handling underflow in macro calculations

[sinha_nsit]

A value, arising out of a macro calculation, lying between -10exp-29
and +10exp-29 (but not equal to 0) is not permitted, generating an
alarm condition (CALCULATED DATA OVERFLOW).

However, a programmer may desire that the control should ignore
this "error”, and treat any value in this range as 0. This might be
possible through a parameter setting. Can you please let me know
this parameter.

6004#1 is for a different purpose (only for SIN, COS and TAN), and
does not work in this case.

Thanks.

[stevo1]

What is the code that you are getting the alarm from? I don't know of a parameter that change adjust that.

What i do to not allow the over calculation or leading 0's to calculate to far is use the ROUND function. Even if you need a accurate number say 5 places past decimal you can use the round to make sure you get .00001 ect.

Stevo

[sinha_nsit]

My question is purely of academic interest, which is not likely to occur anytime. Consider the following:
#1 = .00000001
#2 = #1 * #1 * #1 * #1
This would generate an alarm because #2 is less than 10 exp(-29).

However, this is a case of mathematical underflow, and can be treated as 0, for further calculations. But, the control does not do that. Possibly, there might be some parameter for this to happen.