Product Manual

Data Output Format:

In order for the serial data sent from the PC-400 to be useful, the data must be

organized so that it is easy to read. To accomplish this, the PC-400 arranges

the displayed data with additional text to indicate the active units and to indicate

the presence of motion during the reading.

“FO” Format: The basic data format sent by the PC-400 is illustrated in Fig.

2 through Fig. 4. Each line of data begins with an STX character (02 hex,

start of text) followed by a polarity sign (space for positive and “-” for negative)

which indicates the reading polarity. Next, the displayed weight is sent. Six

digits are used with a decimal point inserted in the correct position. After the

weight data is sent, a space followed by the units are added to the string. If

the scale is stable, a space is printed, else “MOT.” is printed instead. The

string is then finished by adding a carriage return and a line feed.

STX 2.452 lb MOT.CR+LF

Leading zeros are replaced with spaces.

Space

Carriage return & line feed:

ASCII characters 13 & 10

Motion indicator. Printed only when

scale is in motion. Space if stable.

Fig. 2 Format “F0” standard form.

STX: ASCII character 02 hex

(normally a non printing character)

“+” replaced with a space (“-“ if negative weight)

Displayed weight data

with units. (lb, oz, kg, g )