ETIC AFO485, Руководство пользователя, Страница: 29 / 36

AFO485 and RFO485 USER MANUAL ref 9011509-01 Page 29
Step 2 : Moreover, independent of the quality of the fibre optic, the
range must not exceed the values in the tables below in relation to:
•
the data rate of the CAN network
•
the timing of “CAN” bit sampling by the PLC.
The 3
rd
column of the table, titled CIA 87%, corresponds to the
recommended “CAN IN AUTOMATION” normally applied by CAN
interfaces belonging to PLC’s.
The values indicated in this column are the ranges which are
obtained by a PLC using the CIA standard.
1 /2 Tb 2/3 Tb CIA (87%)
10 kb/s
5,9 Km 6,5 km 8,6 km
20 kb/s
2,4 km 3,2 km 4,3 km
50 kb/s
0,9 km 1,2 km 1,6 km
100 kb/s
0,4 km 0,55 km 0,8 km
125 kb/s
0,3 km 0,42 km 0,6 km
250 kb/s
0,1 km 0,16 km 0,23 km
500 kb/s 0 60 m 150 m