The WITTMANN 4.0 option extends the UNILOG B8 machine control system by a separate production cell control system (the WITTMANN 4.0 Router), which performs various communication tasks as well as protective functions. One of these functions is the external firewall, which has been optimized for operation with injection molding machines.
In this way, the WITTMANN 4.0 Router shields the machine’s control system from the outside world. Unlike office PCs, injection molding machine control systems cannot normally be upgraded automatically to the latest operating system software and be equipped with the most recent security patches. An update would first have to go through an elaborate, time-consuming verification process carried out by the manufacturer. As a result, malware can in the meantime exploit security gaps in the operating systems of machine control systems which are already known but not yet closed. One possible scenario is the misuse of machine control systems for denial-of-service (DoS) attacks, which in the worst case will cause control system failure and thus production standstill.
The WITTMANN 4.0 Firewall has been optimized for the typical use of an injection molding production cell (restrictive firewall). As standard, virtually all ports are closed, which are not dedicated to essential external communication of the injection molding machine and the appliances connected with it. The expressly permitted communication processes are also subject to continuous plausibility testing (intrusion detection). If the communication volume exceeds the typical volume of data to be expected, this could point to a DoS attack, which is then stopped by immediate counteraction.
Another security aspect is the aggregation of the OPC-UA servers of the injection molding machine and the auxiliary appliances in the WITTMANN 4.0 Router. So, the communication between an external data client and the actual appliance or the injection molding machine within the production cell takes place exclusively via an aggregation server in the WITTMANN 4.0 Router. All requests from external clients are dealt with directly inside the router without being passed on to the physical appliances. This is a further security feature.
The WITTMANN 4.0 Router is equipped with a secure boot process which allows automatic updating of the operating system as long as the respective update has a certificate from WITTMANN. This prevents the installation of fake updates in the hardware which could be capable of circumventing all kinds of security installations.
It must be expected that machines will increasingly need to be accessible from outside in future. This makes it all the more important to have secure access to the entire production cells, such as the access provided by the WITTMANN BATTENFELD UNILOG B8 control system in combination with the WITTMANN 4.0 Router.
The WITTMANN Group is a worldwide leader in the production of injection molding machines, robots and peripheral equipment for the plastics processing industry, headquartered in Vienna/Austria and consisting of two main divisions: WITTMANN BATTENFELD and WITTMANN. These two divisions jointly operate the companies of the WITTMANN Group with eight production plants in five countries. Additional sales and service companies are active in 34 facilities in important plastics markets around the world.
WITTMANN BATTENFELD pursues the further expansion of its market position as an injection molding machine manufacturer and specialist for state-of-the-art plastic processing technologies. As a supplier of comprehensive, modern machine technology in modular design, the company meets both present and future market demands for plastics injection molding equipment.
The WITTMANN product portfolio includes robots and automation systems, material handling systems, dryers, gravimetric and volumetric blenders, granulators, temperature controllers and chillers. With this diversified range of peripheral units, WITTMANN offers plastics processors solutions to cover all production requirements, ranging from independent production cells to integrated plant-wide systems.
The integration of these various segments under the umbrella of the WITTMANN Group has led to complete connectivity between the various product lines. This integration has greatly benefited plastics processing users, who are increasingly looking for seamless production, including automation and peripheral functions.