UDP Sockets - Unable to Receive Serial Traffic via Realport

Hello all,

I have a client that is delivering serial data to our server via connection to a Digi One SP device. We’re having issues receiving the data through the Digi, but when the serial device is connected directly to a serial port on a laptop, the data is received without issue.

We’re using the UDP Sockets profile on the Digi in conjunction with the RealPort software installed on our server. We’ve confirmed the basic serial communication settings are correct (9600,8,N,1). We’re using HyperTerminal to monitor for serial data on the target server. Interestingly, there was one case during testing where we pressed a key while connected via Hyperterminal, and the serial data did start to flow through correctly, however it eventually ceased (root cause unknown), and we’ve been unable to replicate that behavior - pressing a key no longer “initiates” the data stream from the device connected to the Digi, but when moving the serial feed back to the laptop, the data immediately begins to flow properly again.

I don’t have much information on technical specifics as it relates to the customer serial feed, aside from the fact that it is being delivered from a Windows-based server OS, and being transmitted out of a virtual printer port that is provided through a 3rd party vendor software - that is directed out of a physical serial COM port on the source server itself, which is connected to the Digi One SP. The data itself is effectively “one way”, in that we receive serial data, but do not transmit any data back to the source server.

Anyone have any thoughts on this? Thank you in advance!

If you use RealPort software on your server, you must set up a RealPort profile on your Digi One SP, not UDP Sockets profile. You can configure RealPort to work in UDP mode, but you still need to use the RealPort profile on Digi.
UDP multicast is used to send serial data over an Ethernet cable to one or many hosts at the same time with the help of a UDP Socket profile.
Both the transmitting and receiving devices must be configured properly for UDP multicast to work.

Thanks! We reconfigured the Realport software with the Realport profile and were able to get the issue resolved – appreciate the assistance here!