Datalogger Control Menu Structure; Output Datalogger; Circular Memory - Siemens SITRANS FUS1020 Manual

Nema-4/ip 65 clamp-on transit-time flowmeter

Table of Contents

Section 6

Datalogger Control

Output Datalogger

This menu cell allows you to send the Datalogger contents to an external device (usually a computer or

printer) via the meter's RS-232 Serial I/O port. This command is effective only after a successful

install. In addition, you have to enable datalogging and select data items in the [Datalogger Control]

menu. Note: This command sends the data collected by both channels of a dual-channel system.

Therefore, you should include [Site ID] (current site setup name), [Date] and [Time] in your report so

that you can identify the source of each report.

The 1020 meter interfaces with most serial printers or personal computers. Siemens offers the Model

996P portable serial printer. You must use the proper cabling between the flow computer and the

external device. In addition, you must configure the [RS-232 Setup] menu cell correctly (see paragraph

6.10.8 RS-232 Setup).

You should turn off the Datalogger function before you transmit an extensive printout. This will avoid

contaminating the printout with new Datalogger data. Datalogger reports are sequential ASCII text files.

NOTE: The meter suspends flow measurement while it transmits serial data.

To send Datalogger contents to the RS-232 Serial Port:

Check the flow computer-to-external device connections and your RS-232 Setup parameters

(see paragraph 6.10.8 RS-232 Setup).

To access the [Output Datalogger] option list press the <Right Arrow>.

Scroll the cursor to [Yes] by pressing the <Up/Down Arrow>.

To transmit Datalogger contents to external device via the serial port press <ENTER>.

To stop printout press the <Left Arrow>.

Circular Memory

In its default mode, the Datalogger collects data until its memory becomes full. At that time the flowme-

ter suspends data logging and cannot resume until the datalogger memory is cleared (see Clear

Datalogger command). Multi-Channel systems include Circular Memory and Single Channel systems

do not. Circular Memory allows the Datalogger to "'write over" its oldest records when memory reaches

full capacity. If you enable Circular Memory, you are assured of always collecting the most recent data.

But, also remember that you will lose the oldest Datalogger reports. Note further that invoking Circular

Memory deletes the current contents of the Datalogger.

NOTE: To avoid potential data loss, the flowmeter prevents you from altering the Circular

Memory setting when a channel is active.