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Communication
NCI Serial
Communications
Protocol
The 67XX is capable of interfacing with an EIA Standard RS-232, full duplex,
asynchronous, smart device, or 4-bit parallel interface for output of weight data to
an ECR device. The 67XX 15 pin style is configured as a 4-Bit Parallel standard
from the factory. To configure the 67XX to the RS-232 interface operation, there
is a dip shunt jumper located at JMP 2 on the main PCB that needs to be positioned with
shortening pins placed away from the DE-15 connector or to the inside of the PCB. The
second uses a DE-9 connector and is only capable of communicating in the EIA Standard
RS-232 method.
This standard will be used by all products other than ECR scales.
Symbol Key: <ETX> End of Text character (03) hex
<LF>
Line Feed character (0A hex)
<CR>
Carriage Return character (0D hex)
<SP>
Space (20 hex)
x
Character from display including minus sign.
hh. . . Two or more status bytes
uu
Units of measure (lb, kg, oz, g, etc. using ANSI standard
abbreviations)
Command
W<CR>
S<CR>
Z<CR>
H<CR>
all else
Mandatory Commands
Scale Response
<LF>xxxx.xxuu<CR>
<LF>hh...<CR><ETX>
or
<LF>xxxxxx<CR>
<LF>hh...<CR><ETX>
<LF>hh...<CR><ETX>
<LF>hh...<CR><ETX>
<LF>xxxx.xxuu<CR>
<LR>hh...<CR><ETX>
or
<LF>xxxx.xxoz<CR>
<LF>hh...<CR><ETX>
or
<LF>xxxxxx<CR>
<LF>hh...<CR><ETX>
<LF>?<CR><ETX>
Results
Returns decimal weight with units
plus scale status.
Returns contents of display
(other than wt) & scale status
Returns to scale status
Scale is zeroed, returns status.
Returns decimal wt in 10x with
units plus scale status.
Returns lb-oz wt in 10X with units
plus scale status(if required by
application).
Returns contents of display
(other than wt) & scale status
Unrecognized command
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