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1.5
Date Code 20081022
Instruction Manual
SEL-787 Relay
Introduction and Specifications
Getting Started
Establishing
Communication
The SEL-787 base model has two EIA-232 serial communications ports. The
following steps require PC terminal emulation software and an SEL Cable
C234A (or equivalent) to connect the SEL-787 to the PC. See
for further information on serial communications
connections and the required cable pinout.
Step 1. Connect the PC and the SEL-787 using the serial
communications cable.
Step 2. Apply power to both the PC and the relay.
Step 3. Start the PC terminal emulation program.
Step 4. Set the PC terminal emulation program to the communications
port settings listed in the Default Value column of
.
Also, set the terminal program to emulate either VT100 or
VT52 terminals.
Step 5. Press the
<Enter>
key on the PC keyboard to check the
communications link.
You will see the
=
prompt at the left side of the computer
screen.
If you do not see the
=
prompt, check the cable connections,
and confirm that the settings in the terminal emulation program
are the default values in
Step 6. Type
QUIT <Enter>
to view the relay response header.
You will see a computer screen display similar to
. If
you see jumbled characters, change the terminal emulation type
in the PC terminal emulation program.
Step 7. Type
ACC <Enter>
and the appropriate password (see
for factory default passwords) to go to Access
Level 1.
=>
QUIT <Enter>
Transformer xyz Date: 03/10/2008 Time: 10:31:43
Station 1
Time Source: Internal
Figure 1.1
Response Header
Table 1.1
SEL-787 Serial Port Settings
Description
Setting Label
Default Value
SPEED
SPEED
9600
DATA BITS
BITS
8
PARITY
PARITY
N
STOP BITS
STOP
1
PORT TIMEOUT
T_OUT
5
HWDR HANDSHAKING
RTSCTS
N
Содержание SEL-787
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