PLCIO is a library designed to read and write data
on a programmable logic controller (PLC). It allows the programmer to address PLC memory by
their tag names for different data types,
regardless of the computer architecture, with the
PLC linked either directly or remotely. It
includes a sample CGI interface for PLC access
from a Web browser. It runs under Linux, HP-UX, Solaris, and QNX, and can be used as a replacement for the aging Interchange software by Allen-Bradley. PLCIO supports the Ethernet protocols of the Allen-Bradley PLC-5, SLC 500, ControlLogix, CompactLogix, and MicroLogix PLCs, the Modicon Quantum PLC, the Wago 750-842 PLC, and the Siemens Step 7 300- and 400-series CPUs. It also supports the Siemens Step 5 AS511 protocol either serially or via Ethernet using the INAT Echolink.
License: Other/Proprietary License
Changes:
This release adds support for Siemens Step 7 400-series CPUs. Also included are bugfixes for addressing timers and counters in the 'abeth' module.
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