Omron DeviceNet CV Series Operation Manual page 327

Message Communications Time
310
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Message communications time =
Communications cycle time × ((No. of message bytes + 15) ÷ 6 + 1)
No. of message bytes: No. of data bytes following the FINS command
code
The communications cycle time depends on whether or not remote I/O com-
munications are being used.
No Remote I/O Communications
The following equation can be used to compute the message communications
time when remote I/O communications are not being used.
Message communications time =
2 ms (see note) + 0.11 × T
T : The baud rate
B
(500 kbps: T
Note The minimum remote I/O communications cycle time is 2 ms even if remote I/
O communications are not being used.
Remote I/O and Message Communications
Performing message communications in addition to remote I/O communica-
tions will increase the message communications time.
Message communications time=
Communications cycle time for remote I/O communications only
+ 0.11 × T
B
T : The baud rate
B
(500 kbps: T
+ 0.6 [ms]
B
= 2; 250 kbps: T
B B
+ 0.6 [ms]
= 2; 250 kbps: T
B B
Section 7-2
= 4; 125 kbps: T = 8)
B
= 4; 125 kbps: T = 8)
B