JMRI: LocoNet Slot Monitor
Author: Bob Jacobsen
Keywords: JMRI help loconet slot monitor

# LocoNet Slot Monitor

The Slot Monitor tool displays a table of the "command station slots'" contents. Slots are used to control individual locomotives and consists. The display includes the decoder's speed step format, current speed and function settings, consist information and status. You can choose to show either all slots or just the ones being actively used.

The checkboxes at the top allow you to show just the active (in use) slots, or all locomotive slots. You can also choose whether to show the "system" slots which don't carry locomotive information.
The "Estop All" button sets the speed of all the locomotives to "Emergency Stop" in one action.
The "Release all unused slots" button (not visible in this screen shot) will reclaim extra slots in the Command Station.

The columns are:

Slot
  The number of the slot
E Stop
  Click this button to set the speed of the decoder to emergency stop
Address
  The address of the locomotive the slot controls
Speed
  For unconsisted locomotives and addresses that are the top of a consist, this is the current speed setting. It's an internal value for consisted slots.
Status
  The format of the commands being sent to the decoder, typically either 128 step, 28 step, or 14 step, though other values are possible.
Use
  Displays one of four possible states:
  Free
    Not reserved for any particular use, no contents
  Idle
    Not reserved for any particular use, no contents
  Common
    Not in use at the moment, but still contains valid data for the last decoder to use it.
  In Use
    Currently controlling a decoder
Free
  Click this button to free the slot, so it can be reused for another locomotive.
Consisted
  Displays the consist status of the slot, whether it's not consisted, the top of a consist, included in a consist, etc.
Throttle ID
  The ID of the throttle using this slot. It's displayed as two hexadecimal bytes. The second pair can be configured into the throttle, see the Digitrax instructions.
Direction
  Whether the decoder is currently being commanded to go Forward or Reverse.
F0-F8
  The current function settings. A check mark indicates a function is On.