Sorry if I'm not understanding the documentation correctly but I'm having an issue addressing ZR registers. I have a Mitsubishi Q ethernet module connected to Ignition using the native Mitsubishi TCP driver. When creating tags in Ignition I'm unable to address the ZR register. In the Ignition documentation it seems to state that this register is inaccessible for a Q series device. Is this correct? Or am I misunderstanding?
Yes, what the documentation is implying and driver implementation is enforcing.
I'm trying to find some more information about why that is. There's something in the MELSEC spec:
The file register specified to "Use File Register of Each Program" in "CPU Parameter" or "PLC parameter" of the CPU module
cannot be accessed from external devices.
But I'm not quite sure what this means or if this is why we didn't allow that address.
I looked more into this and confirmed the ZR register can indeed be accessed. Currently the driver disallows the ZR keyword when parsing addresses for Q and L series devices due to oversight. I'll create an internal bug ticket for this.
Sorry for the delayed response. If this was fixed, I'm guessing we wouldn't know until the next version update. At that point it'd be mentioned in the release notes, correct? This fix would help our team a ton, so it'd be nice to know if/when it gets resolved.
Yes it will be in the release notes. You can also open a ticket with support and ask to be notified when this is fixed. Internally it's referred to as IGN-10455, support will need that information.