Vigilantplant WFC009 User Manual page 19

HIS
Control network (Ethernet)
Layer 2 switch
Cable for redundancy
Layer 2 switch Layer 2 switch
(IEEE 1588) (IEEE 1588)
Layer 2 switch Layer 2 switch
(IEEE 1588) (IEEE 1588)
Field wireless
subnet A
Field Wireless
Access Point
(YFGW510)
Field wireless
network
(ISA100.11a)
Field wireless device
Figure A2-3 YFGW410/YFGW510-redundant configuration
Figure A2-3 shows the YFGW410/YFGW510-redundant system configuration.
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 field wireless manage-
ment station (IM 01W02D01-01EN).
As shown above, field wireless networks can come with various system configurations.
HIS/ENG PRM
FCS
ALE111 x 2
Layer 2 switch
Field Wireless
Management
Station
(YFGW410)
Layer 2 switch
(IEEE 1588)
Field wireless
subnet B
Field Wireless
Field Wireless
Access Point
(YFGW510)
Field wireless
(ISA100.11a)
<A2. System Configuration>
Field wireless management PC
Field Wireless Management Console
Information network (Ethernet)
Layer 3 switch
Layer 2 switch
(IEEE 1588)
Access Point
(YFGW510)
network
Field wireless device
A2-2
NTP server
Field network
Field wireless
backbone network
Field Wireless
Access Point
(YFGW510)
Field wireless
network
FA0203.ai
IM 01W02E01-01EN