Yokogawa YFGW410 - Manual (Page 139)

<D4. Starting up the Field Wireless System>
D4-2
IM 01W02D01-01EN
The method of starting operation for IO devices is the same as for devices with routing functions .
Using the Monitor, confirm that all field wireless devices have connected (Full Join) to the net-
work. Instructions on how to check this with the Monitor are described below.
After confirming that all field wireless devices have connected (Full Join) to the network, when 3
to 6 hours have elapsed, use the Monitor to check the radio communications path, communica-
tions quality and status of the field wireless devices. If there is any problem with communication
quality or paths, reconsider the positions of the field wireless devices and/or antennas and adjust
them.
For details of how to check communications quality with the Monitor and use device manage-
ment functions see Section D4.2 Wireless Network Management.
IMPORTANT
Within the same field wireless subnet, while a field wireless device is trying to join through an
existing the Field Wireless Access Point, a new Field Wireless Access Point is not available im-
mediately. Once the field wireless device has successfully joined, the new Field Wireless Access
Point will be available.
D4.2 Wireless Network Management
Check that the field wireless network is up and all communications are stable, then the system
will be a normal operation.
Since the quality of wireless communications is affected by the environment of the communica-
tions paths. Even after checking that communications are stable,
Various causes (installation of structures or machines, arrival of a large vehicle, temporary con-
struction installations, or new installation of wireless networks using the same frequency on a dif-
ferent wireless LAN) may lead to deterioration. To keep a stable field wireless network, requires
regular status monitoring and maintenance of the wireless network.
The Monitor in the Field Wireless Management Console built into YFGW410 is used for monitor-
ing status and management of the wireless network and devices.
D4.2.1 Monitor Functions
The Monitor provides functions to show the wireless network topology, backbone device status
(YFGW410 and YFGW510), and field wireless device status, functions for logging operations
and warning or fault messages, and functions for updating the firmware of the devices .
These functions are related as follows.