Omron CS1W-DRM21, Operation Manual

Page: 327 / 379

310
Message Communications Time Section 7-2
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
B
+ 0.6 [ms]
T
B
: The baud rate
(500 kbps: T
B
= 2; 250 kbps: T
B
= 4; 125 kbps: T
B
= 8)
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
+ 0.6 [ms]
T
B
: The baud rate
(500 kbps: T
B
= 2; 250 kbps: T
B
= 4; 125 kbps: T
B
= 8)
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