Features:
- Two independent weighing channels connect full-bridge load cells for two platform or hopper scales.
- The module provides six digital inputs, eight digital outputs, one RS485 interface, and one RJ45 Ethernet port.
- SIMATIC S7-1500 backplane integration reserves 64-byte input and 64-byte output address areas.
The dual-channel design reduces cabinet space when two nearby weighing points require independent calibration and operation.
A 100 Hz sampling rate and ±1,000,000-parts-per-mV/V input signal resolution support stable weight acquisition for non-automatic scales.
STEP 7 TIA Portal V14 or higher supports engineering of the module on an S7-1500 mounting rail.
The Siemens 7MH4980-2AA01 TM SIWAREX WP522 ST Two-Channel Weighing Module is supported with product documentation and selection assistance from Apter Power.
Siemens 7MH4980-2AA01 Two-Channel Weighing Module Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Independent Scale Processing
- Dual architecture: Two full-bridge load-cell inputs process separate platform or hopper scale signals in one technology module.
- Wiring: Each full-bridge input supports 4- or 6-conductor load-cell connections.
- Measuring ranges: Selectable ranges are −1 to +1, −2 to +2, and −4 to +4 mV/V.
- Sampling: Both weighing channels operate at a 100 Hz sampling rate.
Scale Commands and Status Wiring
- Inputs: Six digital inputs are provided in total, with three assigned to each weighing channel.
- Outputs: Eight digital outputs are provided in total, with four assigned to each weighing channel.
- Output rating: Each digital output supports a maximum current of 0.5 A.
- Fault protection: Short-circuit protection limits the effect of a field-output wiring fault.
Controller and Service Access
- S7-1500 path: The backplane transfers weight values, commands, and status data through 64-byte input and output address areas.
- Ethernet: One RJ45 interface supports 10/100 Mbit/s network communication.
- Serial interface: One RS485 interface is provided for supported serial communication.
- Engineering: STEP 7 TIA Portal V14 or higher is specified for module configuration.
Scale Setup Boundaries
- Load-cell check: Confirm bridge sensitivity, wiring polarity, excitation, and total cell loading before calibration.
- Zero calibration: Establish the unloaded reference after the mechanical scale is stable and free of binding.
- Span calibration: Use a known reference load or the documented theoretical method for the connected scale.
- Channel proof: Test inputs, outputs, weight direction, and fault reactions independently on both channels.