ABB Industrial IT enabled REX 521 Technical Reference Manual, General page 30

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Technical Reference Manual, General
MicroSCADA
ABB Network Partner
RER 111 LON
star-coupler
Fibre-optic
LON network
R E X 5 2x
R E X 5 2x
REX 521 protection relays
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In the system described in the figure above, communication is usually arranged as
shown in the table below.
'DWD W\SH
Events and alarms
Control commands
Status of breakers and isolators
Analogue measurement values
Other DI, AI data
Other DO data
Parameter data
Disturbance recorder data
The LAG 1.4 default communication settings may be loaded by selecting Execute
from the HMI
(Configuration\Communication\Comm.settings\LON\Load def
config.). This operation blanks the internal EEPROM and boots the Neuron chip.
Thereafter, the default communication settings are loaded and stored into the
Neuron chip. This operation takes approximately 15 seconds according to LAG 1.4.
From the front panel, the user should configure the Node number, the Subnet
number and the Bit rate of REX 521 device.
The LON bus event buffer includes 150 last events.
1. In order to succeed, the LON protocol has to be selected as the rear port protocol.
PCLTA card and
RER 107 inside PC
RER 111 LON
SFIBER connection
cards
Router card in
RER 111 LON
star-coupler
LON/SPA
RER 103
gateway
SPAC 331 C I
0
F
I
O
C
E
SPA bus module REF 54_
feeder terminal
connected
over LON/SPA-
gateways
↔
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sliding window protocol
sliding window protocol
transparent SPA bus messages
sliding window protocol
sliding window protocol
sliding window protocol
transparent SPA bus messages
transparent SPA bus messages
file transfer over the LON network
1MRS 751108-MUM
Electrical LON
network
DI, AI and DO modules
“LonMark devices”
lonsysrex_a
1