EUD-2016026-00 Rev.2, SmartScanIS User’s Guide for Union Pacific, 14 January 2021
149
8.14.2 Connecting the Wind-Monitor Hardware
Attaching the wind monitor to the SmartScanIS involves four wires and two resistors. Making
the RS485 connection to the SmartScanIS involves using two of its
TB3
terminals. One
terminal is labeled RX and the other one is labeled RX with a bar over it. In the bulleted list
below, they are referred to as RX and RX-BAR, respectively.
Connect the wind monitor's
EARTH
terminal to an earth ground.
Connect the wind monitor's
+PWR
terminal to a 12-volt power source.
Connect the wind monitor's leftmost
REF
terminal to ground.
Connect the wind monitor's
A
terminal to the SmartScanIS
RX
terminal.
Connect the wind monitor's
B
terminal to the SmartScanIS
RX-BAR
terminal.
The firmware doesn't poll the wind monitor while the user is using the serial interface.
Otherwise, the firmware polls the wind monitor every 15 seconds.
Содержание SmartScanIS
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