Open the SC-1200 COM port using the settings: 9600,8 data bits, No parity, 1 Stop bit, No flow control.
Simply send a <CR> should get you the response 'A'.
Each SC-1200 has a 3 letter identifier. For example M10, M11 etc. Many responses are prefixed with this ID.
To find out your ID just type MID<enter>. The SC-1200 will respond with M08 for example. (This may also be used to confirm that there is indeed an SC-1200 connected to this port.
Each of the 12 load cell ports is identified by a unique channel no, S01, S02 through S12
To tare port 1, type (or send)
T Mxx.R00.C00.S01<Enter>.
The SC-1200 will respond with T Mxx.R00.C00.S01. Do not send any other command till the response is received.
To tare port 2, type (or send) T Mxx.R00.C00.S02<Enter>
...
To tare port 10, type (or send) T Mxx.R00.C00.S10<Enter>
...
and so on
You can tare ALL the ports by the command
T Mxx.R00.C00
by omitting the port number.
To read the weight of a load cell connected to port 1, type (or send)
W Mxx.R00.C00.S01
The SC-1200 will respond with the weight in millipounds, like so
W Mxx.R00.C00.S01 2012 (that is 2.012 lb)
You can read the weights on all the ports by the command
W Mxx.R00.C00
by omitting the port number.
The SC-1200 will respond with 12 lines, each returning the port number and the weight.
W Mxx.R00.C00.S01 101 (.101 lb)
W Mxx.R00.C00.S02 3397 (3.397 lb)
W Mxx.R00.C00.S03 -999999 (load cell not connected)
…
W Mxx.R00.C00.S12 5323 (5.323 lb)
Note that the responses may not always start from port 1. Sometimes you may get a response starting from port 8, then 9, 10, 11, 12, 1, …7 etc. So be sure to parse the result to get the correct port number and the associated weight.
A weight of -99999 indicates that the port does not have a load cell associated with it, or SC-1200 has a problem reading the load cell. Try powering down the SC-1200 and then powering it back up again.
When you send a command, terminate with just a <CR>, not <CRLF>. When you process the responses, process a <CRLF>
