godcixelsyd
Member
Hello wise PLC sages! I'm on an attempted quest for knowledge, and think I'm getting close to a resolution or discovery that I've been wasting my time. So, the story so far... I have a ViewMarq LED display from Automation Direct. I would LIKE to control it over Ethernet without purchasing a COMMS gateway to go between my PLC and it. I have found documentation on Ethernet/IP Socket Interface and have gotten that working (as best I can tell).
I have a message to create the socket that I'm receiving a .dn bit when I flag it, and I'm getting an instance written to the output tag.
From here I use that instance for a message that opens the connection, creating it for the target IP address and port (my string here is "192.168.1.105?port=502" in my example), which gives me the proper .dn bit so I believe this is working as well?
Finally I do a SocketWrite with the ASCII string I need to use being COPied into the outgoing Buffer. Here I will usually get a .dn bit if it's a newly opened socket and hasn't timed out (a problem I'm fine with facing once the once I'm controlling the screen properly), but am not seeing any kind of change on the LED screen based on the command I'm sending it.
So... Any thoughts or questions that may get me the last few steps?
I have a message to create the socket that I'm receiving a .dn bit when I flag it, and I'm getting an instance written to the output tag.
From here I use that instance for a message that opens the connection, creating it for the target IP address and port (my string here is "192.168.1.105?port=502" in my example), which gives me the proper .dn bit so I believe this is working as well?
Finally I do a SocketWrite with the ASCII string I need to use being COPied into the outgoing Buffer. Here I will usually get a .dn bit if it's a newly opened socket and hasn't timed out (a problem I'm fine with facing once the once I'm controlling the screen properly), but am not seeing any kind of change on the LED screen based on the command I'm sending it.
So... Any thoughts or questions that may get me the last few steps?