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CompoNet
CompoNet offers the ideal mix of high speed, ample capacity, and ease-of-use needed to let you build the best machine.
Data Sheet (Features) (4560KB)
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Network Specifications
CompoNet is made up of segments divided by repeater unit.
There are four CompoNet baud rates, from 4 Mbps ultra-fast mode to 93.75 kbps long-distance mode.
The wiring specifications depend on the baud rate. Select the one that best matches your application.
| Baud rate | Cable type | Trunk line and sub-trunk line length (When 2 repeaters are used.) | Number of slaves per segment (Including number of repeaters) | Branch line length | Total branch line length per segment | Branch location restrictions | Number of slaves per branch line | Sub- branch line length | Total sub- branch line length per segment | |
| 4Mbps | Round cable I, II Flat cable I, II | 30m (90m) | 32 | --- | --- | --- | --- | --- | --- | |
| 3Mbps | Round cable I, II Flat cable I, II | 30m (90m) | 32 | 0.5m | 8m | 3/meter | 1 | --- | --- | |
| 1.5Mbps | Round cable I | Without branches | 100m (300m) | 32 | --- | --- | --- | --- | --- | --- |
| With branches | 30m (90m) | 32 | 2.5m | 25m | 3/meter | 3 | --- | --- | ||
| Round cable II Flat cable I, II | 30m (90m) | 32 | 2.5m | 25m | 3/meter | 3 | 0.1m | 2m | ||
| 93.75kbps | Round cable I | 500m (1500m) | 32 | 6m | 120m | 3/meter | 1 | --- | --- | |
| Round cable II Flat cable I, II | 200m (600m) | 32 | 200 meter free wiring total wire length per segment | |||||||
Example of wiring for 4Mbps baud rate (Application: Ultra-fast communications)
Example of wiring for 3Mbps (Application: Fast communications with branching)
Example of wiring for 1.5 Mbps (Application: Balance of fast communications and branching)
Example of wiring for 93.75 kbps (Application: Long-distance wiring and free wiring)
Example using round cable I
Free wiring (when using flat cable I or II or round cable II)
Free wiring is a form of connection that does not distinguish between trunk lines and branch lines. As long as the total wire length per segment is not more than 200 meters, you can wire freely without restrictions on the number of
Communications Specifications
| Item | Specification |
| Communications protocol | CompoNet Network protocol |
| Types of communications | Remote I/O communications (programless, constant sharing of data with Slave Units) and message communications (explicit message communications as required with Slave Units and FINS message communications as required with PLCs) |
| Baud rate | 4 Mbps, 3 Mbps, 1.5 Mbps, 93.75 kbps |
| Modulation | Base-band |
| Coding | Manchester code |
| Error control | Manchester code rules, CRC |
| Communications media | The following media can be used. Round cable I Round cable II Flat Cable I Flat Cable II Note: Round cable I, round cable II, Flat Cable I, and Flat Cable II are all different types of cable. To use more than one type of cable at a time, Repeater Units must be used to separate them on trunk lines and sub-trunk lines. |
| Communications distance and wiring | Refer to Cable Types, Baud Rates, and Maximum Distances in the Master Unit Operation Manual. |
| Connectable Master Units | CompoNet Master Units |
| Connectable Slave Units | CompoNet Slave Units |
| Maximum I/O capacity | 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) |
| Maximum number of nodes | Word Slave Units: 64 input nodes and 64 output nodes Bit Slave Units: 128 input nodes and 128 output nodes Repeater Units: 64 nodes |
| Bits allocated per node address | Word Slave Units: 16 bits Bit Slave Units: 2 bits |
| Maximum number of nodes per trunk line or sub-trunk line | 32 nodes (including Repeater Units) |
| Applicable node addresses | Word Slave Units: IN0 to IN63 and OUT0 to OUT63 Bit Slave Units: IN0 to IN127 and OUT0 to OUT127 Repeater Units: 0 to 63 |
| Repeater Unit application conditions | Up to 64 Repeater Units can be connected per network (i.e., per Master Unit). Up to 32 Repeater Units can be connected per trunk line or per sub-trunk line. When Repeater Units are connected in series from the Master Unit, up to two extra segment layers can be created (i.e., up to 2 Repeater Units are allowed between a Slave Unit and the Master Unit). |
| Signal lines | Two lines: BDH (communications data high) and BDL (communications data low) |
| Power lines | Two lines: BS+ and BS- (power for communications and internal Slave Unit circuits) Power is supplied from the Master Unit or Repeater Units. |
| Connection forms | Standard or Sheathed Flat Cable at baud rate of 93.75 kbits/s: No restrictions Other cables or baud rates: Trunk line and branch lines |
| Connections for Slave Units and Repeater Units: T-branch or multidrop connections |
Caution: In the interenst of product improvement, specifications are subject to change without notice.
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