Operating instructions

WirelessHART Fieldgate SWG70 14 Trouble-Shooting
Endress+Hauser 85
14.2.3 Wireless Communication Faults
Problem Cause/Remedy
1 Fieldgate SWG70 cannot find a WirelessHART device
in the network
• The device has not yet joined the network
– The joining process may take a while
– Check the join status in the gateway's Instrument List
– Alternatively, check the wireless communication
parameters (join status) of the device via a HART
modem connected to the device
• The device carries the wrong network ID and/or the
wrong join key
– Check the wireless communication parameters of the
device via a HART modem connected to the device.
The device and the gateway must have the same
network ID and join key.
2 The wireless connection to a WirelessHART device is
poor and disappears from time to time
• There are not enough neighboring WirelessHART devices
within the device's antenna range
– Check the number of neighbors
Diagnosis > Wireless Communication
– There should beat least 2 neighbors
• Signal too weak
– Check the signal level of next neighbour in the device
diagnosis - this must be larger than -80 dBm if the
network is to work properly
– Improve signal strength by repositioning the antenna
or adding adapters as repeaters
• Walls or other static/moving objects block the radio
signals, or the antenna is not aligned vertically
– Reposition the gateway or use an external antenna.
3 The Network ID and the Join Key cannot be
downloaded to Fieldgate SWG70
• The security DIP Switch 8 is OFF
– Set DIP Switch 8 to ON (if Gateway installed in Ex-
Zone 2, switch off power before doing this)
– If you want to continue using security mode, set the
DIP Switch 8 to OFF, after the Network ID and Join
Key have been downloaded
4 A device appears with a yellow icon in the instrument
list
• Either the device or the communication is faulty
5 A device appears with a red icon in the instrument list • The device is faulty
• The network was switched off for sometime, but the
device has continued transmitting.
– The device has gone into prolonged sleep mode
– Either wait until the device reappears (waiting time
depends on how long the network was not present) or
press the adapter’s push button for 5 seconds to force
joining
6 A device is present in the network, but bursting is
interrupted
• The field device is being configured locally by a modem
– When a modem is communicating with the adapter, it
is impossible to measure the loop current and bursting
is disabled
– Bursting will restart when the modem is disconnected