60 Rockwell Automation Publication 1734-UM020B-EN-E - August 2019
Appendix B Supported IO-Link Master Events
IO-Link Master Event Codes
The IO-Link Interface and System Specification document provides an
enumeration and definition of IO-Link defined events. Unique event conditions
can also be defined by the IO-Link device or the IO-Link master stack. Events
defined by the stack are shown in the table below.
Event Count
The Event Sequence Count is a count value assigned to each event. The value
increments for each received event. Range of values is -127...127; a value of zero is
not valid and can indicate that no event is present in a fixed field within I/O
produced input data.
IO-Link Master Module Events
Event Code Description
0x0002 The Sensor had sent a wrong PDU. After three retries the connection will be
aborted and the device lost event DEVICE_LOST. The stack will automatically
reconnect the sensor.
0x000C This event is used if only a change in the data valid bit has been detected.
0x0010 This event will be generated if a connection could not be established due to an
absent sensor or if a running connection has been aborted (for example, by
pulling a sensor). The stack will automatically attempt to reconnect the sensor.
0x001B This event will be generated if a retry occurs.
0x001E A short circuit was detected.
0x001F An undervoltage of the system sensor power supply has been detected.
0x0020 An undervoltage of the system actor power supply has been detected.
0x0021 An undervoltage of the power supply of a single port has been detected.
0x0022 Reset of a channel has been done.
0x0024 This event will be generated when the connection to a sensor has been
established, but the connection is not in operate state.
0x0040 Process data input length does not match
0x0041 Process data output length does not match
0x0043 Vendor id is wrong V1.1 sensor
0x0044 Device id is wrong V1.1 sensor
0x0045 Vendor id is wrong V1.0 sensor
0x0046 Device id is wrong V1.0 sensor
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