Campbell Scientific CR800 and CR850 Measurement and Control Systems - Manual (Page 377)

Section 8. Operation
377
FileControl Response
All output formats contain the following parameters. Any action (for example, 9)
that performs a reset, the response is returned before the effects of the command
are complete.
Table 99. FileControl API Command Response
outcome A response of zero indicates success. Non-zero indicates failure.
holdoff
Specifies the number of seconds that the web client should wait
before attempting more communication with the station. A value
of zero will indicate that communication can resume
immediately. This parameter is needed because many of the
commands will cause the CR800 to perform a reset. In the case
of sending an operating system, it can take tens of seconds for
the datalogger to copy the image from memory into flash and to
perform the checking required for loading a new operating
system. While this reset is under way, the CR800 will be
unresponsive.
description Detail concerning the outcome code.
Example:
192.168.24.106/?command=FileControl&action=4&file=cpu:davetest.c
r1
Response: delete the file davetest.cr1 from the host CR800
CPU: drive.
When html is entered in the FileControl format parameter, the response will be
HTML. Following is an example response.
8.6.3.7.3 ListFiles Command
ListFiles allows a web client to obtain a listing of directories and files in the host
CR800. ListFiles takes the form:
http://ip_address/drive/?command=ListFiles
ListFiles requires a minimum .csipasswd access level of 3 (read only).
Table 100. ListFiles API Command Parameters
format
Specifies the format of the response. The values html, json, and
xml are valid. If this parameter is omitted, or if the value is
html, empty, or invalid, the response is HTML.
uri
If this parameter is excluded, or if it is set to "datalogger"
(uri=dl) or an empty string (uri=), the file system will be sent
from the host CR800.
1
1
Optionally specifies the URI to a LoggerNet datalogger station from which the file list will be
retrieved.