Weighing module SIWAREX FTA

SIWAREX FTA is a calibratable and versatile weighing electronics for SIMATIC S7, C7 and PCS7. The SIWAREX FTA function module is integrated in SIMATIC S7/PCS7, and uses the features of this modern automation system, such as integral communication, diagnostics and configuration tools. By setting a parameter in SIWAREX FTA, an individual scale type can be activated.

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  • Uniform structure and universal communication through the integration in the SIMATIC S7 and SIMATIC PCS 7
  • Application in the decentralized system concept by connecting to PROFIBUS DP / PROFINET through ET 200M
  • Weight or force measurement to resolutions of 16 million parts
  • Precision of 3 x 6000 d, calibratable
  • Fast dosing with fast communication
  • Calibratable display with SIMATIC HMI Standard Operator Panels
  • Stepless or incremental dosage control
  • Exact dosage switching signals (< 1 msec)
  • Definable input and output parameters
  • Definable parameters for the most diverse of applications
  • Flexible adjustment for different requirements
  • Simple parameter definition with the SIWATOOL FTA program
  • Theoretical adjustment without adjustment weights
  • Modules can be exchanged without readjusting the scale
  • Scale progress recording/logging
  • Calibratable Alibi memory
  • Can be used for Ex-applications


 Integration in automation system S7-400, PCS7, S7-300, C7, IM151-7 CPU
Via ET 200M, Direct integration in 
Communication interfaces
SIMATIC S7 (P-Bus), RS485, RS 
 232, TTY
EU type approval as non-automatic weighing  machine, trade class III
3 x 6000 d, ≥ 0,5 µV/e
Internal resolution
16 million parts
Internal/external updating rate
400/100 Hz
ATEX 95, FM, CULUS Haz.Loc. legal for trade acc. to OIML R76,
OIML, R51, R61, R107

Typical applications:

NAWI (Non Automatic Weighing Instrument) conforming with OIML R76  (Hopper weighing, Fill level scale, Platform scale, Crane scale)


AWI (Automatic Weighing Instrument) conforming with OIML R61 (Sacking system scale, Filling scale)


Automatic Catchweighing Instrument conforming with OIML R51 (Single component scale for filling and emptying scales, Multi-component scale, Static control scale for weight measurement)


Discontinue Totalizing Automatic Weighing Instrument conforming with OIML R107, (Emptying scale, Loading scale)

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