Schweitzer Engineering Laboratories SEL-701-1, Instruction Manual

Page: 153 / 452

Date Code 20011009
SEL-701-1 Monitor
ASCII Serial Port Operation
Command Explanations
5.11
ACC & 2AC (Go to Access Level 1 or 2)
The ACC and 2AC commands provide entry to the multiple access levels.
Different commands are available at the different access levels as shown in Table 5.4
on page 5.8 . Commands ACC and 2AC are explained together because they operate
similarly.
ACC moves from Access Level 2 to Access Level 1.
2AC moves from Access Level 1 to Access Level 2.
See PASSWORD (Level 2) on page 5.20 for more information on passwords.
The factory default password for Access Level 2 is 701.
The monitor closes the ALARM b-contact for one second after a successful Level
2 access. If you make three incorrect password guesses, access is denied and the
ALARM contact closes for one second.
Figure 5.4 shows an example 2AC command
execution.
=> 2AC
Password: ? 701@@@
SEL-701-1 Date: 08/15/2001 Time: 11:01:59.467
MONITOR
Level 2
=>>
Figure 5.4 2AC Command Example.
ANALOG (Level 2)
Use the ANALOG p t command to test the monitor analog current output. When
you use the ANALOG command, the monitor ends normal analog current output and
sends a signal defined by the percentage value, p = 0%–100% for t minutes (t = 1–10
minutes). For example, when the analog output signal type is 4–20 mA, the command
ANA 75 5.5 instructs the monitor to output 16 mA (75% of full scale) for 5.5 minutes
or until any character or space key is pressed to end the test. Figure 5.5 shows an
example ANA command execution.
=>> ANA 75 5.5
Outputing 16.00mA to Analog Output Port for 5.5 minutes.
Press any key to end test
Analog Output Port Test Completed.
=>>
Figure 5.5 ANA Command Example.