STC SmartScanIS, User Manual

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14 January 2021, SmartScanIS User’s Guide for Union Pacific, EUD-2016026-00 Rev.2
4.2.5 Operation
Commands are used to control the operation of the reader. Setup commands are sent from
the Controller module at power startup to configure the reader.
In data mode, the reader reads RFID tags and transmits data messages, such as tag IDs and
reports, to the Controller module. Reports provide information on input status changes (input0
and input1), a presence without tag report, and buffer overflow information. In data mode, the
Controller module will only send Command 01, which changes the reader from data mode to
command mode.
In command mode, the Controller module sends commands to the reader. These commands
control the operation and configuration of the reader. After the reader receives a command, it
sends an acknowledgment message. Typically, the acknowledgment message contains the
word Error, the word Done, or data relating specifically to the command request. These
messages may be of variable length since some commands require information as part of the
message.
4.3 2200-500 Presence Detector Module
Most SmartScanIS sites use a track circuit. If your site does, it also needs a 2200-500
Presence Detector module, which activates the SmartScanIS when a train is present at the
site. If your site is using two advance transducers instead of a track circuit, there is no
2200-500 Presence Detector.
On the outside of the SmartScanIS enclosure, mounting studs are provided for the 2200-500
Presence Detector. Directly below the 2200-750 Reader, the Presence Detector is secured to
the panel with four Keps-nuts. A cable connects the Presence Detector to terminal block
TB105 located inside the SmartScanIS enclosure. If your SmartScanIS was shipped in a
bungalow, you'll need to install the Presence Detector. If it was shipped in a crate instead, the
Presence Detector was already installed.