7MH4138-6AA00-0BA0 SIWAREX WP321 WEIGHING ELECTRONIC (1 CHANNEL) FOR STRAIN GAUGE LOAD CELLS / FULL BRIDGES (1-4 mV/V) FOR SIMATIC ET200SP, FITS to BU-TYPE A0, RS485- INTERFACE FOR CONNECTION OF SIWATOOL OR A REMOTE DISPLAY Detailed load cell diagnostics