Page B-5
“Z”<CR>
- This command is sent to the scale to zero the scale. The scale will
disregard this command if the scale is in motion, positive overload or
negative overload. The scale will also disregard this command if it is not
in gross mode or within the zero reset range. Even if successful, the host
receives no response from the scale. The host must issue an “S”<CR>
command to determine if the command was processed by the scale.
“S”<CR>
- This command is sent to the scale to request the status record.
B.1.6 TRANSCELL TECHNOLOGY DEMAND FORMAT
Figure B-8 shows the weigh data record sent to the host when the scale receives a Print
(“P”) command. The same weigh data record is sent out of the serial port if the PRINT key
is pressed on the scale’s front panel. If the weigh data is invalid, the scale sends the status
record shown in Figure B-9. See section below for more information.
<STX>
<+/–>
XXXX.XXX
<UNITS>
<GR/NT>
<CR> <LF>
Polarity:
+ = Positive
– = Negative
Weight digits*
Units:
lb = pound
kg = kilogram
Gross/Net:
GR = Gross
NT = Net
Start
Transmission
Carriage
Return
Line
Feed
<SP>
<SP>
Space
Space
* with leading zero suppression
<ETX>
End
Transmission
FIGURE B-8. Transcell Technology “Demand” Weigh Data Record
<S1>
<ETX>
End
Transmission
Status Character 1:
See Continuous Mode
?
Question
Mark
<S2>
Status Character 2:
<STX>
Start
Transmission
See Continuous Mode
FIGURE B-9. Transcell Technology “Demand” Status Record
B.1.6.1 RECOGNIZED HOST COMMANDS
These commands are issued from the host to the scale and are single ASCII
characters.
“P”
- This command is sent to the scale to print the indicated display. The scale will
respond with the status record instead if the scale is in motion, positive
overload or negative overload.
