Siemens SINUMERIK 840D sl Function Manual page 123

B3: Several operator panels connected to several NCUs, distributed systems - only 840D sl
Interaction takes place according to the following rules:
Active operating mode
● The user requests active operating mode by pressing a key on the operator panel front.
Passive operating mode
● Passive mode takes effect when the other PCU/HT6 has requested active mode.
The active operating mode can be selected by 2 different methods:
● Input key
● Channel switchover key and channel selection.
Extended Functions
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
2.2 Several operator panel fronts and NCUs with control unit management option
Active mode has the following characteristics:
– All operations and operating areas are activated.
– The operator can operate and monitor.
– The MCP assigned to the control unit is activated.
– If data transfer processes (e.g. series machine commissioning, various tool
management services, commissioning of drive configuration) are running between the
other control unit and the shared NCU, the PCU/HT6 cannot become active
immediately.
Active mode has the following characteristics:
– The connection to the NCU is maintained.
– All operations are deactivated.
– The operator cannot operate: A window is displayed with a header and an alarm line
and a message indicating the "passive" state.
– The global menu is activated.
– Any services initiated previously (in active mode) remain active (e.g. operation via RS-
232, reloading of part programs, executing the job list, alarms).
– The MCP assigned to the control unit is deactivated.
– The application window and softkeys are deactivated.
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