KEYENCE LS-7000 - Manual (Page 89)

4-37
Chapter 4 Function Settings
4
■ Auto Peak Hold
• Auto peak hold: The maximum value measured by the LS-7000 Series in
continuous measurement operation is displayed and output.
• Auto bottom hold: The minimum value measured by the LS-7000 Series in
continuous measurement operation is displayed and output.
• Auto peak-to-peak hold: The maximum-to-minimum value measured by the LS-7000
Series in continuous measurement operation is displayed
and output .
Auto peak hold measured value
Internal
measured value
Judgment Judgment
Measured value
t
RESET
processing
ON
OFF
Timing input
Waiting for judgment
(---------- displayed)
Measured value
ON
OFF RESET input
ON
OFF
Comparator output
ON
OFF
RS-232C output
Judgment awaiting output
(Comparator waiting output)
• Comparator output turns ON according to the measured value.
• In the above chart, the ON status of each output means that NPN open collector output is ON, provided
that it is normally open type. If it is normally closed type, the signal will be inverted.
• The ON status of each input means that the input is short-circuited to the COM terminal.
• RS-232C output is ON in synchronization with timing input if the D-SEND item as an environment setting is
set to S1 or S2 only. Refer to Data Transmission Mode on page 5-9 for environment settings in detail.
• For strobe output in detail, refer to Strobe Output Time on page 4-48.
• For BCD output in detail, refer to BCD Output on pages 6-9 and 6-13.
• If timing input is ON during reset processing, the monitor will display the result waiting status “---.-----.”
• If RESET input is ON while timing input is ON, awaiting the result of meas-
urement, the monitor will display the result waiting status “---.-----” until the
timing input is turned OFF.
• Timing input and reset input can be under RS-232C control. Refer to page
7-8 for details.
• If a workpiece is missing and there is a period without the internal measured
value obtained, the monitor will display the result waiting status “---.-----.” The
LS-7000 Series will start measurement with the previous auto peak value
maintained when the internal measured value is obtained.
Tips