How can I pass the following visa TCPIP constructor by IP address variable.

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Steve Kulakowski
Steve Kulakowski 2019-1-19
评论： Walter Roberson 2019-1-21
The expression:
PS1_obj = visa('NI','TCPIP0::192.168.200.50::inst0::INSTR')...it works as a literal expression but when I try to pass in a variable for the IP address the visa constructor errors.
Example:
ipaddr = '192.168.200.50'
PS1_obj = visa('NI','TCPIP0::%s::inst0::INSTR',ipaddr)...with variable declaration for the IP address.
Error using visa (line 293)
Invalid property: '192.168.200.50' specified.

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回答（2 个）

Walter Roberson
Walter Roberson 2019-1-19
Use sprintf to construct the character vector. The visa() function itself has no provision for substitution of strings.
Steve Kulakowski
Steve Kulakowski 2019-1-21
Thanks for the response, I tried that but it didn't work. I didn't spend alot of time on it, so let me double check the string.....

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