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4. Transmission specifications
4-2
4.1.2 Transmission specifications of Fnet slave module
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Table 4.1.2 Transmission specifications of Fnet slave module
Item Specification
Transmission speed 1Mbps
Encoding type Manchester Biphase-L
Transmission distance
(per segment)
Max. 750m
Transmission distance
(during using repeater)
Max. 750m
×
(6 repeater + 1) = 5.25km
Electric
Transmission line Twisted pair shielded cable
Transmission distance
(during segment)
Max. 3km
×
(6 EOC +1) = 21km
Optical
Transmission line Optical cable
Max. number of stations connected Link master class + Remote slave class = 64
Max. size of protocol 256 byte
Access type of
communication right
Circulated token passing
Communication type
Connection oriented service
Connectionless service
4.1.3 Transmission specifications of Fnet option module
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Table 4.1.3(A) Transmission specifications of repeater
Item Specification
Communication speed 1Mbps
Encoding type Manchester Biphase-L
Transmission line(Cable) Twisted pair shielded cable
Max. extension distance per module 750m
Max. number of repeater between
stations
6 units
Max. distance between stations 5.25km(when 6 repeater is installed)
Frame error check CRC 16 = X
15
+ X
14
+ X
13
+ ... + X
2
+ X + 1