Ladder Diagram Safety Instructions

Returns the value of X to the power of Y.

Compute the natural log of a number.

Compute the log base 10 of a number.

Calculate the mean/average over a set of values.

Copy binary data from one tag to another (no type conversion).

When you use the COP instruction in a safety routine, you must verify that the length is a constant and that the source and destination length are the same.

Perform copy, arithmetic, logic, and function operations on data that is stored in an array.

Fill the elements of an array with the source value, while leaving the source value unchanged.

Compare the values in an array, element by element.

Find the size of a dimension of an array.

Calculate the standard deviation over a set of values.

Shifts the specified number of bits to the left.

Shifts the specified number of bits to the right.

Store a value into an array by using first-in/first-out semantics.

Retrieve a value from an array by using last-in/first-out semantics.

Store a value into an array by using last-in/first-out semantics.

Retrieve a value from an array by using last-in/first-out semantics.

Allows an event to occur one time on false-to-true edge of rung state.

Sets an output bit for one scan on the false-to-true (rising) edge of rung state.

Sets an output bit for one scan on the true-to-false (falling) edge of rung state.

Controls a bit (it performs both Set and Clear operations that are based on rung state).

Set a bit (retentive).

Clear bit (retentive).

Examines the data bit to set or clear the rung condition.

Examines the data bit to set or clear the rung condition.

Count down.

Count up.

Reset a timer or counter.

Accumulate time.

Time how long a timer is disabled.

Time how long a timer is enabled.

Test whether two values are equal.

Perform a comparison on the arithmetic operations that you specify in the expression.

Test whether one value is greater than or equal to a second value.

Test whether one value is greater than a second value.

Test whether one value is less than or equal to a second value.

Test whether one value is less than a second value.

Test whether a value falls within a specified range.

Pass source and compare values through a mask and test whether they are equal.

Test whether one value is not equal to a second value.

Perform bitwise AND operation.

Clear a value.

Copy a value.

Copy a specific part of an integer.

Perform bitwise NOT operation.

Perform bitwise OR operation.

Rearrange the bytes of a value.

Perform bitwise exclusive OR operation.

Forces a rung to false (rung continues to execute).

Triggers one execution of an event task.

Scan of logic jumps to a labeled location within the same routine.

Jump to a separate routine.

Identifies a target location for a JMP instruction.

Forces every rung in a section of logic to execute in the False state.

Insert a placeholder in the logic.

Return the results of a subroutine.

Accept data that the JSR instruction passes to a subroutine.

Mark a temporary end that halts routine execution.

Controls and monitors redundant outputs.

Monitors dual-input safety devices.

Monitors dual-input safety devices whose main purpose is to provide a stop function, such as an E-stop, light curtain, or gate switch.

Monitors dual-input safety devices whose main purpose is to provide a stop function, such as an E-stop, light curtain, or gate switch. It includes the added capability to initiate a functional test of the stop device. It can monitor a feedback signal from a safety device and issue a lock request to a safety device.

Indicates whether the safety mat is occupied.

Take the absolute value of a value.

Add two values.

Perform the arithmetic operation that is defined in the expression.

Divide two values.

Determine the remainder after one value is divided by a second value.

Multiply two values.

Take the opposite sign of a value.

Calculate the square root of a value.

Subtract two values.

Compute the arc-cosine of a number.

Compute the arc-sine of a number.

Compute the arc tangent in radians of y/x based on the sign of a value to determine the correct quadrant.

Compute the arc tangent in radians of y/x based on the signs of both values to determine the correct quadrant.

Compute the cosine of a number.

Compute the sin of a number.

Compute the tangent of a number.

Convert radians into degrees.

Convert the BCD value to an integer value.

Convert degrees into radians.

Convert the integer value to a BCD value.

Remove the fractional part of a value.