WirelessHART WHA-GW-F2D2-0-A-Z2-ETH, Manual, Page: 28 / 127

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Installation
Straight-Through or Crossover Wiring
Depending on the network topology, use straight-through or crossover wiring to connect the
WirelessHART gateway to an Ethernet access point. Note that newer Ethernet hubs, switches,
and routers are able to detect whether straight-through wiring or crossover wiring has been
used and adjust the pinout automatically if necessary.
Wiring with a T568A Plug
Witing with a T568B Plug
3.6 Preparing RS-485 Connection
The WirelessHART gateway is equipped with a fully galvanic isolated RS-485 interface. Note
that the maximum length of the cable running from the WirelessHART gateway to the process
control system is 1200 m or less, depending on the cable type and transfer rate. Use shielded
twisted pair (STP) cables only. Ensure sufficient relief of tension on the cables during
installation and note the minimum bending radii of the cables.
Terminal block an
WirelessHART gateway Straight-through Crossover
T1 Brown Brown
White/brown stripe White/brown stripe
T2 Blue Blue
White/blue stripe White/blue stripe
RX- Orange Green
RX+ White/orange stripe White/green stripe
TX- Green Orange
TX+ White/green stripe White/orange stripe
SHD Cable shield Cable shield
Terminal block an
WirelessHART gateway Straight-through Crossover
T1 Brown Brown
White/brown stripe White/brown stripe
T2 Blue Blue
White/blue stripe White/blue stripe
RX- Green Orange
RX+ White/green stripe White/orange stripe
TX- Orange Green
TX+ White/orange stripe White/green stripe
SHD Cable shield Cable shield