Woodward LS-5 v2 Series - Page 72

Maximum CAN bus length
The maximum length of the communication bus wiring is dependent on the con󰈡gured
baud rate. Observe the maximum bus length.
(Source: CANopen; Holger Zeltwanger (Hrsg.); 2001 VDE VERLAG GMBH, Berlin und
O󰈠enbach; ISBN 3-8007-2448-0).
Baud rate Max. length
1000 kbit/s 25 m
800 kbit/s 50 m
500 kbit/s 100 m
250 kbit/s 250 m
125 kbit/s 500 m
50 kbit/s 1000 m
20 kbit/s 2500 m
Bus shielding
All bus connections of the easYgen are internally grounded via an RC element. Therefore,
they may either be grounded directly (recommended) or also via an RC element on the
opposite bus connection.
Fig. 70: Bus shielding (external RC element)
Troubleshooting
If data is not transmitting on the CAN bus, check the for the following common CAN bus
communication problems:
• A T-structure bus is utilized
• CAN-L and CAN-H are switched
• Not all devices on the bus are using identical baud rates
• Termination resistor(s) are missing
• The con󰈡gured baud rate is too high for wiring length
• The CAN bus cable is routed in close proximity with power cables
72 LS-5 v2 Series 37650
3 Installation
3.4 CAN Bus Interface
Released