Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 312)

Preface MicroLogix 1000 Programmable Controllers User Manual
B–24
Mnemonic
False Execution
Time (approx.
µ
seconds)
True Execution
Time (approx.
µ
seconds)
Memory Usage
(user words)
Name Instruction Type
SQL 28.12 53.41 2.00 Sequencer Load
Application
Specific
SQO 27.40 60.52 2.00 Sequencer Output
Application
Specific
SQR 6.78 71.25 1.25 Square Root Math
STD 3.16 6.69 0.50
Selectable Timer
Interrupt Disable Application
Specific
STE 3.16 10.13 0.50
Selectable Timer
Interrupt Enable Application
Specific
STS 6.78 24.59 1.25
Selectable Timer
Interrupt Start Application
Specific
SUB 6.78 33.52 1.50 Subtract Math
SUS 7.87 10.85 1.50 Suspend
Program Flow
Control
TND 3.16 7.78 0.50 Temporary End
Program Flow
Control
TOD 6.78 49.64 1.00 Convert to BCD Data Handling
TOF 31.65 39.42 1.00 Timer Off-Delay Basic
TON 30.38 38.34 1.00 Timer On-Delay Basic
XIC 1.72 1.54 0.75 Examine If Closed Basic
XIO 1.72 1.54 0.75 Examine If Open Basic
XOR 6.92 33.64 1.50 Exclusive Or Data Handling
User Interrupt Latency
The user interrupt latency is the maximum time from when an interrupt condition
occurs (e.g., STI expires or HSC preset is reached) to when the user interrupt
subroutine begins executing (assumes that there are no other interrupt conditions
present).
If you are communicating with the controller, the maximum user interrupt latency is
872
µ
s. If you are not communicating with the controller, the maximum user
interrupt latency is 838
µ
s.