Red Lion PAX2C - Manual (Page 14)

14
Nonlinear - Scaling Points (Greater than 2)
For non-linear processes, up to 16 scaling points may be used to provide a
piece-wise linear approximation. (The greater the number of scaling points used,
the greater the conformity accuracy.) The Input Display will be linear between
scaling points that are sequential in program order. Each scaling point has a
coordinate-pair consisting of an Input Value (INPt n) and an associated desired
Display Value (dISP n). Data from tables or equations, or empirical data could be
used to derive the required number of segments and data values for the
coordinate pairs. In the Crimson software, several linearization equations are
provided to help calculate scaling points.
SCALING STYLE
KEY key-in data
APLY apply signal
If Input Values and corresponding Display Values are known, the
Key-in (KEY) scaling style can be used. This allows scaling without
the presence of the input signal. If Input Values have to be derived
from the actual input signal source or simulator, the Apply (APLY)
scaling style must be used.
INPUT VALUE FOR SCALING POINT 1
-1999 to 9999
For Key-in (KEY), enter the known first Input Value by using the
! or @ arrow keys. (The Input Range selection sets up the decimal
location for the Input Value). For Apply (APLY), the existing
programmed value will appear. If this is acceptable, press the P key
to save and continue to the next parameter. To update/program this
value, apply the input signal that corresponds to Scaling Point 1, press @ key
and the actual signal value will be displayed. Then press the P key to accept this
value and continue to the next parameter.
DISPLAY VALUE FOR SCALING POINT 1
-1999 to 9999
Enter the first coordinating Display Value by using the arrow keys.
This is the same for KEY and APLY scaling styles. The decimal point
follows the dCPt selection.
INPUT VALUE FOR SCALING POINT 2
-1999 to 9999
For Key-in (KEY), enter the known second Input Value by using the
! or @ arrow keys. For Apply (APLY), the existing programmed
value will appear. If this is acceptable, press the P key to save and
continue to the next parameter. To update/program this value, apply
the input signal that corresponds to Scaling Point 2, press @ key and the actual
signal value will be displayed. Then press the P key to accept this value and
continue to the next parameter. (Follow the same procedure if using more than
2 scaling points.)
DISPLAY VALUE FOR SCALING POINT 2
-1999 to 9999
Enter the second coordinating Display Value by using the ! or @
arrow keys. This is the same for KEY and APLY scaling styles. (Follow
the same procedure if using more than 2 scaling points.)
ENABLE SCALE LIST
NO YES
When enabled, a second list of scaling points is active in the
selected parameter list for List A and List B.
StYL
INP
KEY
INPt
INP
0.000
1
dISP
INP
0.0
1
INPt
INP
1.000
2
dISP
INP
100.0
2
SLSt
INP
NO