Baumer FHDx14 IO - Manual (Page 5)

en_BA_FNDx14_FHDx14_IO.doc 5/14 Baumer Electric AG
12.04.2013/hem Frauenfeld, Switzerland
2.3 IODD (IO-Link device description)
The IODD describes the IO-Link device and can be downloaded at www.baumer.com. It consists of a set of
XML and PNG files. An engineering tool or diagnosis tool reads the IODD of a sensor and therefore knows
its:
•
Identification (manufacturer, designation, article number, etc.)
•
Communication characteristics (communication speed, frame type, etc.)
•
Parameters and commands
•
Process data
•
Diagnosis data (events)
Sensor data that can be viewed and changed is defined by the IODD. The manner of data representation
and manipulation is defined by the control manufacturer and is therefore sensor-independent.
3 Sensor in SIO mode
In SIO mode the sensor operates according to the factory settings or the settings adjusted by the user via
IO-Link. The range of functions in SIO mode is sensor-specific.
4 Sensor in IO-Link communication mode
4.1 Process data
If the sensor is in IO-Link communication mode, data are periodically exchanged between the IO-Link master
and the device. These data consist of process data and possible commands and parameters to the sensor.
In the process data the current measuring value and status bits like output, quality data, etc. are transmitted
to the master. The process data do not have to be explicitly queried by the master.
4.1.1 Process data structure
Figure 1 shows the process data structure. A brief description of the individual data is provided in the
following.
Figure 1: Process data
4.1.1.1 Back-up
Bit4…Bit15 serve solely as a back-up and are reserved with the value 0.
4.1.1.2 Meaning of status information
Bit 0: Alarm
The alarm bit indicates whether an object is in the defined scanning range (e.g. 50 to 400 mm)
Bit0 = 0
→ There is an object is in the scanning range
Bit0 = 1 → There is no object in the scanning range
Bit4…Bit15 Bit1 Bit0 Bit2 Bit3