E-T-A EM12D-TMB Series, Instruction Manual

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5.4 Operating mode: (independent operation)
If no connection to the superordinate control unit is recognised after the supply voltage was applied, the
module will change into the operating mode “independent operation”. The circuit protectors will adopt
the condition specified by the configuration. If there is a connection between the Modbus controller and
the superordinate control unit and there is no critical failure, the operating mode “independent operation”
will be quitted. Should the connection between the Modbus controller and the superordinate control unit
be interrupted during operation, the Modbus controller will automatically change into the operating mode
“independent operation”.
Should the connection between the Modbus controller and the superordinate control unit be interrupted and
the non-cyclical parameter “UNFREEZE” be set, all circuit protectors will be switched off before changing into
the operating mode “independent operation”.
Should the connection between the Modbus controller and the superordinate control unit be interrupted and
the non-cyclical parameter “FREEZE” be set, the condition of the circuit protectors will remain unchanged
before changing into the operating mode “independent operation”.
By means of the non-cyclical parameter, the behaviour of the Modbus controller can be defined in the event
of an interruption of the communication to the superordinate control unit.
Either the condition of the circuit protector is frozen (FREEZE) or all circuit protectors are switched off
(UNFREEZE).
Should the connection between the Modbus controller and the superordinate control unit be restored after a
previous interruption, the operating mode “independent operation” will be quitted.
5.5 Operating mode: (Faultless operation)
If there is neither a critical nor a non-critical failure and if there is a connection to the superordinate control
unit, the Modbus controller will change into the operating mode “faultless operation”. The parameters will be
transmitted from the superordinate control unit to the Modbus controller and will be saved there. Subsequent-
ly they will be forwarded to the electronic circuit protectors. The slot configuration data and slot parameters
will be exchanged over Modbus Register between the superordinate control unit and the Modbus controller.
5.6 Operating mode: (bootloader)
ControlPlex
®
Views tool allows putting the Modbus Controller into the bootloader mode and to load a new
firmware. The actual procedure is described in a separate document.
5.7 Signalling of the various operating modes
The different operating modes of the Modbus controller are indicated as follows:
Operating mode Indication of operating mode Modbus communication
LED CE/CM
system start of supply module not defined
independent operation
green blinking not available
faultless operation
green available
critical failure detected red not available
uncritical failure detected yellow available
uncritical failure detected
yellow blinking not available
Bootloader active
red blinking not available
fig. 7: Available operating modes