Correct PLC syntax for AND condition

Hello,

What is the correct syntax for an AND condition inside a conditional?

I am trying to do the following:

if ((OMEGA_POSITION / OMEGA_SCALER) > OMEGA_LOW_THRESHOLD) && ((OMEGA_POSITION / OMEGA_SCALER) < OMEGA_HIGH_THRESHOLD)

{

OMEGA_POSITION_OK = 1;

}

else

{

OMEGA_POSITION_OK = 0;

}

Related to this, is there a way of getting the pre-processor to tell you what error it sees?

eg. With,

projpp

Error: projpp errors = 1

This message would be more helpful if it told you the error and which file and line number.

Thanks for any help,

James

You want both conditions to be inside the outer most parenthesis of the if statement.

if ((OMEGA_POSITION / OMEGA_SCALER > OMEGA_LOW_THRESHOLD) && (OMEGA_POSITION / OMEGA_SCALER < OMEGA_HIGH_THRESHOLD))
or
if (OMEGA_POSITION / OMEGA_SCALER > OMEGA_LOW_THRESHOLD && OMEGA_POSITION / OMEGA_SCALER < OMEGA_HIGH_THRESHOLD)

As far as the error message goes, usually if I double click on the error it puts me on the correct line of the correct file in the IDE. If double clicking doesn't work, could you give me a screenshot of the error?

The "&&" is the correct syntax for the logical "and" conditional combinatorial operator.

You can view the errors in the "Error List" tab. When you double-click on an error it will open the source file in the editor window with the cursor at that position.

Thank you - the outer parentheses did the trick!

Regarding the pre-processor error, I'm not using the IDE. I'm connecting using telnet and running the pre-processor from the command line (see screenshot). Can I get any useful error messages at this level?

The errors are in the project "Log" folder.

Please note that we don't "officially" support usage of "projpp" outside of the IDE.