Comm, Network, Alarms, Custom Logic, Access ID’s, Date & Time, Trace, Alibi Labels, Hazard Labels,
Prompts, BOL, SD Card, Host, Factory Defaults.
Access Security levels
Much like that of a user having an assigned security level with a potential rights limitation on what
parameters they can change, there are other sources outside of a user that has ability to modify
parameters. These sources are communications such as Network/Ethernet, serial communications,
custom logic, and in further detail, Modbus communications. These Access points now have security
levels assigned to each that, once again, like a user, when applying a change, would be judged against
the parameters security level to be equal to or greater than it.
These can be found in the menu under Security Setup. The Communications covered are:
Com0, Com1, Com2, Network, Custom Logic, Modbus RTU, Modbus TCP
Security level modification
Regarding users: only and ADMIN can create a user and therefore only an ADMIN can set the security
level of the user. In relation to that: only an ADMIN (User or Access entity) can modify a Parameters or
Groups Security level. Consider the case where an ADMIN level user is loading an MLC configuration
file: All parameters INCLUDING parameter security level changes will be allowed. In the case where
the network access security level is ADMIN (by default): All parameters INCLUDING parameter security
level changes will be allowed. If in either case the Security level is less than ADMIN, no security level
will be altered and there is a potential to have some parameters that have an ADMIN level to be
rejected as well.
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