14
APPENDIX B:
SERIAL PORT INFORMAT
ION
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
;
ei
ther
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
: E
nsure that
your cabling contains the
proper handshaking
.
CONTINUOUS DUP
LEX MODE
The
Continuous Dup
lex 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 r
e
quiring
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.
R
ECOGNIZED 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 mo
tion, 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, positi
ve 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 e
stablished.
“C”
-
This command is sent to the indicator to toggle among the configured units of measure.
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