Rockwell Automation 1771-DB Basic Module User Manual - Series A - Manual (Page 148)

Data Types
Chapter 7
7–6
The BASIC Module interfaces with the PLC-2, PLC-3 and PLC-5 family
processors. You can send the following data types to the BASIC Module
types to the BASIC Module:
16-bit binary (4 Hex digits) (XXXX)
3-digit, signed, fixed decimal BCD (
" XXX.)
4-digit, unsigned, fixed decimal BCD (XXXX.)
4-digit, signed, octal (
" XXXX.)
6-digit, signed, fixed decimal BCD (
" XXXXXX.)
These data formats are the same as those described under ”Output Data
Types” except for 3.3-digit BCD. Refer to the above descriptions.
The BASIC Module converts the data looking at the sign bit when
applicable. Refer to the programming manual for your processor for the
proper data formats.
7.3
Input Data Types