Field Bus Baud Rate And Field Bus Length - Festo VIFB13-02 Series Manual

VIFB13 - 02
0503a
4. Installation

Field bus baud rate and field bus length

PLEASE NOTE
The Festo valve terminals set themselves
automatically to one of the following baud
rates.
The maximum field bus length depends on the
baud rate used. The table below shows the baud
rates which can be used.
Baud rate
9.6 kB
19.2 kB
93.75 kB
187.5 kB
500
1500
3000 - 12000 kB
Cable specification as per DIN E 19245 part 3
(cable A):
Surge impedance:
Capacitance per unit length < 30 pF/m
Loop resistance
Core diameter
Core cross section
Field bus length (max.)
kB
kB
1200 m
1200 m
1200 m
1000 m
400 m
200 m
100 m
135 - 165 Ohm
(3 - 20 MHz)
< 110 Ohm/km
> 0.64 mm
2
> 0.34 mm
4-23