Siemens Simatic S7-1500 / ET 200MP - Technology Module for Weighing Technology

System overview
4.8 Technology functions
Automation system
System Manual, 01/2023, A5E03461182-AK
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4.8.6 Technology module for weighing technology
The technology modules SIWAREX WP521 and SIWAREX WP522 are used for the acquisition
and processing of signals from weighing or force transducers. You can connect one scale
(WP521) or two separate scales (WP522) respectively to the modules. The SIWAREX modules
offer high accuracy.
The table below shows the main features of the technology modules for weighing
technology.
Short designation TM electronic weighing system
SIWAREX WP 521 ST
TM electronic weighing system
SIWAREX WP 522 ST
Article number
7MH4 980-1AA01
7MH4 980-2AA01
Manual
Link
Weighing channel
1 channel
2 channels
Interfaces
RS 485 with Modbus RTU or for connecting the remote display (per channel)
Ethernet interface with SIWATOOL protocol and Modbus TCP/IP (1 for both chan-
nels)
Integrated digital inputs
DI 3x24VDC
Integrated digital outputs
DQ 4x24VDC
Load cell connection
DMS load cells in 6- or 4-wire technology (per channel), 1 to 4 mV/V
Functions
• Adjust the scale with weights or automatically
• 3 limits
• Tare
• Set to zero
• Trace
• Commission with SIWATOOL (service tool for PC)
Diagnostic interrupt
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Hardware interrupt
X (configurable)
Benefits
The weighing modules SIWAREX for SIMATIC S7-1500 offer you the following advantages:
• Seamless integration of simple weighing applications such as platform and hopper scales
in SIMATIC S7-1500
• Use for level monitoring, e.g. silos and bunkers
• Can be used centrally in SIMATIC S7-1500 and in ET 200MP distributed I/O system
• SIWAREX WP521 ST for the setup of one scale
• SIWAREX WP522 ST for the setup of two separate scales, with the same space
requirements as WP521 ST
• Free sample application on the Internet for the quick implementation of customer or
industry-specific solutions