CraziFuzzy

Sorry for the very late response. When I was trying to get Visilogic to talk to it, I was using a 232 adapter, but I also used a 485 adapter (with an appropriately pinned adapter cable) and a modbus tool to exchange parameters.

Not as of yet. I've tried with two of them (that admittedly are configured identically).

This is the error I receive on any attempt to communicate with the device from visilogic, no matter what baud rate I set it to (the chosen baud rate is only used for an instant, than the PC and the v350 switch to 9600, and then it fails out. The USB-Serial adapter I'm using communicates fine to the v350 to poll MODBUS registers.

I'll give that a shot. I had it set to 19200, which is what the modbus communicates in, but I also noticed that when it switches to PCOM mode, it's displaying as 9600 baud on the SERIAL page of info mode. Mostly unrelated, but we also had one of them lose it's programming during a power outage yesterday. I'm assuming I'd be able to copy the program from one to the other via microsd, even if it's password protected, correct? Haven't read up on the process for doing that.

Checking back in. Finally got the opportunity to plug into the controller. Not much luck though. Any operations in visilogic to try to upload or even things like get hardware info, etc return an error. Watching from info mode, COM1 does switch to PCOM, 9600,n,8,1 whenever the laptop is trying to talk to it, but apparently is not responding in kind. The cable seems to be good, as I can see MODBUS traffic in realterm. Is this bland error the expected behavior if the PLC is locked down? Again, thanks for any assistance.

No sd card, and no ethernet port (has 2 serials, both configured for modbus - one talks to the burner controller, the other to the existing management system). Ultimately, I'm looking to discern what is available on the second modbus, and hopefully leverage that for the sequencing I want to perform.

I have some boilers managed by a few V350's, and am looking to do some integration with them. I am looking to view the ladder/hmi project, but do not have the original files. Is is possible using VisiLogic to download the project from the device to explore and potentially tweak it as necessary for our integration? Thank You