Avery Weigh-Tronix PC-905, User Instructions

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26 PC-905 Counting Scale User Instructions
Serial Communications
PC Protocol
The scale's RS-232 bidirectional communication works in a master/slave
protocol. A computer or master sends a command code to the scale (slave)
which will return a response to the master device or perform a scale
function. Commands to the scale are in uppercase, terminated with a
carriage return. Scale responses begin with the lowercase equivalent of the
command code.
Legend:
1) "_" represents the ASCII space character
2) "u” represents the units of measure character(s):
"LB" for pounds
"KG" for kilograms
"G" for grams
3) <CR> represents the ASCII carriage return
4) HML represents three bytes of scale status information as
described under Status Bytes below.
5) Value entered is assumed to be in same units of measure as
what the scale is currently in.
6) Display messages are limited to seven characters.
COMMAND RESPONSE DESCRIPTION
CA<CR> none Clear Sample
CC<CR> cc_xxxxx<CR> Request piece count
CP<CR> cp_x.xxxxxxuu<CR> Request piece weight value
CM<CR> none Switch to count mode
DIxxxxxxx<CR> none Display Message xxxx
(message is 7 characters max)
IC<CR> none Reset Scale (warm start)
PWx.xxxxx_uu<CR> none Loads x.xxxxx as piece weight
TR<CR> tr_ _ _ _x.xxxuu<CR> Request tare value
TZ<CR> none Clear the current tare
Txxxx.x_uu<CR> none Loads xxxx.x as tare
WD<CR> wd_ _ _xx.xxx<CR> Request net weight
WE<CR> we_ _ _xx.xxxuu<CR> Request net weight with units
W<CR> w_ _ _ _x.xxxuuHML<CR> Request net weight with units
and status
WG<CR> wg_ _ _xx.xxxuu<CR> Request gross weight with
units
WM<CR> none Switch to weight mode
WS<CR> ws_HML<CR> Request scale status
WZ<CR> none Zero the scale