Siemens SINAUT ST7 - Page 98

Network structures and topologies
2.2 Configurations
Station control system
98 System Manual, 07/2009, C79000-G8976-C178-07
Examples of redundant configurations
Redundant network configurations (examples)
Network Redundant star network via
type: 2 dedicated lines each, mixed
with non-redundantly
connected stations
Protocol: SINAUT ST7 and ST1
Mode: Polling
Network Redundant point-to-point
type: connection via two
dedicated lines
Protocol: SINAUT ST7 and ST1
Mode: Polling
Network Redundant line network via
type: 2 dedicated lines each, mixed
with non-redundantly
connected stations
Protocol: SINAUT ST7 and ST1
Mode: Polling
Master (control center)
Node station
Station
Network Redundant Point-to-Point
type: connection via dedicated line
and radio between control center
and node station;
subordinate stations connected
via a non-redundant star
network
Protocol: SINAUT ST7 and ST1
Mode: Polling or polling with time slot
procedure (wireless)
Network Redundant point-to-point
type: connection via dedicated line
and dial-up network
Protocol: SINAUT ST7 and ST1
Mode: Polling (dedicated line)
Spontaneous (dial-up network)
Notes
Figure 2-10 Redundant configurations
For further options for setting up redundant transmission paths, refer to section Installing the
TIM 4R-IE in an S7-300 (Page
109).