Siemens SIWAREX WP231 is a versatile, legal for trade weighing module for all simple weighing and force measuring tasks. The compact module is easy to install in the SIMATIC S7‑1200 automation system. It can also be operated without a SIMATIC CPU.
SIWAREX WP231 is a compact technology module in the SIMATIC S7-1200 and can be connected directly via the system bus with S7-1200 components. The rail mounting of the 70 mm (2.76 inch) wide weighing module means that it is extremely easy to mount/wire. The power supply, load cells, the RS 485, digital input/outputs and the analog output are connected via the screw connector of the weighing module. An RJ45 plug is used for the Ethernet connection.
SIWAREX WP231 is the optimum solution wherever load cells are used for measuring tasks. The following are typical SIWAREX WP231 applications:
• Non-automatic weighing instruments, also legal for trade
• Fill level monitoring of silos and bunkers
• Measuring of crane and cable loads
• Load measuring for industrial lifts and rolling mills
• Scales in zone 2 hazardous areas
• Force measuring, hopper scales, platform scales and crane scales
Benefits
- Uniform design technology and consistent communication in SIMATIC S7‑1200
- Uniform configuration with TIA Portal
- Legal-for-trade according to OIML R-76
- Operation without SIMATIC CPU possible
- Direct connection of an operator panel via Ethernet
- Direct connection of a remote display via RS 485 interface
- Modbus TCP/IP interface
- Modbus RTU interface
- Four digital inputs and outputs, one analog output
- Measurement of weight or force with a high resolution of up to ±4 million parts and an accuracy of 0.05%
- Simple adjustment of scale using the SIWATOOL V7 program via the Ethernet interface
- Recovery point for simple restoration of all parameters
- Automatic calibration is possible without the need for calibration weights
- Supports replacement of module without recalibration of scales
- Use in hazardous area zone 2
- Connection of digital force compensation load cells from WIPOTEC and Mettler-Toledo (type WM and PBK)
