To enable system operators to move even more freely along the production line, SIGMATEK has developed a wireless roaming feature for wireless HMIs.

The TÜV-certified, wireless operating solution with Safety-to-go from SIGMATEK consists of three main components: a wireless panel from the HGW 1033 series with Safety elements (SIL 3/PL e), the base station BWH 001 as the access point and charging station and an S-DIAS Safety control.

To increase the quality of the wireless transmission in the immediate machine environment, a redundant transmission process is implemented. Safety and payload data are simultaneously transmitted over two WLAN frequencies 2.4 and 5 GHz. Analogous to wired solutions, Safety-relevant data is sent via the Black Channel principle.

When multiple base stations and HMIs are used for complex, very large-scale machines and systems, the wireless roaming feature provides reliable and nearly unlimited coverage. The HGW panel is directly coupled with the selected machine and Safety control. The base station serves as the communications bridge between the wireless and cable-connected networks. Roaming means that an active connection exists over at least one of the two frequencies at all times.

By combining the interfaces of the base stations used, all network participants (HGW, machine/Safety control) are connected to one another over a single subnetwork.

SIGMATEK