Siemens SINUMERIK 840D sl Function Manual page 94

B3: Several operator panels connected to several NCUs, distributed systems - only 840D sl
2.1 Brief description
Features
When operating two control units in the configuration illustrated above, the user will observe
the following system operating characteristics:
● For the NCU, there is no difference between inputs from the various control units.
● The control units are mutually independent in terms of data display, i.e. the display
● Spontaneous events, such as alarms, are displayed on both control units.
● The protection level set on one control unit will also apply to the second.
● The system does not provide for any further coordination between the control units.
If the user applies the standard configuration shown in the diagram, then no further special
settings are required.
1 operator panel: 3 NCUs
One operator panel can be connected to up to three NCUs (see diagram below). In this
case, the MCP has a fixed assignment to the relevant NCU.
Figure 2-5
It is possible to operate several NCUs from one operator panel (several autonomous
machines or one large machine with several NCUs). At any given time, only one preselected
NCU is connected to the operator panel for operations.
● HMI Embedded also has only one connection for alarms.
● HMI Advanced: The PCU remains connected to all NCUs for alarms.
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selected on one panel is not affected by the display on the other.
Example configuration (M:N in the ratio 1:3)
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions