User Manual

<A2. System Conguration>
A2-2
IM 01W02E01-01EN
FA0203.ai
Field network
Information network (Ethernet)
NTP server
Field wireless management PC
Field Wireless Management Console
PRMHIS/ENGHIS
Field Wireless
Management
Station
(YFGW410)
Layer 2 switchLayer 2 switch
Control network (Ethernet)
Cable for redundancy
Layer 2 switch
(IEEE 1588)
Layer 2 switch
(IEEE 1588)
Layer 2 switch
(IEEE 1588)
Layer 2 switch
(IEEE 1588)
Layer 2 switch
(IEEE 1588)
Layer 2 switch
(IEEE 1588)
Field wireless
subnet B
Field wireless
subnet A
Field wireless
backbone network
Field wireless
network
Field Wireless
Access Point
(YFGW510)
Field wireless device
Field wireless
network
(ISA100.11a)
Field Wireless
Access Point
(YFGW510)
Field Wireless
Access Point
(YFGW510)
Field Wireless
Access Point
(YFGW510)
Field wireless
network
(ISA100.11a)
Field wireless device
Layer 3 switch
FCS
ALE111 x 2
Figure A2-3 YFGW410/YFGW510-redundant conguration
Figure A2-3 shows the YFGW410/YFGW510-redundant system conguration.
The switching hub between YFGW410 and YFGW510 must support the rapid spanning tree
protocol (RSTF) to prevent Ethernet packets from looping, and the IEEE1588 (precision time
protocol).
For recommended switching hubs, see the User’s Manual of YFGW410 eld wireless manage-
ment station (IM 01W02D01-01EN).
As shown above, eld wireless networks can come with various system congurations.