Mitsubishi Electric LMAP02, Руководство по установке

Страница: 13 / 20

12
4-3 Initialization Settings of L
ON
W
ORKS
® Network
(1) Termination of L
ON
W
ORKS
®
The product can be set with the termination of L
ON
W
ORKS
® .
(2) 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 55˚C, although individual segments of wire may
be as hot as +85˚C.
SW71-1
OFF
ON
OFF
ON
SW71-2
OFF
OFF
ON
ON
Termination Resistance Value
– ( Factory setting)
100
Ω ±
1%
50
Ω ±
1%
Termination Switch (SW71)
Maximum bus length
Belden 85102 2700
Belden 8471 2700
Level IV 22AWG 1400
Units
meters
JY(St)Y 2X2X0.8 900
TIA Category 5 900
Maximum node-to-node distance
Belden 85102 500
Belden 8471 400
Level IV 22AWG 400
Units
meters
JY(St)Y 2X2X0.8 320
TIA Category 5 250
Maximum total wire length
500
500
500
500
450
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.
(3) Transmission Specifications
Doubly-Terminated Bus Topology Specifications
Free Topology Specifications