3
The status word is transmitted in the following format:
1 = Motion
0 = No Motion
1 = Over Capacity
0 = Not Over Capacity
1 = Below Zero
0 = Zero or Above
1 = Center of Zero
0 = Not at Center of Zero
Pounds/Ounces Mode Selected (Both Scale Models)
ASCII
SO
(%0E) =>
Enable Continuous Output
Disable On-Demand Output
ASCII
SI
(%0F) =>
Disable Continuous Output
Enable On-Demand Output
ASCII
~
(%7E) =>
Transmit Weight in Pounds/Ounces Mode
Data Format: <STX>bPPPbLBb00.0bOZbXCC<ETX>
where:
<STX>
= ASCII STX
b
= ASCII Space
PPP
= Weight in Pounds
LB
= Text Indicating Pounds
00.0
= Weight in Ounces
OZ
= Text Indicating Ounce
X
= Status Character
M = Motion
B = Below Zero
C = Over Capacity
CC
= Checksum Byte
Checksum Byte - All hexadecimal digits up to but not including the checksum are exclusive-or’d with
each other to form a checksum byte. The byte is further split into two nibbles with the high nibble first.
Each nibble is or’d with an ASCII 0 (%30) to produce the final ASCII checksum value.
ASCII EOT (%04) =>Version Request Command
Causes the scale to transmit scale software revision level in the
following format: <STX>VVVCC<ETX>
where:
<STX>
= ASCII STX
VVV
= 3 Digit Revision Level
CC
= Checksum Digits
<ETX>
= ASCII ETX
The checksum digits (CC) are formed by exclusive or-ing all three version number digits (VVV) to
produce a checksum byte. This byte is then split into two nibbles with the high nibble transmitted first.
Each nibble is or’d with an ASCII 0 (%30) to form the final ASCII checksum representation.
MAINTENANCE
There are no user replaceable or serviceable parts contained within your AS-300 series scale. Do not
disassemble the scale. Maintenance should be limited to cleaning the exterior of the scale enclosure
with a damp cloth.
CAUTION! Make certain that you have turned the power switch to the OFF position and
removed the power cord from the wall outlet before cleaning the scale.
Should you ever need to replace the fuse, make certain that only fuses of the same type and rating
are used to ensure continued electrical protection. If you have any questions concerning service, you
should contact your scale service representative.
0
1
1
0
X X X X
^
^
^
^
