Campbell Scientific CR6 CR6 Measurement and Control System - Page 387
Data Preservation, 3.3.4 External Memory Power-up
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Section 8. Operation 8.3.3.3 Data Preservation Associated with file attributes is the option to preserve data in CR6 memory when a program is sent. This option applies to data table SRAM, microSDTM, and support software cache data (p. 493). Depending on the application, retention of data files when a program is downloaded may be desirable. When sending a program to the CR6 with the support software Send command, data are always deleted before the program runs. When the program is sent using support software File Control Send (p. 496) command or CRBasic Editor Compile, Save and Send (p. 492) command, options to preserve (not erase) or not preserve (erase) data are presented. The logic in the table Data-Preserve Options (p. 387) summarizes the disposition of CR6 data depending on the data preservation option selected. Table 92. Data-Preserve Options if "Preserve data if no table changed" keep micro SD data from overwritten program if current program = overwritten program keep CPU data keep cache data else erase CPU data erase cache data end if end if if "erase micro SD data" erase micro SD data from overwritten program erase CPU data erase cache data end if 8.3.3.4 External Memory Power-up Uploading a CR6 OS (p. 502) file or user-program file in the field can be challenging, particularly during weather extremes. Heat, cold, snow, rain, altitude, blowing sand, and distance to hike influence how easily programming with a laptop or palm PC may be. An alternative is to carry the file to the field on a light-weight, external-memory device such as a USB: (p. 603) or CRD: (p. 603) drive. Steps to copy files from the external memory drive to the datalogger are: 1. Place a text file named powerup.ini, with appropriate commands entered in the file, on the external memory device along with the OS or program file to be copied to the CR6 datalogger. 2. Connect the external device to the CR6 and then cycle power to the datalogger. This simple process results in the specified file automatically uploading to the CR6 with optional run attributes, such as Run Now, Run on Power Up, or Run Always set for individual files. Simply copying a file to a specified drive with no run attributes, or to format a memory drive, is also possible. Command options for powerup.ini options also allow final-data memory management on CF cards comparable to the datalogger support software (p. 89) File Control feature. 387