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SMS receiver is a service responsible for command execution that was received via text message. The service is available on WCC Lite with the modem. To use this service a working SIM card is also required. This chapter will describe command types and configura...

General Various protocols are made to transmit data points as they are generated. This is enough for a lot of systems (e.g. SCADA) that have their databases and devices only have to buffer fairly recent messages in case of connection or transmission errors. H...

After a project has been built and bound to an existing Excel configuration, a user would normally want to check if every part is working according to the prior requirements before compiling the finished project and uploading it to production. Both the 4Diac f...

To use WCC Lite as a programmable logic controller, it needs to be configured in a particular way. The PLC functionality of the WCC Lite only allows for the use of data that has been configured in the Excel configuration spreadsheet. This has been done for sec...

The best way to understand the basics of 4Diac and WCC Lite collaboration is through an example project. This user manual intends to show the pieces needed to run PLC applications on WCC Lite. It is not intended to be a definitive guide on how to use 4Diac IDE...

The PLC functionality in the WCC Lite is implemented using the Eclipse 4diac framework, consisting of the 4diac IDE and the 4diac FORTE runtime. The system corresponds to IEC 61499, an extension of IEC 61131-3. For more in-depth instructions and function blo...

IEC 61499-1 defines the architecture for distributed systems. In IEC 61499 the cyclic execution model of IEC 61131 is replaced by an event-driven execution model. The event-driven execution model allows for an explicit specification of the execution order of f...

Introduction Lua is a powerful, efficient, lightweight scripting language. It has been used in many industrial applications with an emphasis on embedded systems. Lua has a deserved reputation for performance. To claim to be "as fast as Lua" is an aspiration o...

Introduction MQTT (short for MQ Telemetry Transport) is an open OASIS and ISO standard (ISO/IEC PRF 20922) lightweight, publish-subscribe network protocol that transports messages between devices. The protocol usually runs over TCP/IP, although its variant, M...

Devices that send unencrypted data are susceptible to attacks which might cause deliberate damage to the user system. Therefore it is highly advised to use cryptography to secure sensitive data. WCC Lite offers means to easily store certificates for their late...

There are two types of command signals used in SMS Receivers: System: reboot wcc/reboot modem – when sending a message with text reboot, the device starts rebooting and after successful reload sends back a message to the sender with text  REBOOT OK.  sw...

WCC Lite is based on the OpenWRT operating system. OpenWrt is described as a Linux distribution for embedded devices. WCC Lite has the same functionality as Linux OS including user management. Basic configuration on WCC Lite can be done using a web-based fron...

WCC Lite can be used as a master station to collect data from IEC 61850 compatible server devices such as protection relays. As relays require fast, secure and responsive interfaces, WCC Lite can be considered as a valid option. For additional security, a user...

WCC Lite can act as an IEC 61850 server to serve data to remote SCADA systems. For example, WCC Lite can be used to acquire data from various protocols (Modbus, IEC 60870-5-103, etc.), this data can be redirected and propagated further to a single or multiple ...

IEC 61850 is an international standard defining communication protocols for intelligent electronic devices at electrical substations. It is a part of the International Electrotechnical Commission’s (IEC) Technical Committee 57 reference architecture for electr...

This document is intended to act as a user manual and explain WCC Lite usage in detail. It is expected the person referring to this manual is experienced in programmable logic controllers (PLC), networking (IPv4, ethernet) and the use of the operating system o...

To upgrade the firmware from version 1 to version 2, the user should first connect the IOMOD via a mini USB as required for IOMODs with older firmware. More information on how to set up an IOMOD device for USB configuration can be found in each IOMOD's manual ...

1. Introduction IOMod 4Cs4Vs is a compact-sized stand-alone power meter for measuring analog AC input signals from low-power current and voltage sensors.  It measures three AC voltages and current phases with additional inputs for neutral/residual voltage and...

1. Introduction IOMod 4RTD is a standalone temperature sensor device. Designed to measure temperature over a wide range with high accuracy and repeatability even during frequent heating and cooling cycles. 4RTD is equipped with 4 temperature channels to enabl...

After the PLC design is finished and debugged, such a design can be compiled into an FBOOT file and uploaded to one or multiple devices to be used in production. As the application being debugged is not automatically considered as a default application, one sh...