6F8C0921
13
Chapter 3 Specifications
System specification
Table 3-1 System specification
Item Description
Transmission path
configuration
Bus
Number of transmission
stations
122 (maximum)
(32 in each segment, expandable with repeater (up to 3))
Transmission cable RS-485 Shielded twisted pair cable
Transmission speed 9.6 K to 12 Mbps
Transmission code Manchester
Modulation method Baseband
Access method To k e n p a s s i n g
Physical layer RS-485, with insulation by photocoupler
Communication service (1) Cyclic transmission
(2) Message transmission
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