Baumer BA FADx14 IO - Manual (Page 13)

BA_FADK14IO-Link_V01-02-11_EN.doc 13/18 Baumer Electric AG
04.12.2012 Frauenfeld, Switzerland
5.2.5 Error Handling
The learned switching points lie closer together than permitted in the minimum teachable switching window
(10mm):
•
Error message: Interfering parameter (refer to: Table Fehler! Verweisquelle konnte nicht gefun-
den werden., Fault codes);
•
Interim register is set to FFFF FFFF hex;
•
The most recent valid values remain active.
The learned switching points lie outside the original measuring range (measuring range on the specification
sheet):
•
Numerical teaching: Unable to write to Switching points work, error message: Parameter value
out of range. The most recent valid values remain active.
5.3 Soiled Lens Indicator
5.3.1 Parameter
Nominal value
Quality parameter:
Limit value for assessing the receiving signal quality. If the received amount of
light falls below this adjustable limit, the process data quality bit is set.
- Value range:
1-8
- Factory setting: 7
Quality parameter:
Actual reception quality.
5.3.2 Description
The sensor’s illumination controller allows a determination of whether adequate signal reserves still exist, in
order to provide reliable measurements. This signal reserve is indicated quantitatively by the Quality pa-
rameter. Should the Quality parameter drop below the value specified in the Nominal value quality pa-
rameter, this is displayed in the quality bit of the process data.
Application example:
When setting up an application, reading the Quality parameter on a regular basis can help determine what
its lowest value is. The threshold of the Nominal value quality parameter can then be defined 1-2 steps
lower. If, during actual operation, the Quality parameter drops below this threshold value for whatever rea-
son, a signal is output. At this point, the application continues to operate normally, the sensor should, howev-
er, be inspected as soon as feasible. Some reasons why the Quality parameter is activated include the
following:
Sensor dirty Sensor must be cleaned;
Sensor incorrectly adjusted Sensor must be readjusted;
Some factor in the application may have changed, e.g., an alteration to the object’s surface
features
Sensor (Nominal value quality parameter) needs to be readjusted.
This function helps prevent the failure of the sensor by permitting appropriate countermeasures to be taken.
Important: The sensor will still continue to provide problem-free operation, even at a Quality parameter
of only 1. As high as possible a value does not necessarily need to be set!