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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
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