Output Datalogger; Circular Memory - Siemens SITRANS F Instruction Manual

Section 4
To view Datalogger contents press
To return to Datalogger Control press

4.4.2 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 Setup 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 flowmeter 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 exter-
nal device. In addition, you must configure the RS-232 Setup correctly. 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 RS-232 Setup).
To access the [Output Datalogger] option list press
To scroll the cursor to [Yes] press
To transmit Datalogger contents to external device via the serial port press
To stop printout press

4.4.3 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 Data-
logger 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.
To setup and enable Circular Memory:
The Datalogger Mode menu must have the [Memory] menu cell selected.
Datalogger items must be selected (e.g., Site ID, Date, Time, etc.).
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