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54
4-2-4 Prescaling Menu (
pscl
)
Bank No. of Prescale
Prescaling Value X (Mantissa) of Input A
Prescaling Value Y (Exponent) of Input A
Prescaling Value X (Mantissa) of Input B
Prescaling Value Y (Exponent) of Input B
Decimal Point Position
To display rotational speeds, circumferential speeds, or other values based on
input pulse calculations, the rotational speed must be multiplied by a factor input
before the input pulses are measured. This factor is called a prescale value.
Display value = Measured data x Prescaling value
Prescaling values can be set within a range between 0.0001 x 10
–9
and 9.9999 x
10
9
.
Example:
Setting prescaling value with the input of two pulses per revolution.
Unit:
rpm
Operating Mode: 1
Object to be measured
Proximity
Sensor
Two pulses are output per revolution. Therefore, the prescaling value is calcu-
lated: 0.5 x 10
0
= 5.0 x 10
–1
p.bank
=
off
ps.ax
=
5.0000
ps.ay
=
10 Ć1
Note
Use prescaling banks 1 through four if more than one prescaling value needs to
be set.
Input type
Setting
Default
p.bank
:
Bank no. of prescale
OFF/1 to 4
OFF
ps
*
.ax
: Prescaling value X (mantissa)
of input A
0.0001 to 9.9999
1.0000
ps
*
.ay
: Prescaling value Y (exponent)
of input A
–9 to 9
0
ps
*
.bx
: Prescaling value X (mantissa)
of input B
0.0001 to 9.9999
1.0000
ps
*
.by
: Prescaling value Y (exponent)
of input B
–9 to 9
0
decp.
*
: Decimal point position
Operating modes 3 and 4:
One of the 1st to 3rd digits
from the right
Other modes:
One of the 1st to 4th digits
from the right
No decimal
point
position
setting
p.bank
ps
*
.ax
ps
*
.ay
ps
*
.bx
ps
*
.by
decp.
*
FUNCTION
SETTING
Setting Mode
Section 4-2