I/O Refresh Times For Plc Units - Omron CP1H-CPU - 05-2006 Operation Manual

Computing the Cycle Time
Related Words
Note
2-7-4

I/O Refresh Times for PLC Units

CPM1A Unit I/O Refresh Times
Note
94
Name Addresses
Maximum Cycle A262 and
Time A263
Present Cycle Time A264 and
A265
The average cycle time for the past eight cycles can be read from the CX-Pro-
grammer.
The following methods are effective in reducing the cycle time.
• Place tasks that do not need to be executed on standby.
• Use JMP-JME instructions to skip instructions that do not need to be exe-
cuted.
Name
Expansion I/O Units
Analog I/O Units
Temperature Sensor Units
DeviceNet I/O Link Unit
CompoBus/S I/O Link Unit
The I/O refresh time for CPU Unit built-in I/O is included in overhead process-
ing.
Description
These words contain the maximum cycle time in
increments of 0.1 ms. The time is updated every
cycle and is recorded in 32-bit binary (0 to FFFF
FFFF hex, or 0 to 429,496,729.5 ms). (A263 is
the leftmost word.)
These words contain the present cycle time in
increments of 0.1 ms. The time is updated every
cycle and is recorded in 32-bit binary (0 to FFFF
FFFF, or 0 to 429,496,729.5 ms). (A265 is the
leftmost word.)
Model I/O refresh time per Unit
CPM1A-40EDR 0.39 ms
CPM1A-40EDT 0.39 ms
CPM1A-40EDT1 0.39 ms
CPM1A-40ETR1 0.18 ms
CPM1A-20EDT 0.18 ms
CPM1A-20EDT1 0.18 ms
CPM1A-16ER 0.25 ms
CPM1A-8ED 0.13 ms
CPM1A-8ER 0.08 ms
CPM1A-8ET 0.08 ms
CPM1A-8ET1 0.08 ms
CPM1A-MAD01 0.29 ms
CPM1A-MAD11 0.32 ms
CPM1A-TS001 0.25 ms
CPM1A-TS002 0.52 ms
CPM1A-TS101 0.25 ms
CPM1A-TS102 0.52 ms
CPM1A-DRT21 0.38 ms
CPM1A-SRT21 0.21 ms
Section 2-7