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6DD1681-0AE2

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Siemens 6DD1681-0AE2 is an SB10 interface module for SIMATIC TDC and FM 458-1DP systems. It supports direct 24 V DC digital I/O wiring between the controller and field terminals.
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Technical specifications for 6DD1681-0AE2

  • Manufacturer:
    Siemens
  • Part Number:
    6DD1681-0AE2
  • Product Family:
    SIMATIC TDC
  • Product Type:
    SIMATIC TDC SB10 interface module
  • Stock:
    1
  • Digital Signal Lines:
    8 x 24 V DC digital signals
  • Module Designation:
    SB10
  • Signal and Supply Level:
    24 V DC
  • Signal Wiring:
    Direct 1:1 wiring
  • Signal Conversion:
    No signal conversion
  • Electrical Isolation:
    No galvanic isolation
  • Controller-side Cable:
    SC62 or SC66
  • Rail Mounting:
    Snap-on DIN rail housing
  • Field-side Termination:
    Screw terminals
  • System-side Supply Terminal:
    X3
  • Maximum Terminal Wire Size:
    2.5 mm²
  • Controller-side Connector:
    X1 flat-cable connector
  • Signal and Supply Pins:
    8 signal pins plus 1P and 1M
  • Terminal Arrangement:
    X2, two 8-pole terminal groups
  • Diagnostic Test Socket:
    X5, 1P(+) and 1M(G)
  • Diagnostic Indication:
    LED indicators
  • Controller Platform:
    SIMATIC TDC / FM 458-1DP
  • Weight:
    0.5291 lbs (0.24 kg)
  • Estimated shipping dimensions:
    4.5 x 15.5 x 13 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Compatibility Installation & Integration Safety & Compliance

Features:

  • Eight digital inputs and eight digital outputs use the documented 24 V DC signal interface.
  • The SB10 provides direct 1:1 wiring without signal conversion.
  • LED indicators support local diagnostic checks.
The SB10 is the direct-wiring interface for SIMATIC TDC and FM 458-1DP applications, connecting controller signals to plant terminals.

It carries digital signals between the system side and field wiring through the documented cable and terminal arrangement; channel assignments follow the project design.

Confirm signal direction, common reference, cable selection, terminal grouping and isolation requirements before commissioning or replacement.

Availability is subject to Apter Power inventory and sourcing confirmation.
Verified resources for Siemens 6DD1681-0AE2: 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.
  • Use the SB10 as a direct-wiring interface between SIMATIC TDC or FM 458-1DP components and plant-side binary I/O.
  • Support configured controller-to-field output and field-to-controller input circuits within the automation system.
  • Select it when the cabinet design calls for direct 24 V DC signal wiring without conversion or isolation.
  • The SB10 is specified for SIMATIC TDC and FM 458-1DP components; verify the exact controller-side interface in the project documentation.
  • Siemens documents SC62 and SC66 cable options for SB10 connections, with selection depending on the connected system component.
  • Its direct 1:1 wiring has no signal conversion or electrical isolation, so it is not a substitute for interfaces requiring those functions.
  • The housing is designed to snap onto a mounting rail within the control cabinet.
  • Connect the controller through the X1 flat-cable interface and terminate field wiring at the X2 terminal groups.
  • Feed the SIMATIC-side supply at X3 and keep its terminal conductor cross-section within the documented 2.5 mm² maximum.
  • The Siemens EU Declaration of Conformity lists ATEX, EMC and RoHS directives for this article number.
  • The associated UK declaration lists UK-ATEX, UK-EMC and UK-RoHS requirements.
  • The interface is not galvanically isolated; verify the common-reference and site wiring design before service work.
Description
6DD1681-0AE2 is Siemens SB10 interface module for SIMATIC TDC and FM 458-1DP systems. It carries digital signals between the controller side and plant wiring through a direct 1:1 interface.

The module supports eight digital inputs and eight digital outputs at 24 V DC. Controller-side connection uses the documented SC62 or SC66 cable options, while field wiring terminates at the module terminals.

The interface does not provide galvanic isolation or signal conversion. Before replacing it, verify the system variant, signal direction, common reference, cable assignment and terminal layout against the Siemens hardware documentation.
Alternative Names
6DD1681-0AE2 6DD 1681 0AE2 6DD16810AE2 Siemens 6DD1681-0AE2 Siemens SB10 Siemens SIMATIC TDC SB10 interface module SIMATIC TDC SB10 6DD1681-0AE2
Technical notes
For 6DD1681-0AE2, verify the shared electrical reference and field wiring: this 1:1 interface provides no galvanic isolation or signal conversion.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Does 6DD1681-0AE2 isolate or convert digital signals?
No. Siemens describes the SB10 as direct 1:1 wiring with no signal conversion; the system and plant sides are not electrically isolated.
How does 6DD1681-0AE2 connect to the controller and field wiring?
The controller side uses the documented flat-cable interface, while the plant side connects through the module terminal groups.
Which Siemens cable options are documented for 6DD1681-0AE2?
Siemens documents SC62 and SC66 cable options for SB10 connections; confirm the correct cable against the installed controller and wiring plan.
What should be checked before replacing 6DD1681-0AE2?
Confirm the full article number, system type, signal direction, shared reference, cable assignment and terminal layout against the site documentation.
Do Siemens documents still identify 6DD1681-0AE2?
Yes. Siemens technical documents continue to identify the SB10 article number; the documents do not guarantee current OEM inventory. Apter Power can check sourcing options.
Where can I find 6DD1681-0AE2 wiring details and request a quote?
Use the Siemens SIMATIC TDC hardware manual for SB10 connection details. For a quote, share the module label, quantity, controller type and installed cable information.

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