NORD Drivesystems BU0550 - Manual (Page 38)

PLC logic for NORD SK 54xE frequency inverters
38 BU 0550 GB-0813
3.2.5.3 GT
Compares the content of the accumulator with a variable or constant. If the value in the accumulator is
greater than the variable or constant, then the AE is set to TRUE.
BOOL BYTE INT DINT
Possible data types X X X
Commands Explanation
LD Value1 Value1 = 12
GT 8 Is 12 greater than 8?
JMPC NextStep AE = TRUE

Program jumps
ADD 1
NextStep:
ST Value1
Table 43 GT
3.2.5.4 LE
Compares the content of the accumulator with a variable or constant. If the value in the accumulator is less
than or equal to the variable or constant, then the AE is set to TRUE.
BOOL BYTE INT DINT
Possible data types X X X
Commands Explanation
LD Value1 Value1 = 5
LE 10 Is 5 less than or equal to 10?
JMPC NextStep AE = TRUE

Program jumps
ADD 1
NextStep:
ST Value1
Table 44 LE
3.2.5.5 LT
Compares the content of the accumulator with a variable or constant. If the value in the accumulator is less
than the variable or constant, then the AE is set to TRUE.
BOOL BYTE INT DINT
Possible data types X X X
Commands Explanation
LD Value1 Value1 = 12
LT 8 Is 12 less than 8?
JMPC NextStep AE = FALSE

Program does not jump
ADD 1
NextStep:
ST Value1
Table 45 LT