Alstom MiCOM P545 - 1.1.7 Ethernet board

P54x/EN FD/La4 Firmware Design
(FD) 9-4
MiCOM P543, P544, P545 & P546
1.1.7 Ethernet board
This
board provides the Ethernet connectivity for protocols support on that Media. It provides
network connectivity through either copper or fiber media at rates of 10 Mb/s (copper only) or
100 Mb/s. There is also an option on this board to specify IRIG-B port (modulated or un-
modulated). This board, the IRIG-B board mentioned in section 1.1.5 and second rear
comm
s board mentioned in section 1.1.6 are mutually exclusive as they all utilise
slot A
within the relay case.
All modules are connected by a parallel data and address bus which allows the processor
board to send and receive information to and from the other modules as required. There is
also a separate serial data bus for conveying sample data from the input module to the
processor. Figure 1 shows the modules of the relay and the flow of information betwee
n
them.
Main processor board
Relay board
Power supply board Transformer board
Input
board
Parallel data bus
Flash
EPROM
CPU
EIA(RS)232 Front comms port
Parallel test port
Current & voltage inputs
Digital inputs
Power
supply
Rear EIA(RS)485
communication port
Output relay contacts
ADC
Output relays
Opto-isolated
inputs
Analogue input signals
Power supply (3 voltages),
rear comms data
Digital input values
Power supply, rear comms
data, output relay status
Timing data
Watchdog
contacts
Field
voltage
P0126ENd
Default settings & parameters,
language text, software code.
Present values of all settings.
Front LCD panel
LEDs
Alarm, event, fault,
disturbance &
maintenance
records
Battery
backed-up
SRAM
Executable software
code & data, setting
database data
SRAM
Ethernet comms
2nd rear comms port EIA(RS)485
optional
Fibre optic rear comms port
optional
IRIG-B and/or 2nd rear comms board
(where fitted)
IRIG-B and/or FO rear port, or
IRIG-B signal
optional
Ethernet board
(where fitted)
Comms between
main & coprocessor
boards
CPU code
& data
FPGA
CPU
SRAM
Coprocessor board
(where fitted)
Serial data bus
(sample data)
FD
Figure 1 Relay modules and information flow