The XPY instruction is a ladder logic rung output instruction that takes the Source X to the power of Source Y and places the result 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. Example: X to the power … Read more
The Bitwise XOR instruction is a ladder logic rung output instruction that performs an XOR 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. XOR truth table … Read more
Ladder logic input instruction that evaluates bit data referenced by an associated tag. The instruction output is true if the value is 0 and false if the value is 1. List of arguments: BOOL TAG
Ladder logic input instruction that evaluates bit data referenced by an associated tag. The instruction output is true if the value is 1 and false if the value is 0. List of arguments: BOOL TAG
The (UIE) User Interrupt Enable instruction is used in conjunction with a (UID) User Interrupt Disable instruction. When enabled, the UID instruction prevents tasks with higher priority from interrupting the execution of the current task. The UIE instruction enables other tasks to interrupt the current task. The task fault routine and the Controller fault handler are not … Read more
The (UID) User Interrupt Disable instruction is used in conjunction with a (UIE) User Interrupt Enable instruction. When enabled, the UID instruction prevents tasks with higher priority from interrupting the current task. The UIE instruction allows other tasks to interrupt the current task. The task fault routine and the Controller fault handler are not disabled by the UID instruction. … Read more
The Truncate instruction removes the fractional part of a number stored in a Real data type and places the truncated value in the destination. The Source data remains unchanged Example Source data = 357.06 Destination data = 357 (After truncate) List of possible arguments SOURCE can be one of the following data types. … Read more
The Timer Off instruction is a non-retentive timer that is enabled when the preceding logic is false. The timer is reset when the preceding logic is true. The timer can be compared to a stop watch. A value is entered into the preset and an accumulator keeps track of the time. When the accumulator reaches … Read more
The TOD instruction is a ladder logic rung output instruction that takes decimal value from the Source and places the Binary-Coded Decimal equivalent 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. In BCD each byte represents a decimal … Read more
The Temporary End ladder instruction is intended for debugging and troubleshooting. The instruction can be placed on a rung before the end of a routine. Logic before the TND instruction is scanned normally and logic after the instruction is skipped. Note: Great instruction for debugging code line by line or block by block.