Soft Logic: A Guide to Using a PC as a Programmable Logic Controller
Providing a practical overview of software-based logic control systems, this edition demonstrates how the personal computer, coupled with the right software and input/output hardware, may emerge as the next generation of programmable logic controller. It contains over 30 hands-on applications of soft-logic from HVAC systems to robotics machinery and includes a complete walk-through of an entire soft-logic system from design to implementation. The book also features a comprehensive chapter on communications schemes including a detailed discussion of DeviceNet.
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Traditional Control Schemes
AC Drives and Soft Logic
18 other sections not shown
AC drive actual allow analog application application software architecture automation basic cable capability chart circuit client communication components configuration control scheme DC motor electrical noise electronic drive elements encoder engineer environment feedback device flowchart function block Grafcet ground hardware industry installation integration interface ladder diagram ladder logic load loop machine or process manufacturing memory microprocessor modular monitor motion control OPC Server package PC-based control systems PC-based system performance PID loop pieces of equipment problem process control processor programmable logic controller pulses pump real-time operating system remote I/O SCADA seen in Fig sensor serial servo system servomotor shown in Fig signal soft logic control soft logic system specific speed standard supplier switch temperature tion torque transmission typical utilize variable-frequency drive VMEbus voltage Windows NT wiring