
1.DeviceNet FUNCTIONS SETTING B-64044EN/01
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Ladder program processing time
Operates in a cycle that is a multiple of 4 ms or 8 ms depending on the
size of the ladder program.
The actual time can be measured with SCAN TIME on the PMC
STAUS screen.
This value is the maximum value of Tin-out.
Refreshing time
This is the time from when the DeviceNet master function updates all
DeviceNet-related DI/DO data assigned to PMC registers until DI/DO
data is updated again. The refreshing time varies with the sum of the
size of DI/DO data of the slave to be communicated.
This value is the maximum value of Tout1 and Tin3.
Sum of DI/DO data sizes Refreshing time
1 to 80 bytes 8 ms
81 to 160 bytes 16 ms
161 to 240 bytes 24 ms
241 to 320 bytes 32 ms
Communication processing time
This is the time from when I/O data communication with the slave
with a node number is completed until I/O data communication with
the slave having the node number is completed again.
The actual time can be measured with CYCLE TIME (CURRENT),
CYCLE TIME (MAXIMUM), and CYCLE TIME (MINIMUM) on
the BUS PARAMETER screen
This value is the maximum value of Tout2 and Tin2.
Slave processing time
This is the processing time until the signal input to a slave device is
sent to the network or the processing time until a slave device outputs
the output signal received from the network. Refer to the manual of
the slave device.
This value is the maximum value of Tout3 and Tin1.
Maximum input/output response time
The maximum input/output response time (Tmax) is calculated as
shown below.
Tmax = ladder-program-processing-time +
(refreshing-time + communication-processing-time +
slave-processing-time) × 2