Maa-LeeN

Thank you for everyone's reply. i found out whats the problem is. it has problem with the VISA and i can run the porgram now. tq. thank you for everyone opinion.

tq for the reply. ill try again checking using MAX and setting my parameters correctly. hope i can get it dis time. thanx. Ive checked using MAX. when i used the visa write to identify the instrument, the return count value is 6. then i try to check the read buffer but the error ios VI_ERROR_TMO: Timeout expried before operation completed. so,what can i do to overcome that problem? can anyone gimme any suggestions? thanx in advance.

I am reading a device with a rs232 interface 300 baud 7/1/n/1 i keep facing the the same error...error with the visa read. bytes not read are in the serial buffer anyone who can help me with some hints? thanks

hye everybody. i am doing a serial communication programe using Labview 8 but i cannot get any response. The instrument that im currently used is Lakeshore Temperatuere Controller Model 321 that use RS232. everytime i send the command, *IDN? in the labview programme, it will said the the VISA read has an error, VISA Read Error but i cannot identify what is the error. ive check using the MAX and the device is working properly. someone plss help me. It is urgent. tq