Set-Reset Function Block Srmemoryqt - Hitachi Relion 650 Series Technical Manual
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Section 11
Logic
11.1.2.8
Set-reset function block SRMEMORYQT
Identification
Function description
Set/reset logic component
Functionality
The Set-reset function (SRMEMORYQT) is a flip-flop with memory that can set or reset an output
from two inputs respectively. Each SRMEMORYQT function block has two outputs, where one is
inverted. The memory setting controls if the flip-flop after a power interruption will return the state it
had before or if it will be reset. In SRMEMORYQT, the SET input has priority over the RESET input.
SRMEMORYQT propagates quality and time as well as value.
Table 122: Truth table for SRMEMORYQT function block
SET
0
0
1
1
If Memory parameter is On, the output result is stored in semi-retained memory.
Function block
SET
RESET
IEC09000301 V1 EN-US
Figure 68:
Signals
Table 123: SRMEMORYQT Input signals
Name
SET
RESET
Table 124: SRMEMORYQT Output signals
Name
OUT
NOUT
130
RESET
OUT
NOUT
0
Last
Inverted
value
last value
1
0
1
0
1
0
1
1
0
SRMEMORYQT
OUT
NOUT
IEC09000301-1-en.vsd
SRMEMORYQT function block
Type
Default
BOOLEAN
BOOLEAN
Type
BOOLEAN
BOOLEAN
© 2021 Hitachi Energy. All rights reserved.
IEC 61850
IEC 60617
identification
identification
SRMEMORYQT
Description
0
Input signal to set
0
Input signal to reset
Description
Output signal
Inverted output signal
1MRK 511 557-UEN Rev. A
GUID-99C4F0EC-AEFF-4B69-B0FE-44159DFCCF00 v1
ANSI/IEEE C37.2
device number
-
-
GUID-39060D4B-9AA7-4505-9487-88B2CBC534F0 v3.1.1
GUID-C49281AE-3667-42C7-9168-F8DC31970FE7 v2
PID-1082-INPUTSIGNALS v15
PID-1082-OUTPUTSIGNALS v15
Technical Manual
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