familyname=SE8c manufacturer=Digitrax definitionSource=JMRI LOCONETBDOPSWMODECV=1,"Board IDBoard IDs may be in the range 1-24 or 1-36, depending on the number of aspects per head" CV=114.01,","","SE8c Mode","","Reserved"" CV=114.02,","","Four aspects per head","","Two aspects per head"" CV=114.03,","","Thrown","","Closed"" CV=114.04,","","Thrown","","Closed"" CV=114.05,","","Thrown","","Closed"" CV=,"" CV=114.06,","","Thrown","","Closed"" CV=114.07,","","Thrown","","Closed"" CV=114.08,","","Thrown","","Closed"" CV=,"" CV=114.09,","","Thrown","","Closed"" CV=114.10,","","Thrown","","Closed"" CV=,"" CV=114.11,","","Pulsed outputs","","Static outputs for Semaphores or slow-motion turnout machines"SMTM outputs are" CV=114.13,"Detection Section reporting is" CV=114.14,","","DCC Track Signal (RailSync wires in LocoNet cable)","","LocoNet messages"Switch messages are taken from" CV=114.15,","","toggle the corresponding SMTM0x outputs","","are ignored"DS0x inputs" CV=114.21,"Signal Head Test Pattern is" OpSwsShort Addressgt0The "CV" column in the table above shows "OpSw" numbers, where the value "114." is pre-pended

to the OpSw Number. For example, SE8c OpSw 1 is represented as "114.01".

The top-most row above reflects the Board Address configured on the "Basic" sheet.

OpSw value 0 = "T"hrown. OpSw value 1 = "C"losed. Basic

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.

This roster entry will only access the specified SE8C if the Board ID, on the "Basic" sheet, is correct when the

programmer is opened.

If the Board ID has been changed since the programmer was opened, the programmer will attempt to access the

SE8C address which was specified in the Roster entry when the progammer was opened.

After making a change to the Roster entry's Board ID (Active Address) on the "Basic" sheet, save and close the programmer

window and re-open the Roster entry to ensure that the the programmer will use the modified Active Address for accesses

to the device.

Note that BDL16x and PM4x documentation refers to Board Address, while DS64 and SE8C documentation refers to

Board ID. These are equivalent concepts. Basic SE8c OpSw Settings

Operating Mode

Signal Head Characteristics

LocoNet Characteristics

Inputs Characteristics

Outputs Characteristics

Notes

Notes on SE8C Roster Entries and Programming

  • The SE8C must be in its normal operating mode in order to respond to this Roster entry's read and write operations.
  • See the "Basic" sheet for the programmer's limitations with respect to Board Address.

  • This Roster entry is neither able to query nor change the SE8C to determine the addresses which control the signals.

    Users should keep careful records of any such change to each SE8C's configuration.

  • When using "Four aspects per head" mode with the SE8C configured with a Board ID in the range 13 thru 24 the SE8c

    will (by default) control the signal heads using Switch addresses which cannot be actuated by the typical LocoNet throttle.

    Similarly, when using "Two aspects per head" mode with the SE8C configured with a Board ID in the range 18 thru 36, the

    SE8c will (by default) control the signal heads using Switch addresses which cannot be actuated by the typical LocoNet

    throttle.

    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

    ranges listed above.

    This implied switch address configuration may be overriden by setting OpSw17 to "Closed" and then issuing a turnout

    control message on LocoNet.

    See Digitrax SE8C documentation for details.

  • By default, the SE8C requires that its switch control messages arrive on the LocoNet cable's low-voltage

    equivalent of the DCC track signals. This means that the SE8C will only react to switch control messages

    on the DCC track signal, by default, so the command station track power must be on. If using the SE8C

    on a "Standalone" LocoNet, it will be necessary to configure the SE8C to take its switch control messages

    from "LocoNet messages", instead of from the "DCC track signal".

  • JMRI's "SE8C Signal Head" assumes that the SE8C is configured in "Four aspects per head" mode.
  • JMRI's support for flashing aspects on SE8C signal heads assumes that the SE8C is configured for "Fourth aspect is

    Dark".

    Note that when JMRI is flashing a signal head, there will be two LocoNet messages for each flash of the lamp. This can be

    a significant amount of LocoNet traffic if many signal heads are flashing.

    Additionally, the LocoNet switch commands are passed to the DCC track signal by the command station. The command

    station can only process a limited number of LocoNet switch control messages. When LocoNet traffic exceeds that

    capacity, the command station will reject the switch control message. This can manifest as "missed" flashes, "stuck lit"

    and "stuck off" signal heads, as well as excessive LocoNet traffic. This problem may be mitigated by using the

    SE8C on a "Standalone LocoNet" and configuring the SE8C to take switch control messages from "LocoNet messages".

  • For the purposes of this Roster entry, SE8C OpSws are listed as "CV"s.
CVsCVCV-TabelleTaula-CVTabulka CVCV-tabelShort Addresseq0This sheet intentionally un-populated. See the "OpSws" tab.