Set/Reset Function Block Srmemoryqt - ABB RES670 Technical Manual

Section 15
Logic
15.8.9
15.8.9.1
15.8.9.2
456

Set/Reset function block SRMEMORYQT

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, after a power
interruption, the flip-flop resets or returns to the state it had before the power
interruption. The SET input has priority.
SRMEMORYQT can propagate the quality, the value and the time stamps of the
signals via IEC 61850.
Table 319: Truth table for SRMEMORYQT function block
SET RESET OUT
0 0 Last
value
0 1 0
1 0 1
1 1 1
If Memory parameter is Enabled, the output result is stored in semi-retained memory.
Function block
SRMEMORYQT
SET OUT
RESET NOUT
IEC14000070-1-en.vsd
IEC14000070 V1 EN-US
Figure 177: SRMEMORYQT function block
Signals
Table 320: SRMEMORYQT Input signals
Name Type
SET BOOLEAN
RESET BOOLEAN
NOUT
Inverted
last value
1
0
0
Default Description
0 Input signal to set
0 Input signal to reset
Phasor measurement unit RES670 2.2 ANSI
1MRK 511 408-UUS A
GUID-D910BA2D-07FA-44C5-A820-E0413AD7FD91 v2
GUID-39060D4B-9AA7-4505-9487-88B2CBC534F0 v5
GUID-8B04BA86-9685-4E73-9C04-3AE74752CDBF v1
GUID-4543C4C9-FAE2-4328-8DE2-4A5756A020E9 v1
PID-3814-INPUTSIGNALS v5
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