EnerSys Alpha Cordex CXC HP - Default System Values and Ranges; 12 Volt System Default Values and Ranges; Figure 24-2 CAN Network Topology; Figure 24-3 Alpha CAN Connector

Cordex®CXCHPControllerSoftwareManual|24-Cordex®CXCHPcontrollerreferenceguide
Figure 24-2 CANnetworktopology
CAN_H
CAN_L
120 Ohms
120 Ohms
Node n
Node 1
Node 2
What is CAN power?
CANpowercanbesuppliedthroughCANbus.OptionallyapowersupplyfortheCANbusmodulescan
bearrangedseparately.ThepowersupplywiringcanbeeithertotallyseparatefromtheCANbuslines
usingtwo,two-wirecablesoritcanbecombinedwiththeCANbuslinesintoasinglefour-wirecable.
CANbuscablingisavailablefrommultiplevendors.
How are Alpha® CAN cables wired?
TheAlpha®CANconnectorisa6P6Coffsetlatchmodularconnector.Themaleconnectorsarecalled
plugsandthefemaleconnectorsarecalledjacks.Youmayalsoheartheseconnectorsreferredtobytheir
registeredjack(RJ)equivalent:RJ11,RJ14,andRJ25areallphysicallycompatiblewith6P6Cmodular
connectors.ThefollowingfigureshowstheCANpinoutfora6P6Coffsetlatchmodularplug.Pins1and6
areusedforCANpowerwhilepins2and4areusedforCANsignaling.
Figure 24-3 Alpha®CANconnector
1
2
3
4
5
6
1CANGround
2CANHigh
3Reserved
4CANLow
5Reserved
6CAN+5V
Are there distance limitations?
TheelectricalcharacteristicsofatypicalCANbuscablerestrictthecablelength.Werecommendhaving
nomorethanonelongCANcableonaCANbusandtorestrictthelengthofthatlongcabletolessthan
100meters(328feet).
Is the number of nodes (modules) limited?
CANallowsupto127modulesperbus.
Where can I get more information about CAN?
CANisspecifiedbytheInternationalStandardsOrganization(ISO)standardISO11898.
24.3. Default system values and ranges
Thefollowingsectionprovidestablesofthedefaultvaluesandrangesforsupportedsystems.
24.3.1. 12 volt system default values and ranges
Thistableprovidesthedefaultvaluesandrangesfora12voltsystem.
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