Omron CS Series Operator's Manual page 205

Cycle Time and Time
I/O Refresh Time for Typical
Special I/O Units
Type
C200H Special I/O Unit
CS/CJ-series Special I/O Unit
Calculating Cycle Time
190
AUDIN - 8, avenue de la malle - 51370 Saint Brice Courcelles - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : info@audin.fr
I/O refresh time is calculated statically. For Units with variable I/O refresh time
depending on the status, typical values are used. (e.g. The I/O refresh time
for the Position Control Unit (C200H-NC413) is 2.2 ms.)
Unit name
Temperature Control Unit
ASCII Unit
Analog Input Unit
High-speed Counter Unit
Position Control Unit
PLC Link Unit
Analog I/O Unit
An example of calculating the cycle time when only Basic I/O Units are
mounted.
Condition
Item
CPU Rack (for 8 slots)
CS/CJ-series Expansion
Rack (for 8 slots) ´ 1Unit
User program
Minimum Cycle Time Proc-
ess
Peripheral servicing with
other Units (Special I/O Unit,
CPU Bus Unit, Inner Board,
and file access)
Calculation example
Process name
(1) Overseeing processing
(2) Computing process
(3) Calculating for Mini-
mum Cycle Time
(4) I/O refresh
(5) Peripheral servicing
Cycle time
Model
C200H-TC @@@ 2.6 ms
C200H-ASC02 1.8 ms
C200H-AD001 1.0 ms
C200H-CT001-V1
2.4 ms
C200H-CT002
C200H-NC111 2.2 ms
(4.0 ms when read)
C200H-NC112
C200H-NC413 4.3 ms
(5.5 ms when read/write)
C200H-LK401 0.3 ms
CS1W-MAD44 0.2 ms
Contents
96-point Input Unit CS1W-ID291
96-point Output Unit CS1W-OD291
96-point Input Unit CS1W-ID291
96-point Output Unit CS1W-OD291
5 k steps LD 2.5 k steps, OUT 2.5 k steps
None
None
Calculation example
-
0.04 ms ´ 2500 + 0.17 ms ´ 2500
(The actual computing time var-
ies depending on execute/non-
execute.)
(Minimum Cycle Time disabled)
0.02 ms ´ 8 + 0.02 ms ´ 8
-
(1) + (2) + (3) + (4) + (5)
Section 9-2
I/O refresh time per 1
Unit
4 Units
4 Units
4 Units
4 Units
Processing
time
0.5 ms
(0.53 ms)
0 ms
0.32 ms
0 ms
1.35 ms