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Appendix A Specifications
A.3
TC-net I/O Loop Specifications
Item
System
Topology
Data transmission rate
Media access method
Redundancy
Number of nodes connected
Number of I/O adaptors connected
Transmission cable
Connector
Cable length
Total extension
Communication service
Scan transmission frequency
Scan transmission capacity
Message transmission capacity
Message relay control
State change detection
Maintenance function
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6F8C1601
Table A-3 TC-net I/O Loop Specifications
Optical system
Loop
100Mbps
DOMA（Deterministic Ordered Multiple Access）
Dual loop
Max. 254 nodes per system
Max. 32 adaptors
Optical fiber cable
Duplex LC connector
Max. 2km
Max. 4km
Scan transmission
Message transmission
High-speed scan : 100μs or more
Medium-speed scan : 1ms or more
128K Words per system (2048 Blocks per system)
Maximum transmission capacity : 32K Words per node
1996 Bytes
None
None
Scan healthy map
Node information
Bus diagnostic counter
Loopback test
I/O loop configuration state
Specification
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