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Troubleshooting 7-7MN1942
HTheintegrity ofthe CAN cables.
TheMicroFlex e100 s hould recover from the ‘passive’ state onc ethe pr oblemhas been rec tified
(thismay takes everal seconds).
TheCANopen bus is ‘off’:
This means that the internal CAN controller in the MicroFlex e100 has experienced a fatal
numberof T x and/or Rx errors, greater than the off threshold of 255. At this point the node will
haves witched itself to a state whereby it cannot influence the bus . Check:
H12-24Vis beingapplied between pin 9 (+24V) andpin 6 or 3 (0V)of theC AN connector, to
powerthe opto -isolators.
HThereis atleast one other CANopennode in the netw ork.
HThenetwork is ter minatedonly at the ends , not at intermediate nodes.
HAllnodes on t he network are running at the same baud rate.
HAllnodes hav e been assigned a unique node ID.
HTheintegrity ofthe CAN cables.
Torecover from the ‘off’ state, the source of theerrors must be remov ed and bus then reset. This
canbe done us ing the Mint BUSRESET keyword, or by resetting the MicroFlex e100.
The Manager node cannot scan/recognize a node on the network using the Mint
NODESCANkeyword :
Assuming that the network is working correctly (see prev ious symptoms) and the bus is in an
‘Operational’s tate, check:
HOnly nodes that conform to DS401, DS403 and other Baldor CANopen nodes are
recognizedby the Mint NODESCANkeyword. Other types ofnode will be identified with a type
“unknown” (255) when using the Mint NODETYPE keyword.
HCheck that the node in question has been assigned a unique node ID.
HThe node must support the node guarding process. MicroFlex e100 does not support the
Heartbeatpr ocess.
HTrypower -cycling the node in question.
Ifthe node in question does notconform to DS401 or DS403and is not a Baldor C ANopen node,
communicationis s tillpos sible using a set of general purpose Mint keywords. See the Mint help
filefor further details .
The node has been successfully scanned / recognized by the Manager node, but
communicationis still not possible:
For communication to be allowed, a connection must be made to a node after it has been
scanned:
HBaldorc ontroller nodes are automatically connected to after being scanned.
HNodesthat c onform to DS401, DS403 must have the connections mademanually using the
MintCONNECT keyword.
Ifa connec tion attempt using CONNECT fails then it may be because the node beingconnec ted
todoes not s upport an object which needs to be accessed in order to s etup the connection.