Sel SEL-787 - Page 304

7.16
SEL-787 Relay Instruction Manual Date Code 20150130
Communications
SEL ASCII Protocol and Commands
The ACC command takes the SEL-787 to Access Level 1. See Access
Commands (ACCESS, 2ACCESS, and CAL) on page 7.18 for more detail.
Access Level 1
When the SEL-787 is in Access Level 1, the relay sends the following prompt:
See the SEL-787 Relay Command Summary at the end of this manual for the
commands available from Access Level 1. The relay can go to Access Level 2
from this level.
The 2AC command places the relay in Access Level 2. See Access Commands
(ACCESS, 2ACCESS, and CAL) for more detail. Enter the 2AC command at
the Access Level 1 prompt:
Access Level 2
When the relay is in Access Level 2, the SEL-787 sends the prompt:
See the SEL-787 Relay Command Summary at the end of this manual for the
commands available from Access Level 2.
Any of the Access Level 1 commands are also available in Access Level 2.
Access Level C
The CAL access level is used exclusively by the SEL factory and SEL field
service personnel to diagnose troublesome installations. A list of CAL level
commands is available from SEL upon request. Do not enter the CAL access
level, except as directed by SEL.
The CAL command allows the relay to go to Access Level C. Enter the CAL
command at the Access Level 2 prompt:
Command Summary
The SEL-787 Relay Command Summary at the end of this manual lists the
serial port commands alphabetically. Much of the information available from
the serial port commands is also available via the front-panel pushbuttons.
=ACC <Enter>
=>
=>2AC <Enter>
=>>
=>>CAL <Enter>