Measurement Overflow

What does 260 mean?

This error occurs when the measured signal value on an analog input channel exceeds the maximum range the I/O module can process. This often points to an incorrectly scaled sensor, an over-range input signal, or an issue with the sensor's power supply, leading to inaccurate measurements.

• The connected analog sensor is providing an output signal (e.g., 22mA, 11V) that exceeds the module's maximum input range (e.g., 20mA, 10V).
• Incorrect scaling parameter (e.g., P3-01 'Max Analog Input Value') configured in the I/O module's settings.
• Damage to the sensor itself, causing it to output an artificially high signal (e.g., short circuit within sensor).
• Wiring error where the analog input channel is inadvertently connected to a higher voltage source than intended.

Click steps to track your progress.

1. 1

   1. Disconnect the sensor and measure the actual analog signal (e.g., current or voltage) at the sensor's output terminals.

2. 2

   2. Using a multimeter, measure the voltage or current at the analog input terminal block of the I/O module.

3. 3

   3. Verify that the configured input range parameter (e.g., P3-01 or scaling limits) in the I/O module matches the sensor's output range.

4. 4

   4. Inspect the sensor for physical damage or signs of malfunction, such as internal shorts.

5. 5

   5. Ensure the input wiring is routed correctly and not inadvertently connected to an auxiliary supply voltage.