Internet PLC Forum

Hi, we are using the Nano-10 PLC to monitor 4 pulse meters, then we have a custom function that opens a TCP connection to a php script i've written on our website, this php script takes the counter values and logs them to a mysql. The link is working fine and we have the custom function running every 10 minutes, however it will not send data maybe once every 4/5 times. So we have gaps in our trends. Is there anything anyone can think of that might be causing this?