Schweitzer Engineering Laboratories SEL-2020 - Page 289

Date Code 20010518 Database 9-15
SEL-2020 Instruction Manual
Table 9.7: Local Element Definitions
Element Description
CMD1 User-defined command number one received flag.
CMD2 User-defined command number two received flag.
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CMD8 User-defined command number eight received flag.
SBO1 Select-before-operate register one flag. Pulsed by writing AAh then 55h to
register 0819h within 1.0 second of each other.
SBO2 Select-before-operate register two flag. Controlled by register 081Ah.
SBO3 Select-before-operate register three flag. Controlled by register 081Bh.
SBO4 Select-before-operate register four flag. Controlled by register 081Ch.
CTS Follows the state of CTS input.
XOFF Set when port has been disabled by remote device using XOFF character.
INAC Set when port is inactive.
UMB Data present in unsolicited message buffer flag.
D1 Auto-message one trigger.
D2 Auto-message two trigger.
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D12 Auto-message twelve trigger.
ARCH1 Archive one auto-message trigger.
ARCH2 Archive two auto-message trigger.
ARCH3 Archive three auto-message trigger.
MSET Set while Math/Move equations executing.
DLY1 Auto-message one trigger overrun flag.
DLY2 Auto-message two trigger overrun flag.
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DLY12 Auto-message twelve trigger overrun flag.
DLYA1 Archive one auto-message trigger overrun flag.
DLYA2 Archive two auto-message trigger overrun flag.
DLYA3 Archive three trigger overrun flag.
DLY Logical OR of DLY1-12 and DLYA1-3.
BR1 Local latch result which may be associated with Breaker 1.
BR2 Local latch result which may be associated with Breaker 2.
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BR16 Local latch result which may be associated with Breaker 16.