DAVIS 6316, User Manual

Communications Problems

15

Troubleshooting Guide

The following section answers some of the most commonly asked questions 
about WeatherLink

®

 and the Weather Envoy. Please consult this guide and the 

WeatherLink software Help before contacting Davis. Please see Contacting 
Davis Technical Support on page 20 for more information. 

Communications Problems

If you are having trouble establishing communication between Weather-
Link and the Weather Envoy, start by checking the Enovy’s own diagnos-
tics. Follow these steps:

Note: 

The data logger uses non-volatile memory, so you won’t lose any data you’ve already 
recorded.

1. Remove power, both AC and batteries. 

Remove any extension cables 

that are in the system. 

2. Unplug the data logger.
3. Wait at least two minutes, then plug the data logger back in. Make sure it is 

plugged in firmly and completely. 

4. On power up, you should hear two beeps, each of which occurs when the 

Envoy passes one of its diagnostic tests. Each beep follows the previous after 
about a second. The first beep tells you the processor is running. The second 
beep verifies the installation of the data logger. If you do not hear two beeps, 
contact Davis Instruments Technical Support. 

5. If you hear both beeps, see Troubleshooting Serial Port Communication on 

page 15 for instructions on checking your standard serial ports.  See “Trou-
bleshooting USB Communication” on page 17 if you are troubleshooting a 
USB connection. See “Troubleshooting WeatherLinkIP Communication” on 
page 18 if you are troubleshooting an TCP/IP connection.

Note: 

Generally, if the loopback test identifies a serial port, your PC is not the problem.

Troubleshooting Serial Port Communication

• Test the serial port using the loopback connector (the 

short cable with a phone jack on one end and a red 
plastic tip on the other) supplied with a serial port data 
logger. Use the 

Loopback

 button (as opposed to the 

Test

 button) in the 

Communications Port

 dialog box 

to test and find the correct serial port connection. If a 
loopback connector is not found, there is a problem 
with the port or the computer. 

• Check the serial port adapter if using a serial port connection. Use only the 

blue serial port adapter supplied with WeatherLink. Older models, or mod-
els not supplied in the WeatherLink connection kit, are not compatible.

Loopback

Connector