To Next Page

To Previous Page

Functions

3.8 Node guarding

Provided protocol with which a CAN node can inquire the current status of any node. It be-

longs to the network management functionality (NMT) of the CAN node and is referred to as

node guarding. The G6 CAN control board supports the Node-Guarding. The node guarding

requestisdepositedonthenodeguardingidentierbyaremoteframe.Theresponsearrives

asdatatelegramwith1bytedataonthesameidentier.Thedatabytecontainsthenode

status plus one toggle bit (MSBit), which is inverted from message to message. Each node

hasitsspecialnodeguardingidentier.

NodeGuardingIdentier = 1792 + Node-Id

Value of the node status Meaning

1 DISCONNECTED

2 CONNECTING

3 PREPARING

4 PREPARED

5 OPERATIONAL

127d PRE_OPERATIONAL

3.9 Life guarding

The G6 CAN control board supports the life guarding. It is a monitoring of the cyclic node

guardingtheCANmaster.Forthisreason,lifeguardingshouldonlybeactivatedduringcy-

clic node guarding. The life guarding operates completely detached from all other monitoring

functions. It is activated by the product of the two parameter values guard time and life time

factor. Shows the product = 0, then the life guarding is not activated. Otherwise the product

speciesthelifeguardingtimeouttime.Withactivatedlifeguardingthenodeguardingmon-

itoringstartsassoonastherstnodeguardrequestisreceived.Thefunctionthatisexe-

cuted upon occurrence of the life guarding timeout is adjustable by two further parameters

(LifeGuardTout.Addr, LifeGuardTout.Data). It concerns on the one hand to a write access to

anyparameterintheinvertercontrolandfurthermoretoafunctioncodethatdenes,which

operationshallbeexecutedinthecontrol.Ondeliverylifeguardingisdeactivatedviaparam-

eter LifeGuardTout.Addr.

KEB COMBIVERT G6 Programming Manual

Other manuals for KEB COMBIVERT G6