Design and Function
4 --- 27
Symbol FunctionDescriptionItem
10 Events and infor-
mation key
Displays the event memory.
Selection from every menu.
Returns together with ’esc’ key (8).
11 Acknowledge (re-
set) key
Acknowledges (re---sets) messages and resets the
event memory (if permitted).
Tab. 33 SIGMA CONTROL keys
Fig. 8 SIGMA CONTROL indicators
Symbol
Item Description Function
12 Display Alphanumeric display with 4 lines.
13 Alarm Blinks red when an alarm occurs.
Lights continuously when acknowledged.
14 Communication Lights red if communication via the Profibus is inter-
rupted.
15 Service/warning
LED
Blinks yellow for:
--- maintenance work required
--- warning message
16 Controller power
ON
Lights green when the power supply to the controller
is switched on.
17 LOAD Lights green when the machine is in the operating
state LOAD
18 Operating mode
IDLE
Lights green when the machine is in the IDLE mode.
Blinks green if the manualLOAD/IDLING changeover
key (5) is used.
19 Machine ON The machine is switched on.
Tab. 34 SIGMA CONTROL indicators
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