Yokogawa YFGW710 - Manual (Page 61)

A4-2
IM 01W01F01-01EN
A4.2 Wireless System Specification
n Specification of Wireless Transmission
Item Specification
Wireless Standard ISA100.11a (conforming to IEEE 802.15.4)
Frequency 2400 MHz-2483.5 MHz
Channel 15
Modulation method Direct sequence spread spectrum (DSSS)
Wireless Output Power 11.6 dBm (Max.), Fixed
Receiving sensitivity Less than -95 dBm
Communication Range *1 Radius of 500 m (Max.)
Raw data rate 250 Kbps
Security AES128 bit encode
*1: Values in the ideal condition. They change (shorten) depending on the conditions.
n Number of connected devices
Item Specification Descriptions
Maximum Connection
Number
4 clients ―
OPC Server
The total number of host-side
devices connected to the
YFGW710 must not exceed
10.
―
PRM
Field wireless configurator
Field wireless management tool
FieldMate
Note: Refer to the next item for the number of connected field wireless devices.
n Number of connected field wireless devices and Publication Period
(Update Time)
When the Update Time of all Field Wireless Device is the same, the maximum connection is
ten devices when Update Time is a second, and the maximum connection is fifty devices when
Update Time is five seconds.
A maximum of two Update Time can be set, and one of them must be longer than 10 seconds
(low speed mode).
Network
Form
Update Time: Group A Update Time: Group B
Update Time A Number of devices A Update Time B Number of devices B
(sec.) (units) (sec.) (units)
Star
1 Max. 5 10 or more Max. 45
2-4 Max. 10 10 or more Max. 40
5 or more Max. 50 10 or more
50 – number of de-
vices A
Mesh 10 or more Max. 50 10 or more
50 – number of de-
vices A