Siemens alarm 14051: Channel %1 block %2 arithmetic error in part program

What it means

During evaluation of a program expression an arithmetic fault occurred - classically division by zero, square root/logarithm of a non-positive value, or floating-point overflow. R-parameter or variable computation produced an undefined result. Guard divisions and validate computed intermediate values.

Likely causes

• Division by zero from a constant, variable or expression
• SQRT/LN applied to a non-positive argument
• Overflow from very large intermediate values