PSX-AR Manual Rev: P Software Rev: N
18
CV66 controls how the PSX-AR provides power to the track when the associated booster is
turned on.
• CV66=0 The PSX-AR output will always be OFF after the booster power up. This
is useful for staging and storage yards or similar layout sections where there is no
point in using booster power for equipment that will not be running. When needed,
the PSX-AR is turned ON by an Accessory Command.
o If a photocell is connected and CV50=0, then the photocell will always be
calibrated and disarmed. It will only control power output.
o If a photocell is connected and CV50=1, the photocell is enabled to control
both the PSX-AR power output and the PSX-AR Block Occupied output. With
this option, the photocell remembers its calibration at booster shutdown so
that the next power on session it will correctly identify if the block is occupied
[photocell covered] or not [photocell uncovered]. The photocell is NOT
calibrated and is disarmed
o If CV50=1, Block Occupied will flash when the photocell is armed. It will
become steady [on without flashing] when the photocell is covered and the
PSX-AR output is switched OFF [stopping train over photocell; Block
Occupied indicating OCCUPIED].
• CV66=1 The PSX-AR output will always be ON after the booster power up.
o If a photocell is connected, it will always be calibrated and disarmed
regardless of the value in CV50
• CV66=2 The PSX-AR output will assume the same state it was in when the
connected booster was last turned off.
o If the stored power down state is OFF, the PSX-AR will behave the same as
if CV66=0
o If the stored power down state is ON, the PSX-AR will behave the same as if
CV66=1
• CV66 default is 1. The PSX-AR will always power up and the photocell [if present]
will always calibrate and be disarmed.
• In the event that the photocell is calibrated while covered, it will mis-calibrate [it
assumes it is uncovered]. In most cases, simply waiting until the next time the
photocell is armed will solve the problem since it will perform a calibration before
arming. If you want to calibrate the photocell but NOT arm it, send an accessory
OFF command to the second PSX-AR address. Make sure the photocell is
uncovered when you issue the command. This is useful if you are using the
photocell for block occupancy detection.
CV67 is used to inhibit flashing of the Block Occupied output when the photocell is armed.
• If CV50=1 and CV66=0, the Block Occupied output will flash whenever the photocell
is armed. The PSX-AR power output is on.
• The flashing can be inhibited by setting CV67=1. Any other value of CV67 will
enable the flashing.
• CV67 default is 0 [flashing enabled].
Determining the software revision of your PSX-AR: The software revision of the PSX-AR is easily
determined. Simply place the unit in the program mode and turn it on. D6 will flash the Morse code
pattern of the software revision letter. The PSX-AR will flash long-short for revision N.
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