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2-1-3 CompoNet Communications Specifications
2
Communications protocol
Baud rate
Modulation
Coding
Error control
Communications media
Communi-
cations
distance
Maximum I/O capacity
Max. number of connected
nodes
Max. number of connected
nodes per trunk line or sub-trunk
line
* Lengths given in parentheses are for when two Repeater Units are used.
2 - 3
Item
CompoNet protocol
93.75 kbps, 1.5 Mbps, 3 Mbps, or 4 Mbps*1
*1
A baud rate of 4 Mbps is not supported for branch lines and thus cannot be used for
Slave Units with Cables.
Baseband
Manchester code
Manchester code rules, CRC
Round Cable I (2-conductor cable, JIS C3306)
Round Cable II (4-conductor cable, JIS C3306)
Flat Cable I (DCA4-4F10 Standard Flat Cable)
Flat Cable II (DCA5-4F10 Sheathed Flat Cable)
Baud rate
Max.
segment
length
4 Mbps*
30 m
(90 m)
3 Mbps*
30 m
(90 m)
1.5 Mbps
No
100 m
(Round
branches
(300 m)
Cable I)*
Branches 30 m
(90 m)
1.5 Mbps (Round
30 m
Cable II or Flat
(90 m)
Cable I/II)
93.75 kbps (Round
500 m
Cable I)
(1,500 m)
93.75 kbps (Round
Unrestricted wiring is enabled for a total length of 200 m per segment.
Cable II or Flat
Cable I/II)
Word Slave Units: 1,024 inputs and 1,024 outputs (2,048 I/O points total)
Bit Slave Units: 256 inputs and 256 outputs (512 I/O points total)
When the Gateway Unit is used, I/O capacities are as follows depending on the CompoNet
communications mode.
Word Slave
Units
Bit Slave Units
Word Slave Units: 64 input nodes and 64 output nodes
Bit Slave Units: 128 input nodes and 128 output nodes
When the Gateway Unit is used, the maximum number of connected nodes is as follows
depending on the CompoNet communications mode.
Word
Slave
Units
Bit Slave
Units
32 nodes (number of Slave Unit and Repeater Unit nodes)
Specification
Branch
Total
Branch
length per
branch
location
segment
length per
restriction
segment
0 m
0 m
---
0.5 m
8 m
3 branches/m 1
---
---
---
2.5 m
25 m
3 branches/m 3
2.5 m
25 m
3 branches/m 3
6 m
120 m
3 branches/m 3
Communications
Communications
mode 0 or 4
mode 1 or 5
1,024 inputs and
512 inputs and
1,024 outputs
512 outputs
256 inputs and
192 inputs and
256 outputs
192 outputs
Communications
Communications
mode 0 or 4
mode 1 or 5
IN0 to IN63 and
IN0 to IN31 and
OUT0 to OUT63
OUT0 to OUT31
IN0 to IN127 and
IN0 to IN95 and
OUT0 to OUT127
OUT0 to OUT95
CompoNet Gateway Unit for CC-Link Operation Manual
Connected
Max. sub-
Total sub-
nodes per
trunk length
trunk length
branch
per segment
per segment
---
---
0 m
0 m
---
---
---
0.1 m
2 m
---
Communications
Communications
mode 2 or 6
mode 3
256 inputs and
128 inputs and
256 outputs
128 outputs
96 inputs and 96
32 inputs and
outputs
32 outputs
Communications
Communications
mode 2 or 6
mode 3
IN0 to IN15 and
IN0 to IN7 and
OUT0 to OUT15
OUT0 to OUT7
IN0 to IN47 and
IN0 to IN15 and
OUT0 to OUT47
OUT0 to OUT15
---
---
---
---
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Troubleshooting
