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8.2.3 Measurement using data logging on USB stick (READY control
enabled)
When data logging on a USB stick is active, for each measurement a data entry is made on the USB stick
plugged into the rear of the DIGIFORCE
®
9311 (please see section 6.1.13 "USB flash" on page
Note:
If you wish to log the measurement data on the USB stick, you need to enable data logging in
each measurement program concerned.
If an access error for the USB stick occurs when USB-stick data logging is active (e.g. if the
USB stick has been removed), then "USB error" is displayed in the status indicator in
measurement mode.
You can opt to disable the READY control if you do not want USB-stick data logging to be
performed in sync with the READY signal (please see section 6.1.13 "USB flash" on page 57).
Diagram 93: Measurement with data logging on USB stick
*You can define a configurable PLC output for the signal "OUT_MEAS_ACT".
Note:
When data logging on USB stick is active, the *.csv file is generated and a "HEADER" saved in
the file after the first measurement. This introduces a one-off delay (READY = 1) of typically 1 to
2 seconds.
Cycle
a. Depending on the option selected, the DIGIFORCE
®
9311 uses an internal condition
or the control signal "IN_START" to start a measurement.
b. During the measurement phase the DIGIFORCE
®
9311 sets the signals "OUT_OK“
and "OUT_NOK" to 1 as well as the signal "OUT_READY" to 0.
The DIGIFORCE
®
9311 can signal the actual measurement phase using the output
"OUT_MEAS_ACT" = 1 (measurement active).
c. The evaluation phase in the DIGIFORCE
®
9311 starts once the active measurement
phase ends ("OUT_MEAS_ACT" = 0).
d. The DIGIFORCE
®
9311 updates the result during the evaluation phase:
e. "OUT_OK" = 1 and "OUT_NOK" = 0: measurement OK
"OUT_OK" = 0 and "OUT_NOK" = 1: measurement NOK
At the end of the evaluation phase, the instrument creates or accesses
the *.csv file on
the USB stick (please see section 6.1.13 "
USB flash" on page 57).
f. Once the evaluation phase and USB-stick data logging have finished, the
DIGIFORCE
®
9311 sets the signal "OUT_READY" to 1 (in standby).
Summary of Contents for DIGIFORCE 9311
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