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The overseeing time is fixed at 2.6 ms. A Link Unit is mounted, so the Link
Unit servicing time is 8.0 ms.
The Programming Console is mounted to the PC and the total cycle time, T,
of operations 1, 2, 4, and 5 is greater than 13 ms, so the peripheral device
servicing time is (0.06 x T) ms = (0.06 x 18.5) ms = 1.1 ms.
The program execution time is 4.7 ms (0.94
µ
s/instruction times 5,000
instructions).
The I/O refresh time would be as follows for three 8-point Input Units and
three 8-point Output Units mounted in the CPU Rack, and eight units
mounted in a Slave Rack.
+ 1.3 ms + 8 units x 0.2 ms = 3.2 ms
8 points
(8 points x 3) x 70
µ
s + (8 points x 3) x 40
µ
s
The cycle time is 2.6 ms + 8.0 ms + 1.1 ms + 4.7 ms + 3.2 ms = 19.6 ms.
6-3
Instruction Execution Times
The following table lists the execution times for all instructions that are avail-
able for the C200H. The maximum and minimum execution times and the
conditions which cause them are given where relevant. When “word” is
referred to in the Conditions column, it implies the content of any word except
for indirectly addressed DM words. Indirectly addressed DM words, which
create longer execution times when used, are indicated by “
*
DM”.
Execution times for most instructions depend on whether they are executed
with an ON or an OFF execution condition. Exceptions are the ladder dia-
gram instructions OUT and OUT NOT, which require the same time regard-
less 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 inter-
locked program section and the execution condition for IL is OFF, whether it
is between JMP(04) 00 and JME(05) 00 and the execution condition for
JMP(04) 00 is OFF, or whether it is reset by an OFF execution condition. “R”,
“IL”, and “JMP” are used to indicate these three times.
All execution times are given in microseconds unless otherwise noted.
Instruction
Conditions
ON execution time (
µ
s)
OFF execution time (
µ
s)
LD
---
0.75
1.5
LD NOT
---
0.75
1.5
AND
---
0.75
1.5
AND NOT
---
0.75
1.5
OR
---
0.75
1.5
OR NOT
---
0.75
1.5
AND LD
---
0.75
1.5
OR LD
---
0.75
1.5
OUT
---
1.13
2.25
OUT NOT
---
1.13
2.25
TIM
Constant for SV
2.25
R: 2.25
IL: 2.25
JMP: 2.25
*
DM for SV
R: 160
IL: 2.25
JMP: 2.25
Instruction Execution Times
Section 6-3
Содержание SYSMAC C200H
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Страница 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
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Страница 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Страница 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Страница 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...