12
Gossen Metrawatt GmbH
Bus Left, Bus Right
Each summator is equipped with 2 complete ECS LAN interfaces. They are designated
as LAN L and LAN R. Each of these interfaces can be operated with
either 2-wire or 4-wire transmission technology (RS485).
2-Wire
A bus system, by means of which several summators are connected to the same bus
cable, must be laid out with 2-wire technology.
4-Wire
4-wire technology is used where unusually long transmission paths are involved, or
when boosters need to be integrated into the system. In such cases only line-to-line
connection is possible.
Cable Lengths (LAN Bus)
If several summators (up to 16) are to be installed in close proximity to one another
(overall maximum bus cable length of 100 m), a bus connection making use of a
twisted, two conductor cable is recommended. A line-to-line connection with a twisted
four conductor cable is not necessary until the distance between 2 summators is
greater than 400 m (max. 1200 m).
ECS-LAN
Terminal Assignments
User Directory
Directory of ECS LAN Users
Each summator automatically generates an internal directory (ECL command: DIR) of all
users connected to the ECS LAN (assuming that unique identification has been
assigned throughout the entire system). Each summator acknowledges its presence to
ECS LAN
, Sample Network
LAN
L
LAN
R
+ EA
+ E
+ EA
+ E
45 46 47 48 49 50 51 52
U1601
LAN
L
LAN
R
+ EA
+ E
+ EA
+ E
45 46 47 48 49 50 51 52
U1601
LAN
L
LAN
R
+ EA
+ E
+ EA
+ E
45 46 47 48 49 50 51 52
U1601
LAN
L
LAN
R
+ EA
+ E
+ EA
+ E
45 46 47 48 49 50 51 52
U1601
LAN
L
LAN
R
+ EA
+ E
+ EA
+ E
45 46 47 48 49 50 51 52
U1601
LAN
L
LAN
R
+ EA
+ E
+ EA
+ E
45 46 47 48 49 50 51 52
U1601
2-Wire Bus
2-Wire Line-to-Line
4-Wire Line-to-Line
2-Wire Line-to-Line
Suitable for fiber optic cable transmission
and RS485 boosters
Summary of Contents for U1601
Page 11: ...Gossen Metrawatt GmbH 11 ECS LAN Sample Network ...
Page 73: ...Gossen Metrawatt GmbH 73 13 Functions Overviews Functions Overview U1601 ...
Page 74: ...74 Gossen Metrawatt GmbH Functions Overview U1602 ...
Page 75: ...Gossen Metrawatt GmbH 75 Functions Overview U1603 ...
Page 79: ...Gossen Metrawatt GmbH 79 ...