications and Transmission specifications are described.
(2) Transmission Specifications
Doubly-Terminated Bus Topology Specifications
Free Topology Specifications