Modbus ASCII software protocol with 8 data bits

Hi All,

I must communicate (serial) with a Handheld 3016 device (a particle counter from LightHouse). It uses Modbus ASCII software protocol with 8 data bits.

Every Modbus ASCII software protocol, I have been looking through use 7 data bits.

Any kind of Modbus LabVIEW libraries (old one like nimodbus.llb or new one like ni_lib_modbus_library-1.1.5.38.vip) let the chose to “tag” RTU (8 data bits) or ASCII (7 data bits).

*** There is nowhere ASCII with 8 data bits ***

I always get a kind of “framing error”... obviously since I can't set the com ok...

Any advices??

Thanks a lot for any help

Vids65