We have a number of CR6 data loggers that are set up with COM111 modems posting data from marine data buoys to a http-based data store. The modems are powered through SW12-1 and are activated by software on power-up/compilation, and also power cycled once every 24 hours. The data comunication to the modems is through ports C1/C2. This works perfectly across three identical systems.
We're now in the process of setting up another system in exactly the same manner, but as soon as the SW12-1 port is powered on by the software the voltage from the port drops to zero, the modem is off, and the communications from the CR6 to the computer via either ethernet, USB or RS232 fails and the CR6 appears to reboot -- this cycles indefinitly.
If we swap the modem power connections to the SW12-2 port (which is normally used for an Iridium modem) or a 12V port the modem functions perfectly. Also, if we just monitor the voltage of the SW12-1 port using a multimeter with no load connected, it behaves as we'd expect, switching and power cycling as the software commands.
Our diagnosis of this issue is that as soon as there is a load (the modem) on the SW12-1 port, then something hardware related on the new CR6 is failing causing the "crash" -- can you offer any other insight before I open a warranty claim?
Hello maustin,
Sounds like you have done everything within your power to resolve this. I recommend you get an RMA and send this CR6 to the CS office servicing your area.