Conair GB - Manual (Page 60)

If you know ONE bar code input is required before a new cycle is
initiated, set this parameter to 00001. The blender is then prevented
from operating until one single valid input is received. If two inputs
are expected, set this parameter to 00002, etc. When set to any value,
the blender will not operate until the required number of scanned
inputs are received.
======================================================================
XCV + XRC For Extrusion Control Systems only.
XCV, "Extruder speed Control Voltage" is used in conjunction with
our extrusion control software. This number can range from 0 to 1000
(XCV 00000) to XCV 01000), and determines the voltage outputed on pin S
of the Amphonol connector. Pin R is the neutral or zero reference for
this voltage output.
The voltage ranges from 0 to 10 volts. 01000 = 10.00 volts. This
parameter can be set manually, however it is intended to be controlled
by the extrusion control logic or by MLAN communications in conjunction
with our extrusion control software.
Whenever the software control logic makes a change to this
voltage, up or down, the controller display will say (RAMPING) during
the time the voltage is being adjusted.
XRC, "Extruder speed Rate of Change", determines the ramp up or
ramp down rate of the XCV parameter, above. It can range from 0 to 10
(XRC 00000) to (XRC 00010). Default setting is 00004.
When XCV changes, it does so gradually, making small incremental
changes every 10 interrupts, or about 24 incremental changes per
second. The XRC parameter determines the maximum value of each
incremental change. For example, if XRC is set to 1 then the XCV
number will increment by 1 count (0.01 volt) every 10 interrupts, for a
rate change of 24 counts (0.24 volt) per second, which will produce a
full range change from 0 to 10 volts over about 41 seconds.
======================================================================
TCV + TRC For Extrusion Control Systems only.
These parameters control a second 0 to 10 volt voltage output on
for controlling downsteam equipment Takeoff speed. They operate the
same as the XCV and XRC covered above except they move in the opposite
direction, higher to reduce weight per foot, lower to increase weight
per foot.
======================================================================
XTP For Extrusion Control Systems only.
The LAST THREE digits of the XTP parameter specify the TRIP POINT
when software will make an adjustment to the throughput rate number,
which will then cause a change in extruder speed. Speed is held steady
until there is significant indication that the throughput rate is
incorrect. The software analyzes each batch watching for any
meaningful deviation from current controlling rate. These last two
digits of this parameter specify the accumulated error, indicated as a
percent of full batch weight, required to trip a change. For example,
Page 61