Configuration Signature

Associated with: DNP3 slave outstations

This attribute comprises the signature that is associated with the configuration that is currently operating in the slave outstation. The attribute enables the configuration signatures to be compared between Master and Slave, to verify that the configuration in the slave outstation matches the current Configuration Signature in Geo SCADA Expert (the application used to configure the slave).

With a Geo SCADA Expert DNP3 slave outstation, the signature is calculated using a CRC32 algorithm. The signature is computed from the slave outstation and all of its Value Maps' configuration. In the slave outstation's Status display, the signature's octet string is formatted as a hexadecimal string and is prefixed with '0x' to indicate hex.

After configuring the slave, you might make a note of its Configuration Signature and pass the information on to the users of the DNP3 master. They could then compare that information with the current Configuration Signature that the DNP3 master has read from the outstation's Configuration Signature Device Attribute and stored in its database. Matching signatures would confirm that the slave's configuration has not been changed by other means, since the last known configuration change.