Decoder Family: SE8c
<html>The "CV" column in the table above shows "OpSw"
numbers, where the value "114." is pre-pended
<p>to the OpSw Number. For example, SE8c OpSw 1
is represented as "114.01".
<p><p>The top-most row above reflects the Board
Address configured on the "Basic" sheet.
<p><p>OpSw value 0 = "T"hrown. OpSw value 1 = "C"losed.
Board ID may be between 1 and 24 if using "Four Aspects per head" mode
or may be between 1 and 36 if using "Two aspects per head" mode.
<p>This roster entry will only access the specified SE8C if the
Board ID, on the "Basic" sheet, is correct when the
<p>programmer is opened.
<p>If the Board ID has been changed since
the programmer was opened, the programmer will attempt to access the
<p>SE8C address which was specified in the Roster entry
when the progammer was opened.
<p>After making a change to the Roster entry's Board ID
(Active Address) on the "Basic" sheet, save and close the programmer
<p>window and re-open the Roster entry to ensure that the
the programmer will use the modified Active Address for accesses
<p>to the device.
<p>Note that BDL16x and PM4x documentation refers
to Board Address, while DS64 and SE8C documentation refers to
<p>Board ID. These are equivalent concepts.
Basic SE8c OpSw Settings
<html><span style="color: black;"><h2><strong>Operating Mode</strong></h2></html>
<html><span style="color: black;"><h2><strong>Signal Head Characteristics</strong></h2></html>
<html><span style="color: black;"><h2><strong>LocoNet Characteristics</strong></h2></html>
<html><span style="color: black;"><h2><strong>Inputs Characteristics</strong></h2></html>
<html><span style="color: black;"><h2><strong>Outputs Characteristics</strong></h2></html>
<html><span style="color: black;">
<h2><strong>Notes on SE8C Roster Entries and Programming
<li>The SE8C <em>must</em> be in its normal
operating mode in order to respond to this Roster entry's read and
<p>See the "Basic" sheet for the programmer's limitations with
respect to Board Address.</li>
<li>This Roster entry is neither able to query nor change the SE8C
to determine the addresses which control the signals.
keep careful records of any such change to each SE8C's configuration.</li>
<li>When using "Four aspects per head" mode with the SE8C configured
with a Board ID in the range 13 thru 24 the SE8c
<p>will (by default)
control the signal heads using Switch addresses which cannot be
actuated by the typical LocoNet throttle.
<p>Similarly, when using "Two aspects per head" mode with the SE8C configured
with a Board ID in the range 18 thru 36, the
<p>SE8c will (by default) control the signal heads using
Switch addresses which cannot be actuated by the typical LocoNet
<p>If you wish to be able to control SE8C signal heads using a typical
throttle, be sure to use a Board ID number below the
<p>ranges listed above.
<p>This implied switch address configuration may be overriden
by setting OpSw17 to "Closed" and then issuing a turnout
<p>control message on LocoNet.
<p>See Digitrax SE8C documentation for details.</li>
<li>By default, the SE8C requires that its switch control
messages arrive on the LocoNet cable's low-voltage
<p>equivalent of the DCC track signals. This means that
the SE8C will only react to switch control messages
<p>on the DCC track signal, by default, so the command
station track power must be on. If using the SE8C
<p>on a "Standalone" LocoNet, it will be necessary to configure the
SE8C to take its switch control messages
<p>from "LocoNet messages",
instead of from the "DCC track signal".</li>
<li>JMRI's "SE8C Signal Head" assumes that the SE8C is
configured in "Four aspects per head" mode.</li>
<li>JMRI's support for flashing aspects on SE8C signal heads
assumes that the SE8C is configured for "Fourth aspect is
<p>Note that when JMRI is flashing a signal head, there will
be two LocoNet messages for each flash of the lamp. This can be
<p>a significant amount of LocoNet traffic if many signal heads are
<p>Additionally, the LocoNet switch commands are passed to
the DCC track signal by the command station. The command
<p>station can only process a limited number of LocoNet
switch control messages. When LocoNet traffic exceeds that
<p>capacity, the command
station will reject the switch control message. This can manifest
as "missed" flashes, "stuck lit"
<p>and "stuck off" signal heads, as well as excessive LocoNet
traffic. This problem may be mitigated by using the
<p>SE8C on a "Standalone LocoNet" and configuring the
SE8C to take switch control messages from "LocoNet messages".</li>
<li>For the purposes of this Roster entry, SE8C OpSws are listed as
This sheet intentionally un-populated. See the "OpSws" tab.
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