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APPENDIX B: SERIAL PORT INFORMATION
SERIAL PORT MODES
DEMAND DUPLEX MODE
The Demand Duplex Mode (A3 = ‘d’, A6 = ‘0’) provides a two way serial transmission mode In this
mode, the output information is transmitted on demand; either by pressing the PRINT key on the
indicator’s front panel or upon receiving a recognized command from a host device (i.e. computer).
NOTE: Ensure that your cabling contains the proper handshaking.
CONTINUOUS DUPLEX MODE
The Continuous Duplex Mode (A3 = ‘C’, A6 = ‘0’) provides a two-way serial transmission mode. In
this mode, the output information is transmitted continuously making it a popular choice for remote
displays and other remote devices requiring a constant data stream. The transmission automatically
occurs at the end of each display update. The indicator will react upon receiving a recognized
command from a host device.
RECOGNIZED HOST COMMANDS (applies to both demand and continuous duplex modes)
“P” - This command is sent to the indicator to print the indicated display. The indicator will not
respond if the scale is in motion, positive overload or negative overload.
“Z” - This command is sent to the indicator to zero the scale. The indicator will not respond if the
scale is in motion, positive overload or negative overload. The indicator will also not respond if
it is not in gross mode or within the zero range specified in F4 of the Setup Menu.
“T” - This command is sent to the indicator to tare the scale. The indicator will not respond if the
scale is in motion, positive overload or negative overload. The indicator will also not respond if
it displaying a negative gross value.
“G” - This command is sent to the indicator to switch to gross mode. The indicator will not respond if
the scale is in motion, positive overload or negative overload.
“N” - This command is sent to the indicator to revert to net. The indicator will not respond if the scale
is in motion, positive overload or negative overload. The indicator will also not respond if a tare
has yet to be established.
“C” - This command is sent to the indicator to toggle among the configured units of measure.
