2
1-1
Features
The K3NP Period Meter displays pulse input after performing the numeric con-
version of the input.
The K3NP has the following functions.
Measurement
The internal system clock counts the period between pulses or pulse-ON time
and displays it in a variety of modes.
In the following example, the internal system clock counts the time (T) between
pulse INA and pulse INB. If there are 100,000 counts during the time (T), a pass-
ing speed (F1) of 1,200 (m/min) will be displayed according to the following cal-
culation.
T = 1 system clock count (0.5
m
s) x 100,000 = 0.05 s
F1 = 1/T x 60 (m/min) according to the internal calculation method.
Therefore, 1/0.05 s x 60 = 1,200 (m/min)
Example: Passing Speed F1
Internal system
clock
Prescaling
Input pulses are converted into a value within a specified range.
Comparison output patterns can be selected from the standard, level, or zone
output depending on the application.
Refer to
Comparative Output Patterns,
page 61.
Refer to
Linear Output Range
, page 64.
BCD Output
A digital data output format where every four binary bits is numerically equivalent
to one decimal digit.
Refer to
Section 7 BCD Output
.
Refer to the
Communications Manual
.
HOLD is an external input which is used to stop the A/D process and freeze the
display. The comparative, linear, and BCD outputs are also retained.
Refer to
5-3 External Input Signals
for details.
RESET is an external input to reset to the initial state and the present maximum
and minimum values. Resetting can be performed using the front panel keys.
Refer to pages 85 and 86.
Output Test
This function is convenient for checking a system to which the K3NP is con-
nected, especially when some inputs cannot be operated. The K3NP simulates
an input to check the output conditions.
Refer to
6-2 Test Mode
for details.
Remote/Local Selection
The K3NP can be operated remotely through a host computer or locally with key
inputs.
Remote Mode: For programming remotely by downloading setup parameters
from a host computer via RS-232C, RS-485, or RS-422.
Local Mode:
Programming is performed with the front panel key input.
Refer to
Remote/Local Programming
, page 67.
Comparative Output
Selection
Linear Output
Communications Output
HOLD
RESET
Features
Section 1-1
Содержание K3NP
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