System overview
3.8 Technology functions
Automation system
System Manual, 12/2017, A5E03461182-AE
81
Benefits
The technology modules for time-based IO offers you the following advantages:
●
Meets stringent requirements for precision and speed, independent of the CPU and
fieldbus
●
Signals are read in and output precisely, to within 1 microsecond
●
exact definition of response times, independent of the application cycle
●
typical use: cam control, length measurement, time measurement, as a probe, for dosing
fluid quantities
3.8.6
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
Manual
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
channels)
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
---
Hardware interrupt
X (configurable)
Summary of Contents for Simatic S7-1500/ET 200MP
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