diamond - User Manual
Version: 8.0.0/1
Exported on: 24 October, 2023
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CAN A & CAN B (RJ45)
diamond supports two CAN bus speeds: CAN A (high speed) and CAN B (low speed).
CAN A
operates at 1Mb/s and is used, internally, to daisy-chain the control surface modules and, externally, to connect
another diamond frame.
CAN B
operates at 500Kb/s and is included to support products that cannot operate at a higher speed such as Lawo's
KSC and GPIO panels.
All CAN bus connections must be point-to-point; a switch or hub is not allowed.
Use a standard (straight 1:1) network cable: STP-CAT 5e with RJ45 connectors.
When daisy-chaining more than one frame, the
CAN A cable length must not exceed 13 meters
including the internal
wiring. This is explained in more detail below.
The maximum CAN B (low-speed) cable length must not exceed 60 meters.
The CAN bus can be hot-plugged and so the cabling can be performed while the frames are powered.
12V In (Kycon)
The 12V IN port connects to the external DC power supply (to power the frame).
M4x10 Grounding Screw
The M4 grounding screw
must be used to ground the frame
.
If not, then you may see some odd behaviours once the
console is
operational.
CAN A Bus Cable Length
To ensure the correct operation of the hardware components, the maximum CAN A (high-speed) cable length must not
exceed 13 meters including the internal wiring.
This becomes important when daisy-chaining more than one frame, as you must include the length of both the internal and
external cables.
The table below provides the internal CAN bus cable lengths for frames from 1 ME to 4 ME. These figures can be summed
to calculate the cable lengths for larger frames from 5 ME to 8 ME.
Internal CAN A Bus Cable Length
Frame Width
without Extension Modules
with Extension Modules
1 ME
0.903m +/- 10mm
1.203m +/- 10mm
2 ME
1.803m +/- 10mm
2.703m +/- 10mm
3 ME
2.703m +/- 20mm
3.303m +/- 25mm
4 ME
4.403m +/- 30mm
4.403m +/- 30mm
