LEQ (Less Than or Equal To) Ladder Logic Instruction
The Less Than or Equal To instruction is a ladder logic rung input instruction that compares two values. If Source A is less than or …
PLC Programming Instruction
LBL (Jump to Label) Ladder Logic Instruction
The Label instruction is used in conjunction with a Jump instruction. When the JMP instruction is enabled, the code between the JMP and LBL instruction …
JSR, SBR, RET Jump To Subroutine & Return Ladder Logic Instructions
JSR Definition The JSR instruction is a ladder logic rung output instruction. When the instruction is scanned program execution jumps to the subroutine named in …
JMP (Jump to Label) Ladder Logic Instruction
The JMP instruction is used in conjunction with a LBL Label instruction. When the JMP instruction is enabled the code between the JMP and LBL …
IOT (Immediate Output) Ladder Logic Instruction
The IOT instruction is a ladder logic output instruction that updates output data immediately rather than waiting for the RPI of the module or tag …
GRT (Greater Than) Ladder Logic Instruction
The Greater Than instruction is a ladder logic rung input instruction that compares two values. If Source A is greater than Source B the logic …
GEQ (Greater Than or Equal To) Ladder Logic Instruction
The Greater Than or Equal To instruction is a ladder logic rung input instruction that compares two values. If Source A is greater than or …
FSC(File Search & Compare) Ladder Logic Instruction
The FSC instruction is a ladder logic rung output instruction that compares data in an array, element by element. The instruction uses a Control data …
FRD (From Binary-Coded Decimal BCD) Ladder Logic Instruction
The FRD instruction is a ladder logic rung output instruction that takes a binary coded decimal value from the Source and places the decimal equivalent …
FOR Ladder Logic Instruction
Use the For instruction to scan a Ladder routine repeatedly. The For instruction is handy for populating elements in arrays as an example. The instruction …