5.7
Date Code 20110408 Instruction Manual SEL-551 Relay
Serial Port Communications and Commands
Serial Port Automatic Messages
Serial Port Automatic Messages
When the serial port AUTO setting is Y, the relay sends automatic messages to
indicate specific conditions. The automatic messages are described in
Table 5.3.
PROTOCOL = LMD
Port Protocol PROTOCOL SEL, LMD, MOD LMD
LMD Prefix PREFIX @, #, $, %, & @
LMD Address ADDRESS 1–99 1
LMD Settling Time SETTLE_TIME 0–30 seconds 0
Baud Rate SPEED 300, 1200, 2400, 4800, 9600, 19200, 38400 2400
Number Data Bits DATA_BITS 7, 8 8
Parity PARITY O, E, N (O = Odd, E = Even, N = None) N
Stop Bits STOP 1, 2 1
Timeout TIMEOUT 0–30 minutes 15
Automatic Message Output AUTO Y or N N
Fast Operate Enable FAST_OP Y or N N
PROTOCOL = MOD
Port Protocol PROTOCOL SEL, LMD, MOD MOD
Baud Rate SPEED 300, 1200, 2400, 4800, 9600, 19200 2400
Parity PARITY O, E, N (O = Odd, E = Even, N = None) N
Stop Bits STOP 1, 2 1
Modbus Slave ID SLAVEID 1–247 1
Table 5.2 Communications Settings (Sheet 2 of 2)
Field Description Screen Name Range Default
Table 5.3 Serial Port Automatic Messages
Condition Description
Power-Up The relay sends a message containing the present date and time,
Relay and Terminal Identifiers, and the Access Level 0 prompt
when the relay is turned on.
Event Trigger The relay sends an event summary each time an event report
is triggered. See Section 7: Standard Event Reports and SER.
Self-Test Warning
or Failure
The relay sends a status report each time a self-test warning or fail-
ure condition is detected. See STA Command (Status) on page 5.18.
To Next Page
Loading...
