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10.2.3 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 front of the DIGIFORCE

9311 (please see section 6.3.1.1 “USB flash” on page 47).

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 the "ERR-LED" is activated and the "READY" signal is no

longer indicated.

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 6.3.1.1 “USB flash” on page 47).

Diagram 89: 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 and 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 DIGIFORCE

9311 creates or accesses the

*.csv file on the USB stick (please see section 6.3.1.1 “USB flash” on page 47).

f. Once the evaluation phase and USB-stick data logging have finished, the

DIGIFORCE

9311 sets the signal "OUT_READY" to 1 (in standby).

Burster Digiforce 9311-V2 Series User Manual

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