Making the balance print programmatically through the serial port.

Question

How to? I am using SerialPort.Write function and it looks like it works most of the time, but out of the blue it just stops working.

I also noticed that every time I send the command to print (even though I follow the manual, P with carriage return), I get string containing "ES" back - which according to the manual means error even though the weight is captured. Then suddenly, the scale stops reacting to the print command at all.

here is my code:

                    //send the print command to the balance:
                 Byte[] bytes = {80, 13}; //50 0D


                _sp.Write(bytes,0,bytes.Length);

_sp is an instance of SerialPort class. I am using OHAUS CD-11 balance; app is written with c# on compact framework 2.0, hp thin client, WinCE 5.0

Any ideas are appreciated. SHould be simple to do but apparently not.

Answer 1

Are you sure your baud rate / stop bits etc. are right (see page 12 & 13 in the manual)?

Answer 2

Maybe just CR doesn't work even though the manual suggests it does? i.e. Have you tried

Byte[] bytes = {80, 13, 10}; //50 0D 0A