HMS Industrial Networks AB, Automating the impossible in any factory, in any country

Smart Flex Effector – Automate the impossible
David Lehmann, System Architect at Bosch Rexroth, explains what a compensation module is and what makes the Smart Flex Effector unique:

“When you think about a robot in the factory, you usually think of a six-axis robot assembling parts or building a car, or something like that. The robots have some kind of tool at the tip, like a gripper. The compensation module is the part that goes between the robot arm and the gripper. The Smart Flex Effector stands out due to its ability to provide compliance (flexibility in response to forces) in six degrees of freedom (movement in three-dimensional space).

We can measure the deflection (change in position) of the tool with high precision with an integrated sensor system. This allows us to perform complex tasks, such as precise assembly operations, that usually only humans can do. Our slogan, ‘Automate the impossible’, sums it up nicely. Our goal with this product is to enable robots to perform new tasks that they are traditionally not good at, thereby increasing efficiency and productivity.”

Connectivity challenges
To enable the robots to perform these new tasks, the Smart Flex Effector needs to exchange position measurement data with the robot controllers, including information about the deflection of the tool and control signals for the module's locked and unlocked states.

However, connecting the Smart Flex Effector to robot controllers was challenging, as David explains. “Our product was available, but we had difficulties installing it at our customer’s sites. When we talked to our customers, the feedback was often the same: 'You have this serial interface, but I don't want to spend two weeks or more trying to connect it with my robot controller. I do not have the time or the resources to do that.'”

Simplifying connectivity with Anybus protocol converters
To solve these connectivity challenges, Bosch Rexroth turned to HMS Networks who provided the Anybus Communicator Common Ethernet, a ready-made protocol converter capable of connecting serial devices to EtherCAT, EtherNet/IP, Modbus TCP or PROFINET controllers.

A key benefit of the Anybus Communicator Common Ethernet was that the same unit can connect to all the major Ethernet protocols, as David describes “This Anybus protocol converter was the ideal solution for us because we can reconfigure it with a firmware update and with just one unit, we are able to provide the connection to the different protocols.”

The Anybus Communicator’s intuitive user interface also won some new fans. “The interface is really nice. Before selling it to our customers, we tested it for ourselves in our lab where application engineers completed feasibility studies, for example. They all said that it was easy and straightforward to complete the required configurations via the web interface, which was important to us as we have customers that are not experts in automation and robotics.”