Allen-Bradley GuardLogix 5580 Original Instructions Manual page 71

Table 8 - Ladder Diagram Safety Instructions (Continued)
Type Mnemonic
TON
TOF
RTO
Timer
CTU
CTD
RES
(2)
CMP
EQU
GEQ
GRT
LEQ
Compare
LES
MEQ
NEQ
LIM
CLR
MOV
Move
MVM
SWPB
AND
NOT
Logical
OR
XOR
JMP
LBL
JSR
RET
SBR
Program
Control
TND
MCR
AFI
NOP
(3)
EVENT
ADD
(2)
CPT
SUB
MUL
Math/
DIV
Compute
MOD
SQR
NEG
ABS
(4)
GSV
I/O
(4)
SSV
(1) When using the COP instruction in a safety routine, you must verify that the length operand is a constant and that the source and destination length are the same.
(2) Advanced operands like SIN, COS, and TAN are not supported in safety routines.
(3) The event instruction triggers a scan of the standard task.
(4) For special considerations when using the GSV and SSV instructions, see the ControlLogix 5580 and GuardLogix 5580 Controllers User Manual, publication 1756-UM543, or the CompactLogix 5380 and
Compact GuardLogix 5380 User Manual, publication 5069-UM001.
Name Purpose
Timer On Delay Time how long a timer is enabled.
Timer Off Delay Time how long a timer is disabled.
Retentive Timer On Accumulate time.
Count Up Count up.
Count Down Count down.
Reset Reset a timer or counter.
Compare Perform a comparison on the arithmetic operations you specify in the expression.
Equal To Test whether two values are equal.
Greater Than Or Equal To Test whether one value is greater than or equal to a second value.
Greater Than Test whether one value is greater than a second value.
Less Than Or Equal To Test whether one value is less than or equal to a second value.
Less Than Test whether one value is less than a second value.
Masked Comparison for Pass source and compare values through a mask and test whether they are equal.
Equal
Not Equal To Test whether one value is not equal to a second value.
Limit Test Test whether a value falls within a specified range.
Clear Clear a value.
Move Copy a value.
Masked Move Copy a specific part of an integer.
Swap Byte Rearrange the bytes of a value.
Bitwise AND Perform bitwise AND operation.
Bitwise NOT Perform bitwise NOT operation.
Bitwise OR Perform bitwise OR operation.
Bitwise Exclusive OR Perform bitwise exclusive OR operation.
Jump To Label Scan of logic jumps to a labeled location within the same routine.
Label Identifies a target location for a JMP instruction.
Jump to Subroutine Jump to a separate routine.
Return Return the results of a subroutine.
Subroutine Accept data that is passed to a subroutine by the JSR instruction.
Temporary End Mark a temporary end that halts routine execution.
Master Control Reset Forces every rung in a section of logic to execute in the False state.
Always False Instruction Forces a rung to false (rung continues to execute).
No Operation Insert a placeholder in the logic.
Trigger Event Task Trigger one execution of an event task.
Add Add two values.
Compute Perform the arithmetic operation that is defined in the expression.
Subtract Subtract two values.
Multiply Multiply two values.
Divide Divide two values.
Modulo Determine the remainder after one value is divided by a second value.
Square Root Calculate the square root of a value.
Negate Take the opposite sign of a value.
Absolute Value Take the absolute value of a value.
Get System Value Get controller status information.
Set System Value Set controller status information.
Rockwell Automation Publication 1756-RM012B-EN-P - April 2018
Safety Instructions Appendix A
71