143
Remote I/O Communications Performance Section 5-3
Note Communications Mode 8
J = (Number of Word Output Slave Units × 0.5
µs) + (Number of Bit Output
Slave Units × 0.0625
µs)
J Calculation Example
Conditions
J = (16 × 0.5 µs) + (8 × 0.0625 µs)
≅ 0.009 ms
• TNetOut: Time allotted for output frames in communications cycle time
Note Communications Mode 8
K = (Number of Word Output Slave Units connected x additional time per
Word Output Slave Unit) + [(Number of Bit Output Slave Units +7)
÷ 8] × addi-
tional time per 8 Bit Output Slave Units)
Additional time per Word Output Slave Unit / Additional time per 8 Bit Out-
put Slave Units
K Calculation Example
Conditions
K = (7 × 5.312 µs) + (2 × 5.312 µs)
≅ 0.048 ms
• TOUT: Output Slave Unit output delay time
For details on delay times for individual Slave Units, refer to the output
specifications for individual Slave Units in the CompoNet Slave Unit Oper-
ation Manual (Cat. No. W457).
Baud rate Word outputs Word inputs Bit outputs Bit inputs
--- 16 nodes 48 nodes 8 nodes 8 nodes
Baud rate
Communications
mode
Maximum I/O 4.0 Mbit/s 3.0 Mbit/s 1.5 Mbit/s 93.75 kbit/s
Communications
mode 0
128 input words, 128 output words 0.046 ms 0.060 ms 0.121 ms 1.936 ms
Communications
mode 1
256 input words, 256 output words 0.078 ms 0.103 ms 0.206 ms 3.305 ms
Communications
mode 2
512 input words, 512 output words 0.142 ms 0.188 ms 0.377 ms 6.048 ms
Communications
mode 3
256 input words, 256 output bits + 128
input bits, 128 bit outputs
0.110 ms 0.146 ms 0.291 ms 4.674 ms
Communications
mode 8
1,024 input words, 1,024 output words
+ 256 bit inputs, 256 bit outputs
Note The number of connectable
nodes is 128 for Word Slave
Units (64 input and 64 output)
and 256 for Bit Slave Units (128
bit input and 128 bit output).
0.13 ms + K
(See note.)
0.018 ms +
K (See
note.)
0.035 ms +
K (See
note.)
0.567 ms +
K (See
note.)
Baud rate
Communica-
tions mode
4.0 Mbit/s 3.0 Mbit/s 1.5 Mbit/s 93.75 kbit/s
Word Output 4.0 µs5.312 µs 10.656 µs 171.104 µs
Bit Output 4.0 µs5.312 µs 10.656 µs 171.104 µs
Baud rate Word outputs Word inputs Bit outputs Bit inputs
3.0 Mbit/s 7 Units 8 Units 9 Units 10 Units
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