Omron CP1H CPU Operation Manual page 127

Computing the Cycle Time
4: I/O Refreshing
CPU Unit built- Outputs from the CPU Unit to the actual
in I/O and I/O outputs are refreshed first for each Unit,
on CP-series and then inputs.
Expansion
Units and
Expansion I/O
Units
CJ-series Spe- Words allocated in CIO Area
cial I/O Units
Unit- specific
data
CJ-series CPU Words allocated in CIO and DM Areas
Bus Units
Unit- specific
data
5: Peripheral Servicing
Details
Services events for CJ-series Special I/O
Units.
Note Peripheral servicing does not include
I/O refreshing,
Services events for CJ-series CPU Bus
Units.
Note Peripheral servicing does not include
I/O refreshing.
Services USB port.
Services serial ports
Services communications ports.
Services built-in flash memory access.
Serves Memory Cassette access.
Details
Example: CompoBus/S
remote I/O
Examples:
• Data links for Control-
ler Link Units
• DeviceNet remote I/O
• Send/receive data for
protocol macros
• Socket services for
specific control bits for
Ethernet Units
If a uniform peripheral servicing time hasn't been set in the PLC Setup for
this servicing, 4% of the previous cycle's cycle time (calculated in step (3))
will be allowed for peripheral servicing.
If a uniform peripheral servicing time has been set in the PLC Setup, servic-
ing will be performed for the set time. Servicing will be performed for at
least 0.1 ms, however, whether the peripheral servicing time is set or not.
If no Units are mounted, the servicing time is 0 ms.
If a uniform peripheral servicing time hasn't been set in the PLC Setup for
this servicing, 4% of the previous cycle's cycle time (calculated in step (3))
will be allowed for peripheral servicing.
If a uniform peripheral servicing time has been set in the PLC Setup, servic-
ing will be performed for the set time. Servicing will be performed for at
least 0.1 ms, however, whether the peripheral servicing time is set or not.
If the ports are not connected, the servicing time is 0 ms.
If a uniform peripheral servicing time hasn't been set in the PLC Setup for
this servicing, 4% of the previous cycle's cycle time (calculated in step (3))
will be allowed for peripheral servicing.
If a uniform peripheral servicing time has been set in the PLC Setup, servic-
ing will be performed for the set time. Servicing will be performed for at
least 0.1 ms, however, whether the peripheral servicing time is set or not.
If no communications ports are used, the servicing time is 0 ms.
If a uniform peripheral servicing time hasn't been set in the PLC Setup for
this servicing, 4% of the previous cycle's cycle time (calculated in step (3))
will be allowed for peripheral servicing.
If a uniform peripheral servicing time has been set in the PLC Setup, servic-
ing will be performed for the set time. Servicing will be performed for at
least 0.1 ms, however, whether the peripheral servicing time is set or not.
If there is no access, the servicing time is 0 ms.
Processing time and fluctuation cause
I/O refresh time for each Unit multiplied by the number of
Units used.
I/O refresh time for each Unit multiplied by the number of
Units used.
I/O refresh time for each Unit multiplied by the number of
Units used.
Processing time and fluctuation cause
Section 2-7
93