The VARAN Bus

The VARAN Bus, the Real-Time Ethernet Bus System LASAL Highlights at a Glance The VARAN Bus, the Real-Time Ethernet Bus System Hard real-time Cycle times < 100 µs and jitter < 100 ns High data security For use in harsh industrial environments Short packet lengths up to a max. of 128 bytes Flexible network principle Line, star and tree structures can be combined as desired. Modular machine structures Low system costs Use of inexpensive standard components

Uses the Manager/Client Principle VARAN Function Principle Uses the Manager/Client Principle Guaranteed data consistency with reconfirmation of each message Distributed clocks are not required: synchronization with a PLL mechanism Cycle time < 100 µs

Various Tasks for Various Jobs VARAN Function Principle Various Tasks for Various Jobs Standard Ethernet packets are tunnelled Maximum protection against unauthorized access! No firewall needed! Asynchronous direct access during the bus cycle

VARAN Frame vs. Standard Ethernet Frame VARAN Function Principle VARAN Frame vs. Standard Ethernet Frame

The VARAN Bus, Integrated Safety The VARAN Bus Speaks Safety The VARAN Bus, Integrated Safety Black channel principle Decentralized Safety solutions SIL-3, IEEE 61508, PL e

The VARAN Bus is Simple Automatic addressing Simple function VARAN Function Principle The VARAN Bus is Simple Automatic addressing Simple function Simple instruction sets Data exchange over a common address range Up to 65,280 participants

Components of a VARAN Connection VARAN Function Principle Components of a VARAN Connection VARAN protocol executed completely in the hardware Inexpensive standard components are used

Electronic type label Unique identification for each participant VARAN Function Principle Electronic type label Unique identification for each participant

The VARAN Bus: Access Times Performance Characteristics The VARAN Bus: Access Times Bus cycle times < 100 µs Isochronous access time 2.18 µs 8 I/Os = 1 byte 5.05 µs 1 drive 16 bytes r/w Asynchronous direct access < 25 µs 128 bytes Synchronicity-inaccuracy < 100 ns jitter Portable to Gigabit Ethernet without protocol changes

Communication during an error Data Security High Data Security Industrial environment affected by disruptions When data is lost: Data is resent in the same bus cycle Communication during an error

Flexible Network Principle Function principle Flexible Network Principle Hot-Plug capability Automatic addressing Electronic type label Only 1 IP address per machine

Synchronous Multi-Manager Systems Function Principle Synchronous Multi-Manager Systems Modular configuration of production lines

VNO, Strong Together VARAN BUS USER ORGANIZATION e.V. Founded in 2006, registered organization, independent The VNO holds the rights to the open VARAN bus technology Control-independent Unlimited VARAN technology user rights for members Defined connection technology Cooperation with organizations such as VDMA. CiA CANopen® mapping in VARAN Consultation, maintenance and development of the standard

The VARAN bus, the Real-Time Ethernet Bus System What is the VARAN Bus The VARAN bus, the Real-Time Ethernet Bus System

The VARAN Bus, the Optimal Connection VARAN bus Connection Technology The VARAN Bus, the Optimal Connection Industrial RJ45 (IP 20) connector Signal and power supply with hybrid cable M12 connector plug (IP67) up to 2 A 8+4 power / Ethernet connection technology (IP67) up to 10 A

From the Smallest Sensor to the World Wide Web Topology Examples From the Smallest Sensor to the World Wide Web Internet Office / control level Field level Injection molding machine Handling Injection molding machine Handling

Modular Machine Construction with Central Controls Topology Examples Modular Machine Construction with Central Controls Central control Control computer Service PC Switch TCP / IP TCP / IP VARAN Injection moulding machine Conveyor system Robot

VARAN Bus in the Machine Temperature control unit Topology Examples VARAN Bus in the Machine TCP / IP DVI Length measuring systems TCP / IP VARAN VARAN Multi Manager Hydraulics TCP / IP VARAN Drives Temperature control unit Sensors I/O Modules Service Laptop

Package Sorting System TNT Distribution Centre Application Example Package Sorting System TNT Distribution Centre Developed by VAN-RIET, Dutch specialist for material handling systems Production increase of 80% compared to the current field bus solution 9,000 packages sorted per hour Minimum runtime: under 1 ms Update time < 200 µs Maximum scan rate with 128 VARAN digital mixed modules => corresponds to a maximum of 1024 I/Os networked with the VARAN bus

TNT Distribution Centre Package Sorting System Application Example TNT Distribution Centre Package Sorting System Schematic diagram Light barrier Spring or air actuator (Max. 128 VDM)

TNT Distribution Centre Package Sorting System Application example TNT Distribution Centre Package Sorting System

With the VARAN bus you increase performance and data security