Appendix B - Settings and Signals
ORDINAL SIGNAL NAME ELEMENT NAME
DESCRIPTION
possible for them to fail to resolve this in which case they produce the DDB_CONFIGURATION_ERROR alarm
DDB_RE_CONFIGURATION_ERROR
Indicates that RESTORE or RECONFIGURE or CONFIGURE operations have failed
Maximum Propagation Delay Alarm
DDB_TEST_MODE_CDIFF_INHIBIT
Cdiff Inhibit from Test Mode
Protection disabled - typically out of service due to test mode
Triggers user alarm 1 message to be alarmed on LCD display (self-resetting)
Triggers user alarm 2 message to be alarmed on LCD display (self-resetting)
Triggers user alarm 3 message to be alarmed on LCD display (self-resetting)
Triggers user alarm 4 message to be alarmed on LCD display (self-resetting)
Triggers user alarm 5 message to be alarmed on LCD display (manual-resetting)
Triggers user alarm 6 message to be alarmed on LCD display (manual-resetting)
Triggers user alarm 7 message to be alarmed on LCD display (manual-resetting)
Triggers user alarm 8 message to be alarmed on LCD display (manual-resetting)
Front panel miniature battery failure - either battery removed from slot, or low voltage
Comm2 hardware failure - second rear communications board
The IED is not subscribed to a publishing IED in the current scheme
Ethernet board not fitted
Ethernet board not responding
Ethernet board unrecoverable error
DDB_INVALID_NIC_TCPIP_CONFIG
DDB_INVALID_NIC_OSI_CONFIG
Ethernet board software not compatible with main CPU
DDB_NIC_IP_ADDRESS_CONFLICT
The IP address of the IED is already used by another IED
EIA(RS)232 InterMiCOM indication that Loopback testing is in progress
EIA(RS)232 InterMiCOM Message Failure alarm. Setting that is used to alarm for poor channel quality. If during the fixed 1.6 s rolling window
the ratio of invalid messages to the total number of messages that should be received (based upon the ‘Baud Rate’ setting) exceeds the
above threshold, a ‘Message Fail’ alarm will be issued
EIA(RS)232 InterMiCOM Data Channel Detect Fail i.e. modem failure