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

Wayne,
Thanks indeed for answering
Have a look at the document attached, page 111, appendix C.
It looks like a very standard Modbus setting except the Data Bits numbers... :?
Have a good day
Attachments:
248083400-1 R2 (Op Man H2016 H3016 H5016 Gen E) Letter.pdf ‏5041 KB

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