Page B-8
B.1.9 FAIRBANKS 70-2453-4 DEMAND FORMAT
Figure B-12 shows the weigh data / status record sent to the host when the scale receives a
Print (<CR>) 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.
XXXX.XXX
<UNITS>
<GR/NT>
Weight digits*
<SP>
<SP>
Space
Space
* with leading zero suppression
<EOT>
End
Transmission
<SP>
Two Status Bytes:
<CR> <LF>
Space
Carriage
lb = pounds
kg = kilograms
Units:
<SP>
Space
Return
Carriage
Return
GR = gross/stable
gr = gross/unstable
nt = net/unstable
NT = net/stable
FIGURE B-12. Fairbanks “Demand” Weigh Data / Status Record
B.1.9.1 RECOGNIZED HOST COMMANDS
These commands are issued from the host to the scale and are single ASCII
characters.
“<CR>”
- This command is sent to the scale to print the indicated display. The
scale will not respond if the scale is in positive overload. The host should
check the status bytes to determine if the scale is in motion.
“Z”
- 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 a <CR> command to determine
if the command was processed by the scale.
“T”
- This command is sent to the scale to tare 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 displaying a
negative gross value. Even if successful, the host receives no response from
the scale. The host must issue a <CR> command to determine if the
command was processed by the scale.
“G”
- This command is sent to the scale to revert to gross mode. 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
net mode. Even if successful, the host receives no response from the scale.
The host must issue a <CR> command to determine if the command was
processed by the scale.
“N”
- This command is sent to the scale to revert to net. 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 a tare has yet to be established. Even if successful, the host receives no
response from the scale. The host must issue a <CR> command to determine
if the command was processed by the scale.
