Instruction manual

CFM100 CompactFlash Module

1-4

The CardOut instruction has the following parameters:

StopRing: A constant is entered for the StopRing parameter to specify whether

the DataTable created should be a Ring Mode table (0) or a Fill and Stop table (1).

Size: The Size parameter is the minimum number of records that will be included

in the DataTable. If –1000 is entered, the size of the file on the card will be the

same as the size of the internal table on the datalogger. If any other negative

number is entered, the memory that remains after creating any fixed-size tables on

the card will be allocated to this table. If multiple DataTables are set to a negative

number, the remaining memory will be divided among them. The datalogger

attempts to size the tables so that all of them will be full at the same time

In the following example, the minimum batt_voltage and a sample of PTemp is

written to the card each time the data table is called. The StopRing parameter is 0

for Ring mode. This means that once the data table is full, new data will begin

overwriting old data. The size parameter is –1, so all available space on the card

will be allocated to the table.

DataTable (Table1,1,-1)

CardOut (0 ,-1)

Minimum (1,batt_volt,FP2,0,False)

Sample (1,PTemp,IEEE4)

EndTable

To prevent losing data, collect data from the CF card before

sending the datalogger a new or modified program. When a

program is sent to the datalogger using the Send button in the

Connect screen of LoggerNet or PC400, an attribute is sent

along with the program that commands the datalogger to

erase all data on the CF card from the currently running

program.

1.5.3 Data Retrieval

Data stored on cards can be retrieved through a communication link to the

datalogger or by removing the card and carrying it to a computer with a CF

adapter. With large files, transferring the CF card to a computer may be faster

than collecting the data over a communication link. Data retrieval is discussed in

detail in Section 4.

Removing a card while it is active can cause garbled data and

can actually damage the card. Always press the control

button and wait for a green light before removing card.

LoggerNet’s File Control should not be used to retrieve data

from a CompactFlash card. Using File Control to retrieve the

data can result in a corrupted data file.

CAUTION