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fbarresi / BeckhoffHttpClient

Unofficial TwinCAT function for HTTP-Client and Json conversion

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String variable 'in' too short for the VAR_IN_OUT parameter

ramonneves opened this issue · comments

commented

Hello!
When I'm trying to compile, I get the following errors in the HttpClient POU:

String variable 'in' too short for the VAR_IN_OUT parameter 'Body' of 'F_STRING'
String variable 'in' too short for the VAR_IN_OUT parameter 'Address' of 'F_STRING'
String variable 'in' too short for the VAR_IN_OUT parameter 'CallMethod' of 'F_STRING'
String variable 'in' too short for the VAR_IN_OUT parameter 'ResponseCode' of 'F_STRING'
String variable 'in' too short for the VAR_IN_OUT parameter 'Response' of 'F_STRING'

commented

Hi!

This is an error in the function F_STRING of the Tc2_Utilities Library used for formatting the parameters.

It is explained here: https://infosys.beckhoff.com/english.php?content=../content/1033/tc3_plc_intro/36028799547735179.html&id=

Look at the example at the bottom of the page.

Best regards!

commented

Hello!

Thanks for your answer.
I solved the problem inserting the uncompiled code in my project and changing the VAR_INPUT of type STRING to STRING(MAX_STRING_LENGTH).

Regards!

commented

Hi!
You are welcome!

Please, be careful with this stuff...
Why?
Sadly are command line arguments under beckhoff limited to 255 chars. I decided to limit every parameter to a
string or string(80) because thy are combined into a T_MaxString in order to keep the arguments under the limit of 255 chars.

So if your arguments are a full STRING(MAX_STRING_LENGTH) they will be cut.

Best regards.