Honeywell TotalPlant LCN, System Installation

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LCN System Installation A-5 9/96
A.5
A.5 HIWAY GATEWAY CABLING
For an overview of Hiway Gateway preferred access cabling with or without a Hiway
Traffic Director (HTD), see Figure A-4. For hiway cable specifications and address
priority assignments, refer to the Data Hiway Subsystem Site Planning manual in the
Basic System Summary binder.
AM HM US
1
2
3
4
11
12
13 10
9
8
7
6
5
B A
HG
Primary
10
9
8
7
6
5 1
2
3
4
11
12
13
B A
HG
Secondary
PIU
NC
NC
NC
NC
NC
NC
NC NC
NC
NC
NC
NC
NC
NC
DR1
COM
Rx1
COM
SW
COM DR1
COM
Rx1
COM
SW
COM
HTD
Request (REQ)
Grant (GRT)
Switch (SWP)
{ }
}
}
{
{
NC -
MC -
OP -
PIU -
HG -
DR1 -
DR2 -
DH -
MRG -
AM -
HM -
US -
Rx1 -
Rx2 -
COM -
No Connection
Multifunction Controller
Operator Station
Process Interface Unit
Hiway Gateway
Drive 1
Drive 2
Data Hwy Gnd
Mstr. Ref. Gnd
Application Module
History Module
Universal Station
Receive 1
Receive 2
Common
LEGEND
With HTD
Local Control
Network (LCN)
Coax Cable
Data Hiway
Coax Cable
LCN A
LCN B
Hiway A
Hiway B
*
*
Shielding
GRT
NC
NC
NC
NC
NC
Hiway A
Hiway B
A Hiway
B Hiway
HG
Primary HG
Secondary
Rx1
COM
DR1
COM
Rx2
COM
DR2
COM
DR1
COM
Rx1
COM
Rx2
COM
DR2
COM
8
7
10
9
2
1
4
3
11
12
13
5
6
10
9
8
7
2
1
4
3
11
12
13
5
6
NC
NC
REQ COM COM
Preferred Access Device
(OP Station or Test Device)
HG LG
NC
Ground
(MRG)
(DH)
Without HTD
*
* *
*
*
*
* Shielded/Twisted Pairs
NOTE: Primary HG has the highest priority and RX1/DR1 lines
have higher priority than RX2/DR2.
MC OP
”
”
”
”
”
”
”
”
1264
Figure A-4 — Overview of HG Preferred Access Cabling