Yokogawa YFGW410 - Manual (Page 194)

G2-1
IM 01W02D01-01EN
G2. Field Wireless Network
G2.1 Field Wireless Network Specification
Item Specifications
Network Form (Topology) Star, Mesh
Number of route hops
Fixed (Max. 4 hops)
Auto (Max. 4 hops) *1
Maximum number of hopping patterns 8 patterns *2
Maximum number of connectable
field wireless devices / YFGW410
Star *7
200 devices (at 1 s update) *3
500 devices (at 5 s update) *3
Mesh *8 500 devices (at 10 s update) *3
Maximum number of field wireless subnets / YFGW410 20 subnets
Maximum number of YFGW510 devices/YFGW410 20 devices
Maximum number of YFGW510 devices / field wireless subnet
8 devices (In wireless LAN connec-
tion, 1 device)
Maximum number of routing devices / field wireless subnet 20 devices
Maximum number of connectable
field wireless devices / field wireless
subnet
Star *7
20 devices (at 1 s update) *4
100 devices (at 5 s update) *4
Mesh *8 100 devices (at 10 s update) *4 *5
Maximum number of directly connect-
able child devices / routing device *10
Routing device 4 devices
I/O device 15 devices
Alarm at occurrence of failure in wireless communications Supported (Displayed on FWMC)
Battery life of routing device
5 or more years for 5 child devices at
update in 30 s cycle *6
Direct communication between wireless devices Not supported
*1 Only an Auto I/O device is possible for an automatic setup of a route. An I/O device and a routing device need to fix a route.
*2 Configuring the channel black list decreases the number of available hopping patterns.
*3 Including a routing device
*4 Maximum number of connectable field wireless devices when using periodic communication (Publish) and Modbus read access.
The number of connectable field wireless devices decrease if the Modbus Write communication is used together.
*5 The number of connectable devices depends the number of hops. If many field wireless devices are connected to a place with
many hops, the number of simultaneously connectable devices decreases.
*6 It is battery-life prediction when YTA510 (DEVREV1) is used as routing device and sets up the updating cycle of 3,600 seconds.
*7 The field wireless device specified so that either or both of routes are connected to the YFGW510. A routing device is not used.
*8 The field wireless device specified so that either or both of routes are connected to a routing device. The field wireless device is
connected to YFGW510 via a routing device.
*9 Number of field wireless devices that can be connected as the next hop of a single routing device
If there is a firewall between YFGW410 and YFGW510 or YFGW410 and the host system, fol-
lowing services should be allowed on the firewall.
Service Port number Interface of YFGW410 Destination
NTP/SNTP [UDP] 123
• Field network
• Field wireless back-
bone
• NTP/SNTP server
IEEE1588 [UDP] 319, 320
• Field wireless back-
bone
• YFGW510
Modbus/TCP [TCP] 502 • Field network
• CENTUM VP
• STARDOM
• FAST/TOOLS
• Other companies’ im-
plementation of DCS/
SCADA
YOKOGAWA dedicated
communication service
[TCP] 4901, 4902 • Field network
• Field wireless OPC
server
• PRM
• FieldMate