Siemens SIWAREX WP231 Weighing Module for SIMATIC S7-1200 7MH4960-2AA01

The Siemens 7MH4960-2AA01 (SIWAREX WP231) is a compact, versatile weighing module designed for seamless integration with the SIMATIC S7-1200 automation system or for stand-alone operation without a central controller. As part of the Siemens SIWAREX family of process weighing electronics, this module performs high-accuracy gravimetric measurement and monitoring tasks across automated industrial processes. It is engineered primarily for non-automatic weighing instruments, including platform scales, vessel weighing systems, and level monitoring in hoppers, bins, and silos. The module directly connects strain-gauge load cells in four-wire or six-wire configurations, converting analog bridge voltages into high-resolution digital weight values. Equipped with onboard Ethernet and RS485 interfaces supporting Modbus TCP and Modbus RTU protocols, the 7MH4960-2AA01 enables flexible communication with operator panels, supervisory computers, and distributed control architectures. Digital inputs and outputs provide local control functionality such as zeroing, taring, and limit monitoring. Built for standard DIN rail mounting within industrial control cabinets, this weighing module ensures reliable performance, simplified commissioning through SIWATOOL engineering software, and dependable weight evaluation in manufacturing, chemical, and bulk material handling facilities.