A spasm in the feet or toe is called a carpopedal spasm. Carpopedal spasms are usually accompanied by numbness, tingling, or a âpins-and-needlesâ feeling. Muscle weakness, fatigue, cramping, twitching, and uncontrolled, purposeless, rapid movement are not an uncommon occurrence with carpopedal spasms either. Some common causes of spasms are: 1  Hypocalcemia (calcium deficiency) 2  Vitamin D deficiency. 3  Muscle cramps (Most often caused by sports or occupational muscle injury)
A remote terminal unit is a microprocessor-controlled electronic device that interfaces objects in the physical world to a distributed control system or SCADA system by transmitting telemetry data to a master system, and by using messages from the master supervisory system to control connected objects. Other terms that may be used for RTU is remote telemetry unit or remote telecontrol unit.
1. SCADA Master Station Computer Systems: It is the repository of the real-time or near real-time reported data collected from the remote terminal units connected to it. It is generally standard computer hardware equipment and very few SCADA system suppliers have ventured out to make their own computer equipment.