I am having an issue connecting to a Koyo DL330 PLC via serial. I have it setup with the correct station addresses and COM port parameters, and it appears to be reading my register R16 correctly. However, writing to the tag fails. Sniffing the serial packets, it appears that the driver is trying to pull data from 2 8-bit registers when I only want to pull from one and I believe this is why it fails.
I have tried all of the PLC type selections in the driver. What else should I try?