Communication Guide, ©ComAp – March 2014 79
IGS-NT Communication Guide 03-2014.pdf
CAN bus extension options
CAN/fiber optic converter
Extends CAN bus length by 2000m.
Recommended converters
ADF Web HD67181FS or HD67181FSX (www.ADFweb.com)
http://www.adfweb.com/home/products/optics_fibres_can_bus_repeaters.asp
It is simple converter without redundant power supply. It has no alarm contact.
Wide Power Supply voltage: 8-19VAC or 8-35VDC. DIN mounting. Multimode version only.
Number of converters in cascade is limited. Tested 4 optical links (8 converters) in cascade
with no problem with communication. However “star” topology is better to use.
Recommended settings
Use converter Baud Rate Setting to 250k if setpoint Comms setting: CAN bus mode is set to 32C in
controllers:
Use converter Baud Rate Setting to 50k if setpoint Comms setting: CAN bus mode is set to 8C in
controllers:
CAUTION!
This device can extend total CAN bus length by 2000m (HD67181FSX only) using optical link, but total
length of metalic CAN bus must not exceed these values: