Hi i need help to trace out the error in the RS232 communication:
I have device and it is connected with the Rs232 cable to my PC. I am using the Labwindows CVI
'serial' example which shows the serial communication using the Labwindows CVI.
Now my device has several parameters as output. I have to send the string which
specifies the parameter and fetechs the result or device responce. I use the ComWrt and ComRd functions to get read out that parameters
and display them in the PC.
I make sure that the communication is established successfully by using some external softwares.
Now problem is,
I have to send the "Ctl A" first, then i have to send the password and then i need to check the status.
1) I have received the proper responce when i sent the equalent string for Ctrl A like "\x01".
If send the equlent string like 'RS_Password' , and i send the 'RS_status' next to that,
I am getting the responce from the device like 'RS_Password @'. Actually i am expecting a null string
or if i feed 'RS_Status' I am expecting the result/device responce as '1'. But i always get the respoce as
'RS_Status@' I checked out both commends by using the external software. I am not sure that the device gives the responce to the PC.
I am not sure why i could't get read out the values by using the Labwindows CVI.
2) After sending the 'RS_password' or RS_Status i have to send the 'enter'. I am using '\r\n'. Eventhough i have no proper responce from the device.
In the Rs 232 serial example.....
