Omron 3G8F7-CRM21 User Manual page 171

Remote I/O Communications Performance
T (Time Allotted
NetIn
for IN Frames in
Communications
Cycle Time)
T (Time Allotted
NetOut
for OUT Frame in
Communications
Cycle Time)
S1 Calculation Example
Conditions
Data rate Word Inputs
4.0Mbps 60 Units
60 × 3.38 µs ≈ 0.202 ms
=
S1
S2 is the correction coefficient that is used when more than 64 Bit IN Slave Units are
connected.
S2 = Number of connected Bit IN Slave Units × Correction coefficient for each Bit IN
Slave Unit
Slave Unit 4.0Mbps
Type
7.47 µs
Bit IN Slave
S2 Calculation Example
Conditions
Data rate Bit Inputs
3.0Mbps 120 Units
120 × 0.4 µs ≈ 0.048 ms
=
S2
Data rate
0.010 ms × (Number of Bit Input Slave Units) + S2 + 0.011 ms ×
4.0 Mbps
(Number of Word Input Slave Units) + S1
0.020 ms × (Number of Bit Input Slave Units) + S2 + 0.022 ms ×
3.0 Mbps
(Number of Word Input Slave Units) + S1
0.044 ms × (Number of Bit Input Slave Units) + S2 + 0.051 ms ×
1.5 Mbps
(Number of Word Input Slave Units) + S1
0.531 ms × (Number of Bit Input Slave Units) + 0.657 ms × (Number of
93.75 kbps
Word Input Slave Units)
Data rate 4.0 Mbit/s
T 0.013 ms + K
NetOut
K = (Number of Word Output Slave Units connected
Word Output Slave Unit)
+ ((Number of Bit Output Slave Units + 7) ÷ 8)
Output Slave Units)
Additional time per Word Output Slave Unit / Additional time per 8 Bit Output
3.0Mbps 1.5Mbps
0.40 µs 4.46 µs
T
NetIn
3.0 Mbit/s 1.5 Mbit/s
0.018 ms + K 0.035 ms + K
×
additional time per 8 Bit
Section C-1
93.75kbps
-
93.75 kbit/s
0.567 ms + K
×
additional time per
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