Lenze 8400 TopLine - Manual (Page 842)

14 Axis bus
14.2 Data transfer axis bus
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Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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14.2.4.1 Required settings at the master
For a "safe" data transfer, one controller must be the master in the network. The master controls and
synchronises the network.
Make the following two settings for the controller which is to be the master in the network:
• Axis bus address ( C02430/1 ) = "1"
• With this setting, the controller automatically takes over the control in the network.
• Only one master is allowed in the network.
• Axis bus IO function ( C02440/1 ) = "1: Master"
• With this setting, the controller outputs a synchronisation cycle to the I/O axis bus to which
the slaves can orient themselves.
Optional: Synchronisation of the internal time base of the master
For the master, a sync signal source (e.g. CAN or MCI) can be selected in
C01120 .
• Then, the entire axis bus system behaves synchronously with this sync signal.
• The sync signal source "2: AxisBusIO" technically does not make any sense for the axis bus
master and is thus ignored (same effect as with setting "0: Off").
Related topics:
 "Master/slave" function ( 852)
 Synchronisation of the internal time base ( 857)
14.2.4.2 Required settings for the slaves
Make the following settings for every slave controller in the network:
• Axis bus address ( C02430/1 ) = "2" ... "62"
• Make sure that all controllers connected to the axis bus have different axis bus addresses.
• Sync signal source ( C01120 ) = "2: AxisBusIO"
• With this setting, the synchronisation cycle output by the master is used as synchronisation
source.
• Basically, only one source is allowed to synchronise the internal time base.
• Axis bus IO function ( C02440/1 ) = "2: Slave"
• This setting serves to define the slave.

Note!
The selection of the "2: AxisBusIO" sync signal source serves to permanently set the
parameters given in the following table for synchronising the internal time base to
reasonable values in order to ensure a technically perfect operation of the axis bus!
Parameter Info Setting for "AxisBusIO" signal source
Value Unit
C01121 Sync cycle time setpoint 2000 μs
C01122 Sync phase position 200 μs
C01123 Sync window 40 μs