This paper presents an experimental adaptation of a non-collaborative robot arm to collaborate with the environment, as one step towards adapting legacy robotic machinery to fit in industry 4.0 requirements. A cloud-based internet of things (CIoT) service is employed to connect, supervise and control a robotic arm's motion using the added wireless sensing devices to the environment. A programmable automation controller (PAC) unit, connected to the robot arm receives the most recent changes and updates the motion of the robot arm. The experimental results show that the proposed non-expensive service is tractable and adaptable to higher level for machine to machine collaboration. The proposed approach in this paper has industrial and educational applications. In the proposed approach, the CIoT technology is added as a technology interface between the sensors to the environment and the robotic arm. The proposed approach is versatile and fits to variety of applications to meet the flexible requirements of industry 4.0. The proposed approach has been implemented in an experiment using MECA 500 robot arm and AMAX 5580 programmable automation controller and ultrasonic proximity wireless sensor.