I'm looking for a "Mach3-Pro" with ModBus experience to connect the following setup:

- Serial Port COM1 (9 pins ) connected with DSub25-adapter to relay-card
- Relay-card pins 2-9 need to be addressed via Button in Mach3 (on/off via Mach3 brain)

It would be possible to work directly on the connected PC via Remote-access.
Your help will be of course be paid.

Looking forward to hear from any of you Pros out there