Siemens SINUMERIK 840D sl Function Manual page 215

Figure 2-36
Figure 2-37 MMC_1 online to NCU_1, MMC_1 wants to switch over to NCU_2, online-request interface in PLC_2 occupied
by another MMC
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Several Operator Panels on Several NCUs, Distributed Systems (B3)
MMC_1 is linked online to NCU_1 and wants to switch over to NCU_2, switchover
disable is set in PLC_1
Examples
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