Rockwell Automation 1500 DeviceNet MV Controllers Installation Instructions - Manual (Page 16)

4-4 Linking DeviceNet Communication Cables in Medium Voltage Controllers
1500-IN057C-EN-P – June 2013
General
If any MV controller units are relocated such that the termination
resisters are no longer at the end of the trunk line, then they must be
removed and re-installed at the end of the lineup. A unit that is added to
either end of the lineup must also have the termination resister relocated
from the existing end unit to the added unit. The number of and type of
sections shown below is arbitrary and for illustration purposes only.
Drawings are not to scale.
If you have questions about re-installing termination resisters into the
trunk line of your MV controller line-up, contact Rockwell Automation
technical support.
Unit added
to right end
of lineup
Unit added
to left end
of line-up
Existing left
end section
of lineup
Existing right
end section
of lineup
Termination resistor moved to end unit when adding unit(s).
Unit added
to right end
of lineup
Unit added
to left end
of line-up
Existing left
end section
of lineup
Existing right
end section
of lineup
Termination resistor moved to end unit when adding unit(s).
Figure 4.2 – Re-location of Terminating Resistors (when additional units are added to MV Controller Line-up)
Re-location of
Termination Resistors