Schweitzer Engineering Laboratories SEL-2020, Instruction Manual, Page: 285 / 470

Date Code 20010518 Database 9-11
SEL-2020 Instruction Manual
Table 9.5: Local Data Region (continued)
Starting
Address
Data Item Label
Data
Type Notes
089Bh FAULT_TYPE char[10] ASCII string describing most recent fault
type. Applies only when User-Defined
Commands (SET U) include CMDn =
20EVENT or CMDn = 20EVENTQ.
08A5h UNSOL_WRT int Number of Unsolicited Write messages
received since last reset. Resets when count
exceeds 65535, port reset, Status command
execution or UW_TIME reset; read-only.
08A6h UW_FAIL int Number of failed Unsolicited Write
messages received since last reset. Resets
when UNSOL_WRT or UW_TIME resets;
read-only.
Note: The UW_FAIL register represents the
total number of message failures. Additional
detail is reported when the UW_FAIL
register is read using the default
SEL-2020/2030 VIEW command (VIEW n
LOCAL, where n represents port number).
Failure counts are itemized and reported
based on the following categories:
•
CRC Fail
•
Address Fail
•
Insufficient Memory
•
Busy
•
General Data Error
08A7h UW_TIME(ms) int[2] Time period since last Unsolicited Write
statistics reset. Use this value to calculate
message success/failure rates. Append two
registers to get 32-bit time; register 08A7h is
high-word, 08A8h is low-word. Resets when
count exceeds 4,294,967,296 (about 50 days)
or UNSOL_WRT reset; read-only.
08A9h UW_MAXTIME(ms) int[2] Maximum time between received
Unsolicited Write messages. Append two
registers to get 32-bit time; register 08A9h is
high-word, 08AAh is low-word. Resets
when UNSOL_WRT or UW_TIME resets.