Rockwell Automation 825-P Modular Protection System for Motors User Manual - Manual (Page 167)

Rockwell Automation Publication 825-UM004D-EN-P - November 2012 167
ASCII Serial Communications Chapter 12
Description of Commands Each command explanation lists:
• Command.
• Serial port access levels where the command is available, in parentheses.
• Explanation of the command use or response.
For example, issue the DATE command from serial port Access Level 1 or 2.
ACC and 2AC (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 99. Commands ACC and 2AC operate similarly:
• ACC command moves the relay from Access Level 0 to Access Level 1 or
Access Level 2 to Access Level 1.
• 2AC command moves the relay from Access Level 1 to Access Level 2.
The relay is shipped from the factory with the Access Level 1 and Access Level 2
passwords disabled. See PASSWORD (Level 1 or 2) on page 170 for
information on Access Level 1 and Access Level 2 password protection.
The relay sets the SALARM Relay Word bit for one second after a successful
move to Access Level 2.
ANALOG (Level 2)
Use the ANALOG p t command to test the relay analog current output. When
you use this command, the relay 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 relay to output 16 mA (75% of full scale) for
5.5 minutes or until a character or space key is pressed to end the test.
You can also use the ANALOG command to generate a current signal that
increases linearly. Replace the fixed percentage value with an R to ramp the signal
from zero to full scale over time. For example, the command ANA R 10 instructs
the relay to ramp the analog signal from zero to full scale, reaching full scale in 10
minutes. Stop the test by pressing a keyboard character key or the space bar.
DATE (Level 1 or 2)
DATE displays the date stored by the internal calendar/clock.