H.M.S. Communications, Inc.
Supervisory Control And Data Acquisition
SCADA is a combination telemetry and data acquisition system. The system is composed of collecting information, transferring it back to a central control site or main station computer, conducting the necessary analysis and control, and then displaying the data on an operator screen. A SCADA system is primarily used to monitor and control a plant, pipeline or equipment. It is extremely useful for remote or hazardous locations. Control functions may be manual, automatic or can be initiated by operator commands.
SCADA Main Components
SCADA Telemetry is the technique or method of data transmission. It involves the selected medium of communications, either wireline, radio or satellite technology or a combination of communication technologies, depending on the specific requirements of the SCADA application. In the system design a method is established to enable the system to address individual or multiple sites within the system
SCADA data acquisition involves the method that is used to access, manipulate and control data (information) from the SCADA equipment in the system network. The acquired data is then transferred to the telemetry system for transfer to the various sites in the system. The data can be in either analog or digital format. The data is primarily gathered through sensors such as ammeter, flowmeters, pressure, temperature and vacuum meters. The data can also be in the form of control commands to various equipment within the system. These controls can be actuators, valves, motors, relays, switches, and other control hardware within the system.
Contact H.M.S. Communications for all your SCADA communication requirements. H.M.S. Communications can provide a cost effective communication solution to incorporate in your SCADA network system through its global wide network access.
Send mail to
with questions or comments about this web site.