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1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
5.1.1.6.
General functions
The general function blocks are documented on the CD-ROM
“Technical
Descriptions of Functions” (refer to “Related documents” on page 9).
5.1.1.7.
Standard functions
Standard functions are used for logics, such as interlocking, alarming and control
sequencing. The use of logic functions is not limited and the functions can be
interconnected with each other as well as with protection, measurement, power
quality, control, condition monitoring and general functions. In addition, the digital
inputs and outputs as well as LON inputs and outputs can be connected to standard
functions by using the Relay Configuration Tool.
The standard function blocks are documented on the CD-ROM “Technical
descriptions of Functions” (refer to “Related documents” on page 9).
Table 5.1.1.6-1
General functions available for the RET 54_
Function
Description
INDRESET
Resetting of operation indicators, latched output signals, registers
and waveforms i.e. the disturbance recorder
MMIWAKE
Activation of HMI backlight
SWGRP1
Switchgroup SWGRP1
SWGRP2
Switchgroup SWGRP2
SWGRP3
Switchgroup SWGRP3
......
SWGRP20
Switchgroup SWGRP20
Table 5.1.1.7-1
Standard functions available for the RET 54_
Function
Description
ABS
Absolute value
ACOS
Principal arc cosine
ADD
Extensible adder
AND
Extensible AND connection
ASIN
Principal arc sine
ATAN
Principal arc tangent
BCD2INT
Type conversion from BCD coded input to SINT (Tap changer)
BITGET
Get one bit
BITSET
Set one bit
BOOL_TO_*
Type conversion from BOOL to WORD / USINT / UINT / UDINT / SINT
/ REAL / INT / DWORD / DINT / BYTE
BOOL2INT
Type conversion from BOOL inputs to INT output
BYTE_TO_*
Type conversion from BYTE to WORD / DWORD
COMH
Hysteresis comparator
COS
Cosine in radians
CTD
Down-counter
CTUD
Up-down counter
CTU
Up-counter
DATE_TO_UDINT
Type conversion from DATE to UDINT
DINT_TO_*
Type conversion from DINT to SINT / REAL / INT
DIV
Divider
DWORD_TO_*
Type conversion from DWORD to WORD / BYTE
EQ
Extensible comparison to equal