Omron DeviceNet CV Series Operation Manual page 319

Remote I/O Communications Characteristics
CV-series PLCs
(Synchronous Mode)
PLC
Master Unit processing
Input
Output
Note
302
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The following timing charts show the minimum and maximum I/O response
times of the DeviceNet Network for a CV-series PLC operating in synchro-
nous mode.
Minimum I/O Response Time
The minimum I/O response time occurs with the I/O timing shown in the fol-
lowing diagram.
Cycle time
Program
execution
Peripheral
servicing
T +T
RT - IN PLC0
T : The Input Slave's ON (OFF) delay
IN
T : The Output Slave's ON (OFF) delay
OUT
T : Input Slave's communications time/Slave (See page 306.)
RT-IN
T : Output Slave's communications time/Slave (See page 306.)
RT-OUT
T : The PLC's cycle time (program execution + peripheral servicing)
PLC0
The minimum I/O response time (T
+ 2 × T
T = T + T
MIN IN RT-IN
1. Refer to SECTION 4 General-purpose Slaves, SECTION 5 Environment-
resistive and Waterproof Slaves, and SECTION 6 Special I/O Slave Units
Specifications for details on Input and Output Slaves' delay times.
2. Refer to Refresh Time on page 307 and the PLC's Operation Manual for
details on the PLC's peripheral servicing cycle time. (See under Synchro-
nous Operation .)
Program Program
execution execution
Peripheral
servicing
T
PLC0
) is the total of the following terms:
MIN
+ T + T
PLC0 RT-OUT OUT
Section 7-1