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CHAPTER 4: INTERFACES
Note
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
Cycling power to the relay is recommended after a firmware upgrade.
After successfully updating the 469 firmware, the relay will not be in service and will
require settings programming. To communicate with the relay, the following settings will
have to me manually programmed.
MODBUS COMMUNICATION ADDRESS
BAUD RATE
(if applicable)
PARITY
When communications is established, the saved settings must be reloaded back into the
relay. See Loading Settings from a File on page 4–33 for details.
Modbus addresses assigned to firmware modules, features, settings, and corresponding
data items (i.e. default values, min/max values, data type, and item size) may change
slightly from version to version of firmware. Refer to GEK-106491C: 469 Communications
Guide.
The addresses are rearranged when new features are added or existing features are
enhanced or modified. The
downgrading the firmware is a resettable, self-test message intended to inform users that
the Modbus addresses have changed with the upgraded firmware. This message does not
signal any problems when appearing after firmware upgrades.
message displayed after upgrading/
EEPROM DATA ERROR
4–37
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