CC-Link/LT specification
| 4point modes |
8point modes |
16point modes |
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| Max. number of link points | 256points (512points)* |
512points (1024points)* |
1024points (2048 points)* |
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| Number of link points per station | 4points (8points)* |
8points (16points)* |
16points (32points)* |
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 |
When 32 stations are connected |
Number of points |
128points | 256points | 512points |
| 2.5Mbps | 0.7 | 0.8 | 1.0 | ||
| 625Kbps | 2.2 | 2.7 | 3.8 | ||
| 156Kbps | 8.0 | 10.0 | 14.1 | ||
| When 64 stations are connected |
Number of points |
256points | 512points | 1024points | |
| 2.5Mbps | 1.2 | 1.5 | 2.0 | ||
| 625Kbps | 4.3 | 5.4 | 7.4 | ||
| 156Kbps | 15.6 | 20.0 | 27.8 | ||
| Communication speed (bps) | 2.5Mbps / 625Kbps / 156Kbps | ||||
| Communication system | BITR method (Broadcastpolling + Interval Timed Response) |
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| Transmission path format | T-branch format | ||||
| Error control system | CRC | ||||
| Max. number of units connected | 64 units | ||||
| Slave station number | 1 to 64 | ||||
| Max. number of connected modules to branch line |
8 units / Branch | ||||
| Inter station length | Unlimited | ||||
| Inter T-branch length | Unlimited | ||||
| Master station connection position | Connected to the end of the main line. | ||||
| RAS function | Network diagnosis, internal loopback diagnosis, slave station disconnection, and automatic return |
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| Connection cable | Dedicated fl at cable (0.75mm2×4), Dedicated high fl exible cable (0.75mm2×4), VCTF cable (JIS C 3306 conformance, 0.75mm2×4) |
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*This is the address numbers of link points in case of using the same address numbers for input and output.
●CC-Link/LT wiring specification
| Item | Specification | Remarks | ||
| Communication speed | 2.5Mbps |
625kbps |
156kbps |
|
| Inter station length | Unlimited | |||
| Max.
number of connected modules to branch line |
8 units / Branch | |||
| Max trunk line length | 35m | 100m | 500m | Cable
length between terminators. (Length of branch cable not included.) |
| Inter T-branch length | Unlimited | |||
| Max. branch line length | 4m | 16m | 60m | Overall cable length for one branch line |
| Overall branch line length | 15m | 50m | 200m | Overall length of all the branch lines |
·Diff erent types of cables cannot be used together within the main line.
·Diff erent types of cables cannot be used together within the same branch line.
·Install the master station at either end of the main line.
·Install a terminating resistor within 20 cm from the master station.
*1:Include the length of any branch from any branch line in the overall branch line length.
