Digital Module Device Manuals - Siemens SIMATIC ET 200SP Product Information

2.5.1

Digital module device manuals

Manuals for I/O modules ST, BA
When you have disabled all channels of the I/O module, a diagnostic message is still
generated in the case of a fault if the "No supply voltage L+" diagnostics is enabled. For the
following I/O modules, this behavior is corrected as of firmware version > V1.1.0:
• DI 16x24VDC ST
• DI 8x24VDC ST
• DQ 16x24VDC/0.5A ST
• DQ 8x24VDC/0.5 A ST
• DQ 4x24VDC/0.5A ST
Manuals for digital input modules with wire break detection
When wire break detection is configured the module requires a low quiescent current at the
digital input in case of "0" signal for the monitoring. The parallel connection of a resistor with
25 kΩ to 45 kΩ is required in order that this quiescent current can flow when encoder
contacts are open.
If wire-break detection is disabled in the configuration, no parallel connection of the resistor
is required.
If wire-break detection is configured, connect a resistor with 25 kΩ to 45 kΩ parallel to each
mechanical encoder contact.
Figure 2-1
Manuals DI 4x120...230VAC ST, Edition 02/2014; DQ 4x24...230VAC/2A ST, Edition 02/2014
Section 4.3 Address space
If you have enabled value status, the module returns value status 1, regardless of the state of
the connected supply voltage.
Manual DI 8x24VDC HF, Edition 02/2014
Section 6.1 Technical specifications
• 24 V encoder supply
– Output current, max.: 700 mA, total current
Product information on the documentation of the ET 200SP distributed I/O system
Product Information, 02/2021, A5E03799595-BG
Connect mechanical encoder contact with resistor
Supplements to ET 200SP documentation
2.5 I/O module manuals
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