Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 311)

Reference
Programming Reference
B–23
Mnemonic
False Execution
Time (approx.
µ
seconds)
True Execution
Time (approx.
µ
seconds)
Memory Usage
(user words)
Name Instruction Type
MSG 26 180
➀➁
34.75 Message Communication
MUL 6.78 57.96 1.50 Multiply Math
MVM 6.78 33.28 1.50 Masked Move Data Handling
NEG 6.78 29.48 1.50 Negate Data Handling
NEQ 6.60 21.52 1.50 Not Equal Comparison
NOT 6.78 28.21 1.00 Not Data Handling
OR 6.78 33.68 1.50 Or Data Handling
OSR 11.48 13.02 1.00 One-Shot Rising Basic
OTE 4.43 4.43 0.75 Output Energize Basic
OTE (high-speed
counter)
7.00 12.00 0.75
Update
High-Speed
Counter Image
Accumulator
High-Speed
Counter
OTL 3.16 4.97 0.75 Output Latch Basic
OTU 3.16 4.97 0.75 Output Unlatch Basic
RAC 6.00 56.00 1.00
High-Speed
Counter Reset
Accumulator
High-Speed
Counter
RES
(timer/counter)
4.25 15.19 1.00 Reset Basic
RES (high-speed
counter)
6.00 51.00 1.00
High-Speed
Counter Reset High-Speed
Counter
RET 3.16 31.11 0.50
Return from
Subroutine Program Flow
Control
RTO 27.49 38.34 1.00 Retentive Timer Basic
SBR 0.99 1.45 0.50 Subroutine
Program Flow
Control
SCL 6.78 169.18 1.75 Scale Data Math
SQC 27.40 60.52 2.00
Sequencer
Compare Application
Specific
➀
This only includes the amount of time needed to set up the operation requested. It does not include the time it takes to
service the actual communication, as this time varies with each network configuration. As an example, 144ms is the actual
communication service time for the following configuration: 3 nodes on DH-485 (2=MicroLogix 1000 programmable
controllers and 1=PLC-500 A.I. Series
t programming software), running at 19.2K baud, with 2 words per transfer.
➁ Add 7.3
µ
seconds per word for MSG instructions that perform writes.