If the IO-Link Master is replaced, the new master reads the IO-Device parameters from
the device and saves them. The “Save and Restore” data storage function must be
activated for this purpose. The application can also be restarted here without further
intervention via a configuration tool or the like.
The data retention mode is only available for devices that comply with IO-Link version
V1.1 and higher.
3.1.3 Dual Talk (IIoT interfaces)
The SIG350 features Dual Talk functionality, which allows the user to address the
module from IT networks and integrate it into Internet-of-Things applications.
The SIG350 contains the following interfaces:
•
MQTT JSON
•
REST API JSON
•
OPC UA
REST API
The Representational State Transfer – Application Programming Interface (REST API) is
a programmable interface that uses HTTP requests for GET and POST data. This allows
access to detailed device information. The format is JSON.
The REST API interface of the SIG350 complies with the JSON Integration for IO-Link
standard version V1.0.0 published by the IO-Link community.
MQTT
The MQTT (Message Queuing Telemetry Transport) protocol is an open network protocol
for machine-to-machine communication that enables the transmission of telemetric
data between devices.
An MQTT client is integrated in the SIG350, which enables the device to publish certain
information to an MQTT broker. The format is JSON.
The publication of messages can either take place periodically or be triggered man‐
ually.
The MQTT interface of the SIG350 complies with the JSON Integration for IO-Link
standard version V1.0.0 published by the IO-Link community.
OPC UA
OPC United Architecture (OPC UA) is a platform-independent standard with a service-
oriented architecture for communication in and with industrial automation systems.
The OPC UA standard is based on the client-server principle and enables machines
and devices to communicate horizontally with each other and vertically with the ERP
system or the cloud, regardless of the preferred fieldbus. The SIG350 provides an OPC
UA server at field device level, to which an OPC UA client can connect to exchange
information securely. The interface complies with the IO-Link Companion specification
(version V1.0).
3.1.4 Web interface
The SIG350 has an integrated web interface that provides functions for device configu‐
ration and the display of status and diagnostic information via a web interface. The web
interface provides an overview of the configuration and status of the device.
The graphical user interface ensures fast and intuitive operation.
The prerequisite for using the web interface is the existence of a valid IP address. This
can be set via the rotary switches directly on the device or via the DCP tool. SICK also
offers the SOPAS ET engineering tool, which can be used to configure the SIG350.
3 PRODUCT DESCRIPTION
10
O P E R A T I N G I N S T R U C T I O N S | Sensor Integration Gateway - SIG350 8027834./2022-06-10 | SICK
Subject to change without notice
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