Hitachi 670 Series Application Guide

4.8.3 Binary output signals
GUID-CCD9CE1E-57CA-412D-ADD2-3B19EA52512D v1
PID-6471-OUTPUTSIGNALS v2
Table 6: LDCMRecBinStat1 Output signals
Name Type Description
COMFAIL BOOLEAN Detected error in the differential communication
ADDRERR BOOLEAN Incoming message from non-valid address
CRCERROR BOOLEAN Identified error by CRC check in incoming message
REMBLKDF BOOLEAN Remote terminal indicates diff protection is blocked
NOCARR BOOLEAN No carrier is detected in the incoming message
NOMESS BOOLEAN No start and stop flags identified for the incoming message
LNGTHERR BOOLEAN Wrong length of the incoming message
YBIT BOOLEAN Detected error in remote end with incoming message
LOWLEVEL BOOLEAN Low signal level on the receive link
PID-6472-OUTPUTSIGNALS v2
Table 7: LDCMRecBinStat2 Output signals
Name Type Description
CH1 STRING Remote communication channel 1
CH2 STRING Remote communication channel 2
CH3 STRING Remote communication channel 3
CH4 STRING Remote communication channel 4
COMFAIL BOOLEAN Detected error in the differential communication
COMALM BOOLEAN Delayed alarm signal for communication failure
BLKDIFF BOOLEAN Link error, values are substituted, diff protection is blocked
ADDRERR BOOLEAN Incoming message from non-valid address
RED_ACT BOOLEAN Redundant channel active
CRCERROR BOOLEAN Identified error by CRC check in incoming message
TRDELERR BOOLEAN Transmission time is longer than permitted
SYNCERR BOOLEAN Error in echo synchronization
REMBLKDF BOOLEAN Remote terminal indicates diff protection is blocked
GPSERROR BOOLEAN Problem with GPS synchronization in remote or local end
NOCARR BOOLEAN No carrier is detected in the incoming message
NOMESS BOOLEAN No start and stop flags identified for the incoming message
LNGTHERR BOOLEAN Wrong length of the incoming message
YBIT BOOLEAN Detected error in remote end with incoming message
LOWLEVEL BOOLEAN Low signal level on the receive link
PID-6473-OUTPUTSIGNALS v2
Table 8: LDCMRecBinStat3 Output signals
Name
Type Description
CH1 STRING Remote communication channel 1
CH2 STRING Remote communication channel 2
CH3 STRING Remote communication channel 3
Table continues on next page
1MRK505382-UEN Rev. K Section 4
Analog and binary signal transfer for line differential protection
Communication set-up, 670/650 series 51
Application Guide
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Hitachi 670 Series Specifications

General

Brand	Hitachi
Model	670 Series
Category	Control Unit
Language	English