Lenze DDS System bus CAN for PLC - Manual (Page 36)

System bus (CAN) for Lenze PLC devices
"CAN" system bus interface configuration
3−2
l
PLC−Systembus EN 2.0
3.2 CAN boot−up
If the initialisation of the system bus and the associated state change from Pre−operational to
Operational is not taken over by a higher−level master system, the PLC or a controller can be
designated as a "quasi" master to accomplish this task.
·
The configuration is effected via code C0352:
Code LCD Possible settings Information
Lenze Selection
C0352 CAN mst 0 0 Boot−up not active
1 Boot−up active
Device sends system bus boot−up
and thus is the "quasi" master.
Delay time for system bus initialisation (boot−up)
Some nodes (e. g. HMIs) require a specific starting time after mains connection before they can be
transferred to the Operational state via NMT commands by the master.
In order to ensure that even the node with the greatest starting time really is ready to receive NMT
commands, you can set a delay time. When it has expired, NMT commands can only be transmitted
after mains power−up.
·
The configuration of this delay time is effected via code C0356/1:
Code LCD Possible settings Information
Lenze Selection
C0356
1
CAN boot−up
3000
0 {1 ms} 65000 Delay time after power−on for
initialisation via the "quasi" master