Download Network Gateway Implementation and Operation

2.1.3
2.1.3 Cable Selection at the Local LCN
For each "local" NG responsible and alternate pair, you will have to define which cable,
A/B, is primary for transmission. This adds the final element to our hypothetical
configuration:
"Local"
LCN
1
1
1
Primary
Cable
A
A
A
Primary
NG
17
18
19
Alternate
NG
18
19
20
"Remote" Responsible Alternate
LCN
Server
Server
2
5(NG 21) 6(NG 22)
3
9(NG 25) 10(NG 26)
4
13(NG 29) 14(NG 30)
2
2
2
B
B
B
21
22
23
22
23
24
1
3
4
1(NG 17) 2(NG 18)
10(NG 26) 11(NG 27)
14(NG 30) 15(NG 31)
3
3
3
A
A
A
25
26
27
26
27
28
1
2
4
2(NG 18) 3(NG 19)
6(NG 22) 7(NG 23)
15(NG 31) 16(NG 32)
4
4
4
B
B
B
29
30
31
30
31
32
1
2
3
3(NG 19) 4(NG 20)
7(NG 23) 8(NG 24)
11(NG 27) 12(NG 28)
The preceding example is not intended to be a recommendation. Rather, it was chosen to
show the type of planning that must go into your preparation as size and complexity of a
network increases.
2.2. ASSIGN IDENTIFIERS TO NETWORK ELEMENTS
To each LCN system—
Assign a "Local System Number" (1-64) that uniquely defines
this LCN system within the network. This number is used in
LCN configuration and in some LCN displays.
Assign a "System Title" (1 or 2 alphanumeric characters) that
uniquely defines this LCN within the network. The System
Title must have at least one alpha (non-blank, non-numeric)
character. The System Title is used to identify the LCN in the
extended point.parameter name form used in addressing remote
data. The System Title is separated from the point name by a
backslash delimiter. For example: id\pt_nam.param_nm
Assign a 20-character "System Description" that will further
identify that LCN on Universal Station displays.
To each NG—
Assign a PIN local (hardware) address (1-64), to be pinned into
the PIN interface board (NGIO, NIM MODEM, or fiber optic
interface board). Optionally, each NG may, in the future, have a
PIN global (software) address as well.
Assign the LCN node address that will be given to the NG
during LCN configuration.
NG Implementation and Operation
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