CS1D-II102D Omron, CS1D-II102D Datasheet - Page 382

• Manufacturer Part Number: CS1D-II102D
• Description: CS1D Dual IO Interface Unit
• Manufacturer: Omron

Specifications of CS1D-II102D

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Peripheral Servicing Cycle
Time
Computing the Cycle Time
Note
The program execution cycle time is the total time required for the PLC to per-
form the 5 operations shown in the following tables.
Cycle time = (1) + (2) + (3) + (4) + (5)
The peripheral servicing execution cycle time depends on the following condi-
tions.
The peripheral servicing cycle time is the total time required for the PLC to
perform the 5 operations shown in the following tables.
Cycle time = (1) + (2)
1. The cycle time display on a Programming Device is the Program Execution
2. The peripheral service cycle time varies with the event load and number of
(1)
(2)
(3)
(4)
(5)
(1)
(2)
• Fixed cycle time setting in the PLC Setup
• File access in file memory, and the amount of data transferred to/from file
• Fixed peripheral servicing time in the PLC Setup
• Type and number of Special I/O Units, CS-series CPU Bus Units, Inner
• Type and frequency of event servicing requiring communications ports.
• Use of peripheral and RS-232C ports
memory
Boards, and type of services being executed.
Cycle Time.
Units that are mounted. In a Parallel Processing Mode, however, this vari-
ation will not affect the program execution cycle time.
Overseeing
Program execution
Cycle time calcula-
tion
I/O refreshing
Partial peripheral
servicing
Name
Overseeing
processing
Peripheral
servicing
Checks user program memory,
checks for battery errors, etc.
Performs
services for
the events
give at the
right, includ-
ing I/O
memory
access.
Details
I/O bus check, etc.
Same as for Normal Mode. Same as for Normal Mode.
Waits for the specified
cycle time.
Same as for Normal Pro-
cessing Mode.
Servicing file access
Processing
Events with CS-series
Special I/O Units (does
not include I/O refresh-
ing)
Events with CS-series
CPU Bus Units (does
not include I/O refresh-
ing)
Peripheral port events
RS-232C port events
Events with Inner
Boards
Events using communi-
cations ports
0.3 ms
Same as for Normal Mode.
Same as for Normal Pro-
cessing Mode.
Same as for Normal Pro-
cessing Mode.
Processing time and
0.4 ms
1.0 ms for each type of
service
If servicing ends before
1 ms has expired, the
next type of servicing
will be started immedi-
ately without waiting.
fluctuation cause
Processing time and
fluctuation cause
Section 9-4
347