Echelon DM-21 Device Manager - Manual (Page 38)

3-18 Network Cabling and Base Plate Installation
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Jumper Plugs (x-ray view)
2 1A 1A
Type 2D Type 1D Type 1D
Figure 3.17 - Mixing Type 1D and Type 2D Router Base Plates
The reason for this limitation is that only the right Jumper Plug connector on a
Type 2D Router Base Plate bridges the network connection; the left Jumper Plug
connector on a Type 2D Router Base Plate bridges only the power connection.
This arrangement permits several routers, each with a different channel type, to
be mounted on a common DIN rail and share a common power supply. Figure
3.18 shows mounting configurations that are problematic and must be avoided
because the router will be unable to communicate with the other LonPoint
modules via the Jumper Plug.
If such a mounting arrangement must be used, then the base plates must be
interconnected using wiring instead of the Jumper Plug.