C.7
Date Code 20081022
Instruction Manual
SEL-787 Relay
SEL Communications Processors
SEL Communications Processor and Relay Architecture
Figure C.4
Example of SEL Relay and SEL Communications Processor
Configuration
shows the
Port 1
settings for the SEL communications processor.
Data Collection
The SEL communications processor is configured to collect data from the
SEL-787 using the commands listed in
.
Table C.4
SEL Communications Processor Port 1 Settings
Setting
Name
Setting
Description
DEVICE
S
Connected device is an SEL device
CONFIG
Y
Allow autoconfiguration for this device
PORTID
Relay 1
Name of connected relay
a
a
Automatically collected by the SEL communications processor during
autoconfiguration.
BAUD
19200
Channel speed of 19200 bits per second
DATABIT
8
Eight data bits
STOPBIT
1
One stop bit
PARITY
N
No parity
RTS_CTS
N
Hardware flow control enabled
XON_XOFF
Y
Enable XON/XOFF flow control
TIMEOUT
30
Idle timeout that terminates transparent connections of
30 seconds
SEL Communications
Processor
SEL-787 Relay
Personal
Computer
Port F
Port 1
Port 3
Cable C273A
Cable C234A
Table C.5
SEL Communications Processor Data Collection Automessages
Message
Data Collected
20METER
Power system metering data
20DEMAND
Demand metering data
20TARGET
Selected Relay Word bit elements
20HISTORY
History command (ASCII)
20STATUS
Status command (ASCII)
20EVENTS
Standard 4 sample/cycle event report (data with settings)
20EVENT
Standard 4 sample/cycle event report (data only)
Summary of Contents for SEL-787
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