ABB AC 800F Mounting And Installation Instructions Manual page 118

4
The following table shows this calculation.
No.
1
2
3
4
5
6
7
8
Sum of all cable lengths and propagation time equivalents
Hence the above-described network setup meets the requirement:
Maximum network length ≤ ≤ ≤ ≤ 4800 m
When designing a network observe the following rules:
•
Maximum distance between two 10BaseFL modules: 4000 m
•
Maximum distance between 10BaseFL module and 10BaseFL transceiver: 2000m
•
Connecting more than 5 network concentrators in series requires so-called re-
timing boards
•
When using unshielded twisted-pair (UTP) cables, the length of the UTP segment
has to be increased by 10 % for calculation.
4-52
Cable of length or component
10Base2 cable, length 10 m
10Base2 cable, length 15 m
10Base2 cable, length 50 m
10Base5 concentrator module
10BaseFL concentrator module
10BaseFL cable, length 100 m
10BaseFL transceiver
AUI cable, length 10 m
Cabling the AC 800F
Cable length
10 m
15 m
50 m
10 m
30 m
100 m
30 m
10 m
255 m