1.1 Introduction
This manual describes the S7Drv driver for data exchange between the REX Control System and Siemens PLCs and operator panels.1 The driver uses the same communication protocol as the STEP7 development environment. Only Ethernet communication is supported.
The S7Drv driver relies on the Snap7 communication suite [1].
The REX Control System can act as Client (emulation of PG – STEP7) or Server (emulation of Siemens PLC).
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