X20 system modules • X20 interface module communication • X20IF2181-2
X20 system User's Manual 3.10
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4.23.25.9.5 X20BC8084 with hub expansion modules
Expanding the X20BC8084 with two active X20HB2885 hub modules eliminates the need to connect external hubs.
Two hot-swap capable modules are required so that I/Os can continue operation uninterrupted even when a hub
is replaced. Additionally, a redundant supply voltage for the system can be easily implemented using two X20
supply modules.
HB2885
HB2885
BC8084
Hub
Hub
PS PS ...
PL1
PL2
PL1
PL2
X20 modules
Figure 601: Function principle of the X20BC8084 bus controller with hub expansion modules
POWERLINK
Network 1
POWERLINK
Network 1
POWERLINK
Network 2
X20BC8084 with 2x X20HB2885
X20CP158x with 1x X20IF2181-2
POWERLINK
Network 2
Figure 602: X20BC8084 with hub expansion modules
Summary of Contents for X20 System
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