Siemens SIMATIC HMI Mobile Panel 277 RO - Page 61

Operator controls and displays
5.1 Operator controls and displays on the Mobile Panel 277 RO
Mobile Panel 277 RO
Operating Instructions, 10/2015, A5E36824256-AA
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Circuit diagram
The figure below shows the operating positions and interconnections of the enabling button.
Switch settings
The primary function of the evaluating logic is to recognize the three switch settings:
Switch setting
Functions
Enabling button
Switch state
1
Neutral position
Not activated
OFF (open)
2 Enable Activated ON (closed)
3
Panic
Pressed
OFF (open)
The following figure shows the switching sequence during normal usage.