Fieldbus Process Data Out Overflow (16-bit)

What does 1312 mean?

An overflow has occurred during the mapping and conversion of values for Fieldbus Process Data Out (specifically 16-bit values). This means that a value being transmitted is too large to be represented accurately within a 16-bit data format, leading to truncation or incorrect data. This can result in inaccurate control or monitoring feedback.

• The value of a drive parameter mapped to a 16-bit Fieldbus Process Data Out exceeds the maximum representable value (e.g., >32767 for signed, >65535 for unsigned).
• An incorrect scaling factor (e.g., P4-10 for output scaling) is applied, causing the actual value to be inflated beyond 16-bit limits.
• Attempting to map a 32-bit internal drive parameter directly to a 16-bit fieldbus register without appropriate data handling.
• Internal calculation error within the drive producing an excessively large value for a mapped output parameter.

Click steps to track your progress.

1. 1

   1. Identify the specific Fieldbus Process Data Out parameter causing the overflow and its current value (e.g., via drive's local HMI or monitoring software).

2. 2

   2. Adjust the scaling factor for the affected Process Data Out (e.g., P4-10 for output scaling) to reduce the transmitted value to fit within 16-bit range.

3. 3

   3. If possible, change the fieldbus mapping in the PLC to use a 32-bit data type for the affected parameter if the fieldbus master supports it.

4. 4

   4. Verify the range of the internal drive parameter being mapped to ensure it is not inherently exceeding 16-bit limits.

5. 5

   5. Consider using a different, lower-resolution parameter for the fieldbus output if high precision is not critically required.