Festo CP-FB13-E - Page 23

1. Installation
1-11
Festo Festo P .BE CP FB13-E-EN en 9910c
1.3.1 Branch line length
Please note
S Please observe the maximum permitted length of the
field bus cable, if you connect the bus node via a branch
line.
S When ascertaining the max. permitted length of the field
bus cable, take into account also the sum of the branch
line lengths.
The maximum permitted length of the branch line depends on
thetypeofcableusedandonthebaudrate.
Baud rate
(in kBaud)
Field bus length
(max.)
Max. permitted
branc h line
9,6 1200 m 500 m
19,2 1200 m 500 m
93,75 1200 m 100 m
187,5 1000 m 33.3 m
500 400 m 20 m
1500 200 m 6.6 m
3000-12000 100 m –
Recommendation:
Use a cable with a capacity per units length of
< 30 nF/km.
Otherwise the permitted length of cable will be reduced.