Datamax Prodigy Plus Operator's Manual page 130

Temp this reading is the feedback voltage of the printhead
thermistor. At power up or in an idle condition, this value should be
in the range of 060 to 065. A reading of 175 is high and could
decrease the life of the printhead. An average amount of printing will
give readings that range from 070 to 120.
Pot this reading comes from the darkness potentiometer located on
the front panel board. It will vary from 000 (darkest) to 255
(lightest). Adjust this value for a midrange value of 128.
TOFA (Top of Form Adjustment) determines where the first
position of print begins on the label.
RIBN this value indicates the operation of the ribbon mechanism,
this value will vary.
RWND this value indicates the operation of the internal rewind
mechanism, this value will vary.
Counter Information is the values and dates of the absolute and
resettable counters.
Memory Configuration lists the current size of the 'Internal
Module' RAM in 4K byte blocks, and the 'Scalable Fonts' current
cache setup for scalable font calculations.
40 Prodigy Max Operator's Manual