Yokogawa YFGW410 - Manual (Page 19)

<A3. YFGW410 in Redundant Configuration>
A3-1
IM 01W02D01-01EN
A3. YFGW410 in Redundant
Configuration
HIS HIS/ENG PRM
"Field wireless management PC
- Field Wireless Management Console" NTP server
Control network (Ethernet)
FCS
ALE111×2
L3SW
L2SW L2SW
Cable for Redundancy
Field Wireless
Management Station
(YFGW410)
Subnet A
Field Wireless
Access Point
(YFGW510)
Field Wireless
Access Point
(YFGW510)
Field wireless
network
(ISA100.11a)
Field wireless device FA0301.ai
Ethernet
Figure A3-1 Redundant system configuration of YFGW410
In this example, the both of YFGW410 and YFGW510 are made redundant system. In using the
Duocast, the field wireless devices are made fully redundant and a highly reliable system.
Two YFGW410 virtually operate as a single machine, and the backbone devices and host system
devices access to this virtual machine.
When one of YFGW410 is out of service by failure, another YFGW410 continue operation. One
failure does not affect a field wireless system.
Up to 100 field wireless devices can be connected to a single field wireless subnet even in the
redundant configuration. Up to 500 field wireless devices can be connected to YFGW410.
The host system is DCS, SCADA system, or the device management application.
IMPORTANT
When CENTUM VP is running, set and adjust the parameters of the field wireless device from
PRM. When CENTUM VP is not running, or when a non-Yokogawa host system is connected,
the parameters can be set and adjusted using FieldMate.