Io-Link Overview; Input/Output Data; Isdu Data; Events - Balluff BNI CCL-502-100-Z001 Betriebsanleitung

Balluff Network Interface – CC-Link – BNI CCL-502-100-Z001
5 Communication interfaces and modes

5.3. IO-Link overview

Input/Output data

ISDU data

Events

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The BNI CCL-502-100-Z001 module features 4 IO-Link master ports (called IO-Link ports*).
When a port is enabled as IOL port, pin1, pin4 and pin3 are used for IO-Link communication
as described in section "Connection data". The remaining pin2 is still a freely configurable
SIO pin.
The IO-Link master functionality of the BNI module supports IO-Link 1.1 communication
standard. Input/Output data, ISDU data and Events of the IO-Link connections are all
available in the BNI module.
Regular input and/or output data of the connected IO-Link slave. For example data used to
turn outputs of the IO-Link slave on, or data indicating the input status of the slave. Data is
refreshed every time the CC-Link data is refreshed. Maximal size of Input/Output IO-Link
data is determined by module settings.
Data transferred on-request, providing description of the IO-Link slave and access to its
settings -if there are settings available-. This data can be accessed using the acyclic
messaging mode of CC-Link communication.
Events are generated automatically by the IO-Link slave or master in case a specially
defined condition occurs. For example a connection is established or lost (master). Low
supply voltage is detected, short circuit on the slave output is detected (slave) etc. Events of
a given port are described by EventMode and EventCode. Every IO-Link channel* of the
BNI CCL-502-100-Z001 module has a 4 elements deep FIFO type queue to store event
data. So at reading, the oldest stored event data is read out. This data can be accessed
using the acyclic messaging mode of CC-Link communication.
(* see chapter "Port Configuration")
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