480
Cycle Time Section 7-3
Execution times for most instructions depend on whether they are executed
with an ON or an OFF execution condition. Exceptions are the ladder diagram
instructions OUT and OUT NOT, which require the same time regardless of
the execution condition. The OFF execution time for an instruction can also
vary depending on the circumstances, i.e., whether it is in an interlocked pro-
gram section and the execution condition for IL is OFF, whether it is between
JMP(04) and JME(05) and the execution condition for JMP(04) is OFF, or
whether it is reset by an OFF execution condition. “RSET,” “IL,” and “JMP” are
used to indicate these three times.
Basic Instructions
Special Instructions
Code Mnemonic ON execution
time (µs)
Conditions (Top: min.; bottom: max.) OFF execution time (µs)
RSET IL JMP
---
---
---
---
---
---
---
---
LD
LD NOT
AND
AND NOT
OR
OR NOT
AND LD
OR LD
0.375 Any ---
---
---
---
OUT
OUT NOT
0.563 Without direct outputs or for operands other than
IR 10000 to IR 11515 when direct outputs are
used.
---
---
---
SET
RSET
0.938 Direct outputs ---
--- TIM 1.125 Constant for SV 1.125 1.125 1.125
*DM for SV 40.8 1.125 1.125
--- CNT 1.125 Constant for SV 1.125 1.125 1.125
*DM for SV 38.7 1.125 1.125
Code Mnemonic ON execution
time (µs)
Conditions (Top: min.; bottom: max.) OFF execution time (µs)
00 NOP 0.375 Any ---
01 END 28.0 ---
02 IL 9.3 8.2
03 ILC 8.5 8.5
04 JMP 13.8 8.9
05 JME 8.3 8.3
06 FAL 42.6 1.125
07 FALS 3.0 1.125
08 STEP 43.7 1.125
09 SNXT 18.8 1.125
10 SFT Reset IL JMP
33.2 With 1-word shift register 32.4 11.5 11.5
58.3 With 10-word shift register 52.0 11.5 11.5
311.4 With 100-word shift register 241.0 11.5 11.5
11 KEEP 0.563 Without direct outputs or for operands other than
IR 10000 to IR 11515 when direct outputs are
used.
---
0.938 Direct outputs using IR 10000 to IR 11515
12 CNTR Reset IL JMP
39.8 Constant for SV 25.0 15.5 15.5
59.7 *DM for SV
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