Connecting The Can Bus; Can Bus Line - Festo CPX Series Manual

2. Fitting and installation
2.5

Connecting the CAN bus

2.5.1 CAN bus line

2-10
Note
Faulty installation or high transmission rates may cause
data transmission errors as a result of signal reflections
and attenuations.
Transmission errors can be caused by:
– missing or incorrect terminating resistor
– faulty screened connection
– branches
– large distances
– inappropriate cables
Use a twisted, screened 4-core cable as CAN bus line. The
CPX-CMXX communicates with the motor controllers via the
CAN bus line.
If the Festo CAN bus plug is used, a cable diameter of 5-8 mm
or 7-10 mm is permitted.
Note
If the CPX terminal is fitted onto the moving part of a
machine, the CAN bus line on the moving part must be
provided with strain relief. Please also observe the
relevant regulations in EN 60204 part 1.
Festo P.BE-CPX-CMXX-EN en 1102b