SP32 Series Programmable Logic Controllers

Weatherford offers the SP32 series of programmable logic controllers (PLCs). The PLCs are more powerful than 16-bit controllers and offer high performance, built-in Ethernet, 8 Mb of SDRAM and a wide range of analog and digital input/output (I/O) options. The products offer Modbus® remote terminal unit (RTU), Modbus ASCII and DNP 3 native protocols and are remotely programmable through a choice of flexible programming languages. The controllers are based on multiprocessor architecture with a coprocessor used for handling on‑board input/output channels.

Overview

Compact and Powerful–the SP32 series of PLCs provide RTU functionality with flexible programming options. The units are programmable in relay ladder logic, IEC 61131-3 and multitasking C/C++ languages and provide an unlimited number of proportional integral-derivative (PID) controllers for use in feedback control applications. The products provide an integrated power supply, four digital/counter inputs and a status output. They also offer a flexible set of on-board mixed process I/Os and are externally expandable to accept up to forty I/O modules.

Flexible Communications–the controllers provide three RS-232 and one RS-232/485 serial communication ports running both Modbus RTU and Modbus ASCII communication protocols and DNP 3. For applications using an Ethernet LAN or WAN, a fully integrated Ethernet port is also included. For those challenging remote applications a fully integrated, license-free spread spectrum wireless module is available at 900 MHz and 2.4 GHz. The PLCs also support external radios and modems using Hayes AT commands, and can be programmed using powerful C/C++ tools for application specific protocols.