Sel SEL-787 - Table 7.24 IRI Command; Table 7.25 LDP Commands

7.29
Date Code 20150130 Instruction Manual SEL-787 Relay
Communications
SEL ASCII Protocol and Commands
IRI Command
Use the IRI command to direct the relay to read the demodulated IRIG-B time
code at the serial port or IRIG-B input (see Table 7.24).
To force the relay to synchronize to IRIG-B, enter the following command:
If the relay successfully synchronizes to IRIG-B, it sends the following header
and access level prompt:
If no IRIG-B code is present at the serial port input or if the code cannot be
read successfully, the relay responds with
IRIG-B DATA ERROR.
If an IRIG-B signal is present, the relay synchronizes its internal clock with
IRIG-B. It is not necessary to issue the IRI command to synchronize the relay
clock with IRIG-B. Use the IRI command to determine if the relay is properly
reading the IRIG-B signal.
LDP Command (Load Profile Report)
Use the LDP commands (see Table 7.25 and Table 7.26) to view and manage
the Load Profile report (see Figure 5.15). If there is no stored data and an LDP
command is issued, the relay responds with
No data available.
Table 7.24 IRI Command
Command Description Access Level
IRI Force synchronization of internal control clock to
IRIG-B time-code input.
1
=>IRI <Enter>
SEL-787 Date: 12/10/2007 Time: 08:56:03.190
TRNSFRMR RELAY Time Source: External
=>
Table 7.25 LDP Commands
Command Description Access Level
LDP row1 row2
LDP date1 date2
Use the LDP command to display a numeric
progression of all load profile report rows. Use
the LDP command with parameters to display a
numeric or reverse numeric subset of the load
profile rows.
1
LDP C Use this command to clear the load profile
report from nonvolatile memory.
1