Functions - Siemens SIMATIC ET 200pro IO-Link Master Manual

2.2

Functions

Introduction
Below is a brief overview of the operating modes of the ports and other functions of the
IO-Link master EM 4 IO-Link HF.
Firmware update
You can perform firmware updates for the IO-Link master.
Additional information about firmware updates for ET 200pro can be found in the ET 200pro
Distributed I/O System operating instructions, chapter "Maintenance and service", section
"Firmware update" on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/21210852).
Master Backup
The "IO_LINK_MASTER" function block is used to read all relevant IO-Link device and
IO-Link master parameters. These can be stored retentively at a central location, such as in
a data block in the IO controller.
The status of the IO-Link devices or IO-Link ports stored in the IO-Link master can be
restored with the "IO_LINK_MASTER" function block.
As a result, the IO-Link ports and the IO-Link master are configured with the values stored in
the master backup.
A typical application is the restoration of parameters after replacement of the IO-Link master.
Note
Availability
Note that the Master Backup function is available only for IO-Link devices that are specified
for the IO-Link Standard as of V1.1.
You will find information on the Master Backup and Master Restore functions in section
"Master backup" of chapter "Integration into the automation system" of the IO-Link System
(https://support.industry.siemens.com/cs/ww/en/view/65949252) function manual.
PortQualifierInformation
Each port has PortQualifierInformation (PQI). This PQI provides information on the device
status of the port and IO-Link. The PQI is transmitted cyclically with the process data.
You will find the structure of the PQI byte in the section Address space (Page 21).
IO-Link Master (6ES7147-4JD00-0AB0)
Manual, 03/2018, A5E37967003-AB
Product overview
2.2 Functions
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