You Bet.
As per JointTechs sketch the first modbus variable was defined as:
regs[MB_REG0]=<variable goes here>
To add extra points simply increase the reg number, eg.
regs[MB_REG1]=<next variable here>.
When creating the data source in Mango, the offset needs to be increased by one to correspond with each point.
I will post up a copy of my sketch once it is cleaned up, my programming skills are horrible. :mrgreen: