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Cycle Time and Time
Section 9-2
193
Virtual Cycle Time
The cycle time of the CX-Simulator is set as "virtual cycle time" in default. The
virtual cycle time is given by converting the time required for the Ladder Engine
to operate one cycle to the actual PLC cycle time.
Calculating Virtual Cycle
Time
In calculating the virtual cycle time, the followings are different from that of the
CS/CJ/CP-series PLC.
Process name
Process Contents
Processing time and Fluctuation
factors
(1) Overseeing Process-
ing
Fixed Value
0.5 ms
(2) Computing Process
Process instruction execution of the user
program in the UM1. The sum of the
execution time of instruction words.
The sum of the execution time of
UM1instruction words.
(3) Calculating the Mini-
mum Cycle Time"
Calculate the cycle time.
When "Minimum Cycle Time" is speci-
fied in the PLC Setup, if ((1)+(2)+(4)) is
smaller than the specified "Minimum
Cycle Time", it is regarded as the virtual
cycle time.
When "Minimum Cycle Time" is not
specified, the cycle time is 0 ms.
In "Minimum Cycle Time", there is
no waiting time and only the cycle
time is set.
(4) I/O refresh
The accumulated I/O refresh time for
each Unit registered in PLC unit set-
tings.
I/O refresh time for each Unit mul-
tiplied by The number of Units
used.
(5) Peripheral servicing
Not calculated in the virtual cycle time.
0 ms
Note
Although some instructions have different process time depending on condi-
tions, the CX-Simulator calculates the cycle time with the process time on the
standard conditions.
I/O Refresh Time for Typical Basic I/O Units
Type
Unit name
Model
I/O refresh time per
1 Unit
16-input-point Unit
C200H-ID212
0.02 ms
16-output-point Unit
C200H-OD212
0.03 ms
C200H Basic I/O Unit
Interrupt Input Unit
C200HS-INT01
0.10 ms
32-point Input Unit
C200H-ID216
0.10 ms
32-point Output Unit
C200H-OD218
0.10 ms
64-point Input Unit
C200H-ID217
0.20 ms
C200H Group2 High-density I/O Unit
64-point Output Unit
C200H-OD219
0.13 ms
96-point Input Unit
CS1W-ID291
0.02 ms
CS/CJ/CP-series Basic I/O Unit
96-point Output Unit
CS1W-OD291
0.02 ms
Summary of Contents for CX-Simulator 1.9
Page 1: ...Cat No W366 E1 10 CX Simulator Ver 1 9 SYSMAC WS02 SIMC1 E OPERATION MANUAL...
Page 2: ......
Page 3: ...SYSMAC WS02 SIMC1 E CX Simulator Ver 1 9 Operation Manual Revised December 2009...
Page 24: ...xxv...
Page 30: ...xxxi...
Page 35: ...xxxvi...
Page 39: ......
Page 63: ...Comparison of the CX Simulator and SYSMAC CS CJ series PLCs Section 1 6 24...
Page 75: ...Installing and Uninstalling the Software Section 2 1 36...
Page 157: ...Task Debugging Section 4 4 118...
Page 195: ...Connection with Application Programs Section 7 2 156...
Page 225: ...Checking the Result Section 8 5 186...
Page 277: ...Other Functions Section 9 4 238...
Page 289: ...Other Tips for Troubleshooting Section 10 3 250...
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