The GRT, also known as the Greater Than, is an instruction which compares two operands and evaluates if the value stored in “Source A” is greater than the value stored in “Source B”. If that’s the case, the instruction will evaluate to TRUE and allow the rest of the rung to execute. The GRT instruction may take integers, floats or constants as operands.
This is a companion discussion topic for the original entry at https://www.solisplc.com/tutorials/plc-programming-comparison-instructions-grt-greater-than