B&R Automation PC 2200 User Manual page 99

Extension
≤1000 m
≤200 m
≤100 m
<20 m
1)
1) The specified cable length is only valid with the values specified in
the timing register.
Preferably, the cable material used should have the following properties or deviate only slightly from them in order
to achieve an optimal transfer rate.
CAN cable
Signal line
Cable cross section
Wire insulation
Conductor resistance
Stranding
Shield
Ground conductor
Cable cross section
Wire insulation
Conductor resistance
Outer jacket
Material
Properties
Cable shield
Terminating resistor
A terminating resistor is integrated on the interface option. It is located near the ETH1 interface. A switch is used
to switch the terminating resistor for the CAN bus interface on and off. LED status indicator "L1" indicates whether
the terminating resistor is switched on or off.
On The terminating resistor is switched on.
Off The terminating resistor is switched off.
2.3.4.6.3.4 Shielding
For the interfaces on the 10-pin female connector, the shield of the interfaces can be connected to pin "Shield"
of the female connector.
In addition, there is a functional ground connection on the the interface cover of the system unit and a screw point
for cable shields that can also be used for the shielded cables.
Automation PC 2200 User's manual V 1.05 Translation of the original documentation
Table 118: CAN - Bus length and transfer rate
Tab. 116 "CAN driver
2x 0.25 mm² (24AWG/19), tinned copper stranded wire
1x 0.34 mm² (22AWG/19), tinned copper stranded wire
Table 119: CAN cable requirements
Terminating resistor
Table 120: Terminating resistor
Transfer rate
Typ. 50 kbit/s
Typ. 250 kbit/s
Typ. 500 kbit/s
Typ. 1 Mbit/s
settings". Otherwise, the cable lengths depend on the values in
Property
PE
≤82 Ω/km
Wires stranded in pairs
Pair shielding with aluminum foil
PE
≤59 Ω/km
PUR compound
Halogen-free
Composed of tinned copper wires
Terminating resistor
Technical data
99