Use or Function Code 06 (Write Single Holding Register) . Toggle the "Grip" or "Go To" flag from 0 to 1 .
For OnRobot, the choice was strategic. Their tools already support multiple major robot brands (Universal Robots, Fanuc, Doosan, Mitsubishi, etc.) via their and One System Solution . But many advanced users don’t want to control a gripper only from the teach pendant. They want to trigger it from a vision system, a safety PLC, or a custom .NET application. onrobot modbus
In the world of modern automation, the "hand" of a robot—the end-effector—is often where the most critical work happens. , a leader in collaborative applications, has revolutionized this space by creating tools that aren't just physically adaptable, but digitally fluent . At the heart of this digital fluency is Modbus TCP , a veteran communication protocol that acts as the universal translator between OnRobot’s sophisticated hardware and the "brains" of industrial systems. The Universal Language of the Factory Floor Use or Function Code 06 (Write Single Holding Register)
An edge computer polls the OnRobot gripper every minute for Register 11 (Force) and Register 10 (Width). Over time, it detects that the gripper takes 50ms longer to reach the target force. This alerts maintenance to clean or replace the gripper jaws before a catastrophic failure. Their tools already support multiple major robot brands
You write to Register 20 (Target Width), but reading Register 10 (Current Width) never changes. Cause: You forgot to write the Control Word (Register 22). OnRobot devices require a specific activation bit to execute the command. Writing to target registers only stores the value; it does not move the fingers. Fix: Always sequence: Set Targets -> Set Control Word -> Monitor Status.
Modbus allows for "on-the-fly" adjustments. In a high-mix production line, a gripper might need to handle a delicate glass vial in one cycle and a heavy plastic housing in the next. Modbus TCP enables the controller to update force and speed parameters in milliseconds, ensuring the "digital handshake" is as precise as the physical one. Conclusion
High-speed assembly lines demand optimized industrial networks to prevent latency bottlenecks. Minimize Transaction Overhead