Sel SEL-421 - Test Fm; DNP Status Bytes; Test Dnp off

R.9.54
SEL-421 Relay Reference Manual Date Code 20111215
ASCII Command Reference
Description of Commands
To force a value, use the TEST DNP type n value1 command. The type is A
for analog inputs, B for binary inputs, or C for counter inputs. The point
number n is based on the active DNP map. The override value value1 is a
value you specify. The point number and override value must be valid for the
given data type (see Section 6: DNP3 Communications).
When you have successfully added a new DNP test value (for example, TEST
DNP A 17 -357), the relay responds,
Override Added.
The relay asserts Relay Word bit TESTDNP while any DNP test data are
present in the relay.
DNP Status Bytes
Whenever a DNP value is overridden and the value is read via DNP, the status
byte for the overridden value indicates that the bit is locally forced to a test
value.
TEST DNP OFF
Use the TEST DNP OFF command to remove override values. The relay
returns the database registers to the pretest values.
When you have successfully removed a DNP test value (for example, TEST
DNP A 17 OFF), the relay responds,
Override Removed. When an attempt to
remove a DNP test value fails, the relay responds,
Override Not Found.
When removing all DNP test values (for example, TEST DNP OFF), the
relay responds,
All Overrides Removed.
TEST FM
The TEST FM command overrides normal Fast Meter quantities for testing
purposes. You can override only “reported” Fast Meter values (per-phase
voltages and currents). For more information on Fast Meter and the SEL-421,
see Section 5: SEL Communications Protocols.
TEST FM
Values you enter in Fast Meter storage are “override values.” Use the TEST
FM command to display override values and write override values in the Fast
Meter report.
Tabl e 9. 14 1 TE ST D N P C omm and
Command Description Access Level
TEST DNP type n
OFF
a
a
Parameter n is a DNP point number; type is A for analog, B for binary, or C for counter inputs.
Clear the override testing value of type type
from the DNP point number n.
B, P, A, O, 2
TEST DNP OFF Clear all override testing values from the DNP
map.
B, P, A, O, 2
Table 9.142 TEST FM Command
Command Description Access Level
TEST FM Display present override values. 1, B, P, A, O, 2
TEST FM label
value1 value2
Write new data value1 and value2 to the Fast
Meter report at the item label label. Parameter
value2 is optional.
B, P, A, O, 2