SIC24 - Signal &
Indicator Controller
The SIC24 (Signal and
Indicator Controller) is uniquely suited to control
various types of signals and indicators on a layout or a
CTC panel. It can be used as a signal controller, to
indicate block occupancy and turnout position, and as a
grade crossing gate controller with flashing signals.
Combinations of some of these features are also possible.
The SIC24 is compatible with many DCC systems* (see
below).
MSRP - 54.95 USD
Manual in PDF format - 400K
Color
Picture
Board size: 2.2" X 4.0"
Features:
Control signals on your layout
• Built-in logic for automatically controlling
signals using block detection
• Configurable to model many signaling systems
• Computer not required, but can be used with one
Control indicators on your layout or CTC panel
• Block detection
• Turnout status
• Crossing gate and flashers
Provides 24 outputs
• Drives up to eight 3 LED signal heads with common
anode or common cathode
• Drives Bi-color LED searchlights with 2 or 3
leads.
• Drives Tortoise™ switch machines for turnout
control
• Drives Tortoise™ switch machines for
semaphore signal control including the middle yellow
aspect.
Provides 8 inputs
• For local turnout control.
• For occupancy sensors
• For turnout feedback sensors
Simple inter-board wiring
• Serial bus reduces system wiring
• Digitrax LocoNet® compatible
Simple basic setup
• Built-in setup configuration options
• "Smart Programming" in conjunction with self
programming
The SIC24 sends and receives switch command, switch
position feedback and sensor/block detection messages. It
uses these same type messages to communicate between
multiple SIC24s and to determine signal states. Since all
communication is done over a serial bus, the number of
wires to implement a signal system is greatly reduced.
The serial bus is based on Digitrax’s LocoNet® and
some features are unique to a Digitrax system. However, a
Digitrax DCC system is not required for operation or
programming. The SIC24 is compatible with LocoNet® block
detectors such as the Digitrax BDL16 or detectors
connected to its inputs such as the Team Digital DBD22 .
Operation:
The SIC24 has 24 outputs. Each output can drive an LED
and can be assigned a specific function. For signal
control, a three color aspect signal will require three
outputs if each aspect is to be individually controlled.
Typical signal control is based on some set of rules or
logic to turn each LED on. Consequently, some logic is
required to turn on and off each output. In order to
accomplish this, the SIC24 has a logic cell that controls
each output. The logic is programmable using CVs. So you
can control almost any kind of signals.
There are several build in selectable setups so that
individual CV programming may not be necessary. These
include block signals, block signals with a siding, block
occupancy indication, grade crossing and block
searchlight signals.
The SIC24 has eight inputs. Each input can be configured
to send a switch command, switch position feedback or
sensor/block detection serial bus message. The inputs are
compatible with many stand-alone block detectors with
noise filtering. Each input can be configured to send a
message on a rising, a falling or a change of state
signal. Unique signal schemes can be implemented using
the SIC24 by connecting outputs to inputs, particularly
if an input is configured to send a message on a rising
or falling state.
Programming:
The SIC24 can be very challenging to program because of
it's logic capability. To assist in programming, there
are several built-in setup options. The setups are
implemented using "Smart Programming" in conjunction with
self programming. By entering several switch commands
from the throttle, one of the setups is selected and
configured. Once selected, the logic is automatically
determined and all the required CVs programmed. The SIC24
comes pre-programmed for block signaling (ABS) of three
aspects per signal which is one of the setups.
"Smart Programming" can be done via the main track or via
LocoNet®.
Programming in page mode can be done using the
programming track or via LocoNet®. Ops mode
programming is also available via LocoNet®. CV read back
using the programming track may work in some cases, but
it is not supported by Team Digital because it is not
reliable.
Compatibility:
The SIC24 is not compatible with the Atlas, Backmann or
MRC (except Prodigy Advance) DCC systems because they do
not support accessory commands or can not program the
number of CVs in the SIC24.
