PLC + HMI SCADA Architecture

UCOS delivers everything you expect in a centralized PLC + HMI SCADA architecture, but with much more flexibility.

Click any component in the architecture to learn more about it.

• The Engineering Workstation (EWS) is for project development, including configuration of graphics, logic, alarms, security, etc. Typically, the EWS is a PC running Windows 2000/XP.
  Top
• The Operator Workstation (OWS) provides the operator interface, including color graphics, faceplates, alarms, logging, trends, diagnostics, etc. The EWS includes an OWS for testing and troubleshooting. Typically, the OWS is a PC running Windows 2000/XP.
  Top
• The Field Control Unit (FCU) executes sequential and regulatory logic and directly scans I/O. Depending on the FCU's configuration, you can scan multiple brands of I/O from one unit. The FCU runs QNX, a real-time operating system, and is typically a PLC or a ruggedized industrial computer available in a variety of form factors.
  Top
• The I/O Subsystem supports I/O from all the standard industry suppliers. In a UCOS configuration, you don't necessarily need PLCs – just PLC I/O.
  Top
• The UCOS microFCU is a small PLC that executes sequential and regulatory logic and directly scans onboard I/O. It is a cost-effective alternative in situations where low cost, low power consumption, and/or low point counts are called for.
  Top
• The SCADA Data Server (SDS) interfaces UCOS to PLCs, Fieldbus technologies, RTUs, PLC I/O, and other third-party devices.
  
  The SDS can execute sequential and regulatory logic and directly scan supported I/O. It can also act as a data gateway allowing UCOS to work with just about any device you can think of.
  
  Typically, an SDS is a ruggedized industrial computer running Windows 2000/XP, although direct I/O scanning is run under QNX, the leading real-time operating system.
  Top
• The Process Historical Archiver (PHA) stores and retrieves historical data collected by the FCU, microFCU, SDS, or any other intelligent device in the system. The PHA can run standalone or can share an OWS workstation. Typically, the PHA is a PC running Windows 2000/XP.
  Top
• UCOS supports redundant and non-redundant fiber optic and Ethernet local networks using the TCP/IP networking protocol for standardized, advanced application connectivity.
  Top

Now let's take a look at sequencing in UCOS.

< Previous 1 2 3 Next >