Omron CS1W-RPT01 Benutzerhandbuch
254
Data Link I/O Response Time
Section 8-3
CVM1 and CV-series PLCs
Under Asynchronous
Operation
Under Asynchronous
Operation
When a CVM1 or CV-series CPU Unit is operating in asynchronous mode,
data exchange with the Controller Link Unit is executed as interrupt process-
ing during peripheral processing, regardless of the cycle time of PLC instruc-
tion execution. Data exchange timing is as follows:
data exchange with the Controller Link Unit is executed as interrupt process-
ing during peripheral processing, regardless of the cycle time of PLC instruc-
tion execution. Data exchange timing is as follows:
More than one data exchange can be executed during a PLC cycle, depend-
ing on the data exchange timing. If interrupt processing for data exchange is
executed, the peripheral servicing interval will be lengthened by the time
required for the interrupt processing (see 8-3-2 Data Processing Time on
page 254).
ing on the data exchange timing. If interrupt processing for data exchange is
executed, the peripheral servicing interval will be lengthened by the time
required for the interrupt processing (see 8-3-2 Data Processing Time on
page 254).
CS/CJ-series PLCs, CVM1
and CV-series PLCs in
Synchronous Mode,
CQM1H-series PLCs, and
C200HX/HG/HE PLCs
and CV-series PLCs in
Synchronous Mode,
CQM1H-series PLCs, and
C200HX/HG/HE PLCs
When a CS/CJ-series, CQM1H-series, CVM1, or CV-series PLC is operating
in synchronous mode, a CQM1H-series, or a C200HX/HG/HE PLC is operat-
ing, data exchange with the Controller Link Unit is executed as processing
during peripheral processing for the PLC cycle. Data exchange timing is as
follows:
in synchronous mode, a CQM1H-series, or a C200HX/HG/HE PLC is operat-
ing, data exchange with the Controller Link Unit is executed as processing
during peripheral processing for the PLC cycle. Data exchange timing is as
follows:
If processing for data exchange is executed, the PLC cycle time will be length-
ened by the time required for the interrupt processing (see 8-3-2 Data Pro-
cessing Time below).
ened by the time required for the interrupt processing (see 8-3-2 Data Pro-
cessing Time below).
8-3-2
Data Processing Time
The time required to process data exchange (data processing time) can be
roughly estimated as shown in the following table.
roughly estimated as shown in the following table.
The number of words processed in a single data exchange is shown in the fol-
lowing table for each series of PLC. If the number of data link words exceeds
the value shown in the table, data exchange will be executed as several sepa-
rate processes.
lowing table for each series of PLC. If the number of data link words exceeds
the value shown in the table, data exchange will be executed as several sepa-
rate processes.
Instruction execution
PLC cycle time
Execution
I/O refreshing
PLC processing
Peripheral processing
Peripheral servicing interval
Basic processing
CPU Bus
Unit service
Unit service
Programming
Device/Host Link
service
Device/Host Link
service
Interrupt processing
for data exchange
for data exchange
Execution
Execution
I/O refreshing
I/O refreshing
Interrupt processing
for data exchange
for data exchange
Interrupt processing
for data exchange
for data exchange
Basic processing
CPU Bus
Unit service
Unit service
Programming
Device/Host Link
service
Device/Host Link
service
CPU Bus
Unit service
Unit service
Programming
Device/Host Link
service
Device/Host Link
service
Basic processing
PLC cycle time
Execution
PLC processing
Basic processing
Execution
I/O refreshing
Basic processing
Processing for
data exchange
data exchange
Peripheral
service
service
CPU Unit
Equation estimating data processing time
CS1-H, CJ1-H, CJ1M CPU Unit
0.1 ms + Number of transfer words
×
0.7
µ
s
CS1, CJ1 CPU Unit
1.5 ms + Number of transfer words
×
1
µ
s
CVM1-series CPU Unit
1.7 ms + Number of transfer words
×
1
µ
s