SCADA and process control applications
CMC’s intelligent data acquisition and control systems are the sharpest private eye in information technology. They keep an unceasing watch on both digital and analog parameters in the most exacting industrial environments.

The RTUs are ruggedised, industry standard X-86 architecture-based systems and are ideal front-ends for a whole range of industrial process control environments.

The units continuously monitor both analog and digital process data. Information on various parameters like temperature, voltage, pressure etc., as well as particulars of event change information on circuit breakers and isolators is monitored and controlled from a SCADA host. RTUs also receive and process control commands from the host and execute them accordingly. They can provide interface to devices like trivectormeters, numerical relays and other such devices in multi-dropped mode, log their data and pass it on to the host through the protocol used.

CMC’s RTU range

	68K processor based RTU (9035-55 floor mounted, 256 I/O)
	68K processor based RTU (9035-57 floor mounted, 96 I/O)
	Building management system RTU (9035-35)
	PC/104 based distribution automation RTU (DARTU) 9035-66
	PC/104 based demand side management RTU (DSM/RTU)9035-68
	PC/104 based miniaturised RTU (MRTU) 9035-64, 9035-65
	PC/104 based spectrum RTU (SRTU) 9035-71
	Vital signs monitoring unit (VSMU) 9057-40

Features
Rugged design
Specially designed to work in harsh industrial environments, the RTUs can withstand high temperatures. The latest CMOS circuitry gives the units high noise immunity and keeps power consumption low. These features ensure reliable performance in the most demanding conditions. These RTUs are pole / floor mountable and suitable for installation in enclosed, harsh environments. They are designed to withstand IEC 801 specifications for I/O modules, EMI/EMC and IP/NEMA rating for enclosures.

CMC’s monitoring and control solutions
Modular construction
The architecture for RTUs is modular and consists of two basic components: the processor module and the input/output module. Both analog and digital parameters are supported as I/O points by the units. The modular design, combined with the ease of programming allows users to upgrade the system from a small configuration to the maximum limit, simply by adding suitable input/output modules.

Communication
Two communication ports are provided as default (one RS-232, second RS232/RS485 selectable). Communication modules can be added on as required and in multiples of four ports which are selectable as either RS232 or RS485 standards. The RTUs support various telemetry protocols such as Modbus RTU, Modbus ASCII, TC57, IEC870-5, IEC 870 5-1, IEC 870-5-101, DNP 3.0 etc. They can be interfaced to the GPS receiver for accurate time and position information, with cell phone, VSAT with normal or radio modem, fibre optics, etc. Any other communication standard can also be easily provided.

Other special features
CMC’s RTUs can provide direct interfaces to SVGA monitor or flat panel (LCD based) for output and conventional keyboard as input device. This provides the advantage of local display in SCADA applications thus eliminating the necessity of a separate local MMI unit. A mouse-driven Windows kind of user interface can also be provided.

Applications
RTUs serve as efficient front-ends for SCADA applications in a variety of industries. Whether in a coal/steel plant, a power substation, a mine or along a railway track, or an oil pipeline, the rugged and versatile RTUs can be easily installed and maintained and adapted to the most diverse and demanding physical environments.

System architecture

Contact
Head - Embedded systems
CMC Centre
Old Mumbai Highway
Gachibowli,
Hyderabad - 500 032
Tel: 91-40-23000401 / 501
Fax:91-40- 23000509
Email: embedded@cmcltd.com