Security Codes - Campbell CR300 Series Product Manual

16.2.2 Security codes

The data logger employs a security scheme that includes three levels of security. Security codes
can effectively lock out innocent tinkering and discourage wannabe hackers on all
communication links. However, any serious hacker with physical access to the data logger or to
the communications hardware can, with only minimal trouble, overcome the five-digit security
codes. Security codes are held in the data logger Settings Editor.
The preferred methods of enabling security include the following:
Device Configuration Utility: Security codes are set on the Deployment> Datalogger tab.
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Network Planner: Security codes can be set as data loggers are added to the network.
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Alternatively, in CRBasic the
program compile time. This is not recommended because deleting
CRBasic program is not equivalent to SetSecurity(0,0,0). Settings persist when a new
program is downloaded that has no
Up to three levels of security can be set. Valid security codes are 1 through 65535 ( 0 confers no
security). Security 1 must be set before Security 2. Security 2 must be set before Security 3. If any
one of the codes is set to 0, any security code level greater than it will be set to 0. For example, if
Security 2 is 0 then Security 3 is automatically set to 0. Security codes are unlocked in reverse
order: Security 3 before Security 2, Security 2 before Security 1.
Table 16-1: Functions affected by security codes
Function
data logger program
Settings editor
and Status table
Setting clock
Public table
Collecting data
See Security(1), Security(2), Security(3)
For additional information on data logger security, see:
4 Ways to Make your Data More Secure
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Available Security Measures for Internet-Connected Dataloggers
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SetSecurity()
SetSecurity()
Security code 1 set
Cannot change or retrieve
Writable variables cannot be changed
unrestricted
unrestricted
unrestricted
(p. 167) for the related fields in the Settings Editor.
instruction can be used. It is only executed at
SetSecurity()
instruction.
Security code 2 set
Cannot change or set
Writable variables
cannot be changed
unrestricted
from a
Security code 3 set
All communications
prohibited
16. CR300 series maintenance 106