9
CLEAR (X)
!SC <CR> simply clears the active sample.
ACQUIRE (X)
!SQ <descr> <sample size> <CR> adds new sample and becomes interactive for acq
Print Frames
NEW (5.021)
!FN <descr> <CR>
LINE EDIT (5.021) !FL<14 chr src descr> <1 chr line n# 0-9> <2 chr function code> <2 chr arg1> <3 chr arg2>
<CR y/n> <LF y/n> <2chr # spaces> <CR>
DELETE (5.021)
!FD <descr> <CR>
ACTIVATE (X)
!FA <descr> <CR>
Text Definitions
NEW (5.021)
!XN <descr> <CR>
The [@] Command: Interactive Commands [N/A: For Future Expansion]
Remote Span Calibration
(5.010)
Your scale can be span calibrated remotely using this function. The command format is
@CS <descr> <calibration weight value> <CR>
To do this procedure you will need a calibrated weight of a known value. For this example we will calibrate the scale’s
primary platform whose descript
ion is “Plat #001” with a 10 lb weight, the procedure is described below.
You send
“@CSPlat #001 0010.0000<CR>”
Scale responds
"Remove all weight from the pl
atform and then send a CR.”<CR>
You remove the weight from the platform and send a CR.
Scale responds
"Place the calibrated weight on the pl
atform and then send a CR.”<CR>
You place the calibrated weight in the center of the platform and then send a CR.
Scale responds
"Remove all weight from the platform
and then send a CR.”<CR>
You remove the weight from the platform and then send a CR.
Scale responds
"Operation Complete."<CR>
The scale will then remote calibrate itself and return to the weighing mode. You may have to press the ZERO key (or remote
zero key) to get the scale to indicate properly.
Future Interactive Commands
TARE-READ VALUE (X)
@TV <descr> <CR> (sends <value> <CR> or NOT FOUND <CR>)
TARE-READ ALL (X)
@TA <CR> (sends for each <descr> <value> <CR>. Sends END <CR> and end of list)
SAMPLE-READ VALUE (X)
@SV <descr> <CR> (sends <value> <CR> or NOT FOUND <CR>)
SAMPLE-READ ALL (X)
@SA <CR> (sends each <descr> <value> <CR>. Sends END <CR> and end of list)
Tips on Interfacing RS232
RS232 transmission and reception takes place over a three wire cable, one for transmitted data, one for received data and
one for ground. When wiring these lines to a standard RS232 25 pin D connector, the transmitted data line should be tied to
pin 3, received data to pin 2 and ground to pin 7.
For 9 pin connectors, the transmitted data line should be tied to pin 2,
received data to pin 3 and ground to pin 5
. In some situations, computers and other equipment require handshaking lines
to work properly. Many times this can be shut off to work with a three wire system. If not, you can wire the connec
tor to “trick”
the computer etc. to work properly. This involves shorting the RS232 RTS and CTS line together and shorting the DTR and
DSR lines together. For 25 pin connectors short pins 4 and 5 for RTS/CTS and pins 6 and 20 for DTR/DSR. For 9 pin
connectors short pins 4 and 6 for RTS/CTS and pins 7 and 8 for DTR/DSR.
Shown below is a simple program written in BASIC that will open a com port at 1200 baud and then drop into a never ending
loop that will input frames of information and print them on the com
puter’s screen.
10 REM A simple example of a scale to com port interface
20 OPEN ”COM1:1200,N,8,1,CS,DS” AS #1
50 REM Never ending loop
52 REM Send a print request to the scale
55 PRINT #1,”*P”
59 REM Input scale’s transmitted frame
60 INPUT #1,FRAME$
