Well.. .. if you already tried all possible LongDataType and the data is still showing up crazy.. . . i can only think of a possible address shift.. Eg... if you are polling tag address 40001, try setting that to 40000 or 40002. See what happens.
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Hi, I will just go straight into troubleshooting guidelines. You mentioned the application works on LAN, but once it is on WAN (trying to access from Internet), it does not. This indicates a port forward issue over at the router, this is what I believe. Or there may be firewalls/proxies somewhere that prevents the traffic between router and HMI, or even on the external device itself that can be blocking port traffic. Port traffic troubleshooting is done by a magical good old DOS days command call Telnet. Let’s get to basics… Make sure this is enabled in your Windows (Telnet Client). Then go into the command prompt, and do a Telnet into whatever port you want to check. In this example, I am going for data port 1234 (“telnet [ip addy] [port number]”). If the port is open all the way through proxies, firewalls and router, you will get the below response, a blank screen. And this is good. Just close the command prompt. If it does not, it shows up like the below. This means you will have to go check on all the proxies, firewalls and router along the way to see which one is blocking the traffic. And that’s it. Just take note, you are saying that the IT department had assigned you port 6789 at the WAN side of the router. So, in order to check if 6789 had been properly configured to route traffic to whatever port on the HMI in the LAN side, get on to the Internet or the WAN side. Telnet to IP of WAN and that port (example: “telnet 220.127.116.11 6789).
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