RAD (Degrees To Radians) Ladder Logic Instruction

The Radians instruction is a ladder logic rung output instruction that converts the Source from degrees to radians and places the value in the Destination. The instruction is enabled when the preceding logic is true and disabled otherwise. The values can be constants, tags or any combination. The following formula is used:    Source * π/180 … Read more

OTL and OTU (Output Latch & Output Unlatch) Ladder Logic Instructions

Ladder logic output instructions which write bit data referenced by an associated tag. The OTL instruction sets the referenced bit while the OTU instruction clears the bit. These instructions are used in pairs, meaning both instructions will reference the same tag. List of arguments BOOL TAG Important Note: The data referenced by the tag is not … Read more

OTE (Output Energize) Ladder Logic Instruction

Ladder logic output instruction that writes bit data referenced by an associated tag. The instruction sets the referenced bit to 1 if the preceding logic is true and 0 if false. List of arguments BOOL TAG

OSR (One Shot Rising) Ladder Logic Instruction

Ladder logic output instruction that writes bit data to a referenced Storage Bit and an Output Bit. The Output Bit is set or cleared depending on the Storage Bit. The instruction sets the Storage Bit if the preceding logic is true and clears it when false. The Output Bit is set for one program scan … Read more

OSF (One Shot Falling) Ladder Logic Instruction

Ladder logic output instruction that writes bit data to a referenced Storage Bit and an Output Bit. The Output Bit is set or cleared depending on the Storage Bit. The instruction sets the Storage Bit if the preceding logic is true and clears it when false. The Output Bit is set for one program scan … Read more

OR (Bitwise OR) Ladder Logic Instruction

The Bitwise OR instruction is a ladder logic rung output instruction that performs an OR operation on Source A and Source B and places the result in the Destination tag. The instruction is enabled when the preceding logic is true and disabled otherwise. The values can be constants, tags or any combination. OR truth table … Read more

ONS (One Shot) Ladder Logic Instruction

Ladder logic output instruction that writes bit data referenced by an associated tag. The instruction sets the referenced bit if the preceding logic is true and clears it if false. Logic to the right of the One Shot will execute for one program scan. List of arguments BOOL TAG Important Note: Do not reference a Boolean … Read more

NOT (Bitwise NOT) Ladder Logic Instruction

The Bitwise NOT instruction is a ladder logic rung output instruction that performs a NOT operation on Source the result in the Destination tag. The instruction swaps the value bit by bit, Ones become zeros and zeros become ones. The instruction is enabled when the preceding logic is true and disabled otherwise. The values can … Read more

NOP (No Operation Instruction) Ladder Logic Instruction

The NOP is a ladder logic rung instruction that does nothing. Place it anywhere on a rung or branch and it will do nothing. Have fun with it. Use it as a placeholder for a search. It can be used in place of an output instruction just in case you want your logic to do … Read more

NEG (Negate) Ladder Logic Instruction

The Negate instruction is a ladder logic rung output instruction that changes the sign of the Source value and places the result in the Destination tag. The instruction is enabled when the preceding logic is true and disabled otherwise. The values can be constants, tags or any combination. To negate values is to change the … Read more