Lenze 8400 TopLine - Manual (Page 852)

14 Axis bus
14.3 IO axis bus
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Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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14.3.1 "Master/slave" function
With this setting, the IO axis bus can be used as "release cord", i.e. each node can set all other nodes
into an error status.
One IO axis bus node takes over the master role. The master's task is to output a synchronisation
cycle to the IO axis bus to which the slaves can orient themselves:
[14-4] IO axis bus: Synchronisation cycle from the master (error-free status)
The controller is configured as master or slave in C02440/1 or by selecting "1: Master" or "2: Slave".
Synchronisation of the internal time base
The internal time base of the slaves can be synchronised via the IO axis bus. The slaves orient
themselves to the synchronisation cycle output by the master:
[14-5] Synchronisation cycle
• In order that the IO axis bus is used as synchronisation source, all slaves must be set to
"AxisBusIO" in C01120 .
• The internal time base is synchronised based on the HIGH edge in a 2-ms cycle (see
illustration above).
• Internal timing and trimming of the phase position are set automatically.
• Basically, only one source is allowed to synchronise the internal time base. If "AxisBusIO" is
selected, this is the IO axis bus master.
Error-free status
In the error-free status, all nodes are error-active, i.e. each node can set the IO axis bus into the
"Error" status.
W
9
9
—V —V —V —V —V —V
W
9
9
—V —V —V —V —V —V
6<1& 6<1& 6<1&
PV PV

More information on this subject can be found in the following main chapter
" Synchronisation of the internal time base ". ( 857)