Devicenet Drop or Trunk 2 pair bus

Devicenet Drop or Trunk bus cable is designed for use on Allen Bradley DeviceNet™ Systems. These cables have excellent electrical screening and incorporate two differently sized pairs: pair A for data transmission and pair B (larger) for power.

Two versions of this cable are available. The larger Trunk (or thick) version is used for backbone wiring and the smaller Drop (or thin) version is used to connect sensors, actuators and switching to the Trunk cable. LSZH (low smoke zero halogen) and LSF (low smoke and fume) versions for increased fire safety are generally available on request.

Note: low smoke zero halogen / halogen free (LSZH, LSOH, LSHF, OHLS) should not be confused with LSF (low smoke and fume), an in-depth explanation is shown on our LSZH Control Flex front page.


Construction – Devicenet Drop or Trunk
stranded tinned copper conductors
polyethylene (PE) core insulation
cores twisted into pairs
individual aluminium/polyester foil screens
common tinned copper drain wire
overall tinned copper wire braid screen
violet outer sheath as standard (material varies)


Technical – Devicenet Drop or Trunk
conductor sizes: Drop cable pair A (data) = 24awg &  pair B (power) = 22awg 
  Trunk cable pair A (data) = 18awg & pair B (power) = 15awg 
conductor make-up: Drop cable pair A = 19x 0.13mm &  pair B = 19x 0.16mm
Trunk cable pair A = 19x 0.25mm & pair B = 19x 0.34mm
hi-flex Trunk pair A = 40x 0.18mm & pair B = 84x 0.16mm
as AWG chart, see Stranding/Resistance page
voltage rating: 300V operating, 2000v test
pair A impedance: 120 Ohm (±12 Ω) @ 1 MHz (characteristic)
pair A capacitance: 39.8 nF/km @ 1kHz (wire/wire)
temperature range: -25°C to +80°C operating (based on PVC versions)
core identification: pair A (data) coloured red & black
  pair B (power) coloured white & blue

A printable PDF specification is available here: Devicenet Drop or Trunk 2 pair bus.


For more bus cables return to the Fieldbus Cables front page.


All measurements should be considered nominal and images for illustration purposes only. Although Central Cables Ltd has made every reasonable effort to ensure its accuracy, the information contained herein is subject to error or omission and to change without notice. In no event will Central Cables Ltd be liable for any damages whatsoever, arising in connection with the information described.