Modbus, getting bits in a register

[espen.sorensen@jmhansen.no]

Hi,
How can I read out single bits from a 16-bit register? And write the bit to a group address? The modbus addresses in the readcoils function are not the same as for the readinputs addresses.
I also want a tip how I can read signed 16-bit register? (out side air temperature)

Espen