Hi folks,
we have a lot of CR1000 loggers in a network, all are communicating via GPRS (SC105 adapter and Wavecom Fasttrack Modem, different mobile providers, different countries). Each logger is connecting the Loggernet server on a different IP Port.
For most stations, this works fine, many errors are clearly due to weak mobile grid coverage.
But now I am experiencing that two new stations keep being offline unless you restart them manually by disrupting power supply for some seconds.
The error message I get when trying to connect the logger is
"Forced to keep off-line", "Opening not permitted"
The funny thing is that the modems seem to have correct GPRS connections. Is this a configuration error on server side?
Does anybody know how to resolve this?
Thanks a lot, regards
Birk
The error message you report is most likely because you have ticked the "TCP Listen Only" checkbox in the setup screen for the IP Port in Loggernet. This settings prevents you accidentally trying to call out where this is not possible, e.g. a GPRS modem with a dynamic, private IP address.
For those types of connections make sure you have "Call-back enable" set and that there is a hole in your PC/router firewall to let the connection through. You also need to make sure the logger is set to automatically call back to the server.
If all is OK make sure that the network you are using them on does not have some rule about kicking off connections with low activity.
Thanks for the quick reply.
The configurations are the same as for a lot of working stations, that is why I wonder why exactly these are making trouble.
Also, the logger is configured to reset the modem first whenever the program running on it starts the "call home" routine.
The whole thing worked fine for two days at one station, 7 days at the other, since then they have to be manually reset...This is driving me crazy already.
Next thing I will try is running a network sniffer to see if there are incoming requests on the ports that are forwarded to the loggernet server.