ABB GW100 User Manual page 58

G EN ER A L TRO UB LESH OOT IN G
Problem
Status: "Network Manager
Queue Full"
Modbus Exception
Device connects and discon-
nects
Unable to connect new de-
vice
I/O Schedule Upload Failed When downloading the devices configuration to a gateway where some
Low battery lifetime
Radio signal is weak
Weak mesh network
Port is closed or device is
unresponsive.
5 4
Solution
In exceptional cases where a reboot does not fix the problem then the de-
vice must be reset. Either Set Factory Defaults (soft reset function) or
Hard Reset options can be utilized.
Slow down the scan rate of the host system (the network queue can store
100 messages and can be overloaded if scanning occurs too quickly).
Verify Modbus register addresses.
Verify WirelessHART field device, adapter or wired HART device supports
the command.
Trying to read data from unmapped register will result in exception.
Trying to read data from a device during handshaking state will result in
exception.
If the device does not have good radio signal, then it can have unstable
connection. This can be seen by looking into RSSI, latency, stability and
number of joins in network statistics page. If the number of joins keep go-
ing up, then add repeater nodes (if possible) to improve network reliability,
stability and availability.
RSSI of the device's active link should be better than -75dBm.
If it is not possible to add a new device, make sure that there is remaining
capacity left in the gateway to add new device. To check, login to the net-
work statistics page. Up to 24 devices can connect to AWIN GW100 rev.2.
The gateway itself is counted as one device, bringing total to 25 devices.
Connected devices number can be reduced to 8 if all devices burst 3 mes-
sages simultaneously at 1sec update period.
devices are offline will result in this error. This error is followed with a sum-
mary of device(s) which failed. For all other devices, configuration upload
is successful.
Try to bring the offline device online and import again.
If a device shows low battery lifetime then replace its battery by following
the service manual of that device.
Make sure there is clearance around the antenna. Look into the guidelines
for installation of antenna in the antenna used in the setup.
Login to the network statistics page and verify that each device can com-
municate to at least 3 neighbors (recommended). If so, the device row will
be color coded green.
If not, make sure that all connected devices are operating as mesh nodes
(i.e., routing enabled). You can verify this by logging into the monitor ac-
count and looking at Devices Information page. To enable/disable routing
status the user can use Devices Configuration import file.
Check that the limits are not reached:
– Maximum 4 Modbus clients can connect simultaneously.
If the limit is not reached, then wait for up to 5 minutes for the service to
restart, port to open.
If the gateway remains in closed state and does not recover itself within
few minutes, then simply reset the device by power cycling.
If the device still retains the error state, then try soft or hard reset.
TR OUB LE SHO OTI NG
3B NP 10299 2 B