Campbell CompactFlash CFM100, Инструкция по эксплуатации

Страница: 9 / 33

Section 1. CFM100 CompactFlash
®
Module Overview
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.
CAUTION
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.
CAUTION
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
1-4