Siemens 6ES7138-4DB03-0AB0 ET 200S 1 SSI Electronic Module
01Technical Summary
Siemens 6ES7138-4DB03-0AB0 is a 15 mm ET 200S electronic module for one SSI absolute encoder. It supports encoder values up to 25 bits and SSI clock rates up to 1 MHz, adds one digital input, and provides comparison/reference-value functions with isochronous operation. The module is intended for precise position acquisition in an ET 200S station, so its terminal module, interface module, SSI frame, encoder supply, cable and STEP 7 configuration must be checked as a complete signal chain.
02Specifications
| Manufacturer | Siemens |
|---|---|
| Article Number | 6ES7138-4DB03-0AB0 |
| Product Family | SIMATIC DP ET 200S |
| Module Type | Electronic module, 1 SSI |
| Encoder Interface | Synchronous Serial Interface |
| Encoder Resolution | Up to 25 bit |
| SSI Clock Rate | Up to 1 MHz |
| Digital Inputs | 1 |
| Comparison Function | Comparison/reference value supported |
| Isochronous Operation | Supported |
| Rated Load Supply | 24 V DC |
| Permissible Load Supply | 20.4-28.8 V DC |
| Encoder Supply | 24 V, maximum 500 mA |
| Maximum Shielded Cable Length | 50 m |
| Module Width | 15 mm |
| Approximate Power Dissipation | 1 W |
| Lifecycle | Spare part; product cancellation |
03Features
Key Functions
- Acquires one SSI absolute-position value with a frame length of up to 25 bits.
- Supports SSI clock frequencies up to 1 MHz within the permitted cable and encoder conditions.
- Provides one integrated digital input for a related process or reference signal.
- Comparison/reference-value functions can be used for fast position-dependent evaluation.
- Isochronous operation supports deterministic acquisition in a suitably configured ET 200S station.
- The integrated 24 V encoder supply is short-circuit protected and rated up to 500 mA.
Identification
- Manufacturer: Siemens
- Model: 6ES7138-4DB03-0AB0
- Product Type: SIMATIC DP ET 200S electronic module for one SSI absolute encoder
- Status: Spare part / cancelled product
04Compatibility
- Confirm an ET 200S station and interface module that support this electronic module and isochronous operation.
- Match the terminal module, 15 mm mechanical position, power group and 24 V load-supply arrangement.
- Verify SSI coding, frame length, clock rate, parity or status-bit handling, direction, scaling and encoder supply current.
- Use shielded encoder cable and remain within the documented 50 m maximum while observing the installation rules.
- Update the STEP 7 hardware configuration and parameterization for the exact 6ES7138-4DB03-0AB0 article.
- Do not copy parameters from another SSI module without checking data format, diagnostics and comparison functions.
05Replacement
- This article is identified as a spare part and a cancelled product; confirm current Siemens service availability before ordering.
- Record the existing terminal module, station interface, power group, SSI parameter set and comparison/reference values.
- Back up the complete STEP 7 hardware and application project before removal.
- A move to another ET 200 family or SSI module requires engineered migration of wiring, hardware configuration and data handling.
- After replacement, verify encoder direction, absolute value, scaling, digital input, comparison events, diagnostics and isochronous timing.
06FAQ
What is Siemens 6ES7138-4DB03-0AB0?
It is a 15 mm ET 200S electronic module for one SSI absolute encoder.
What encoder resolution is supported?
The official product data specifies SSI absolute values up to 25 bits.
What is the maximum SSI clock rate?
The module supports an SSI clock rate up to 1 MHz under the documented installation conditions.
Does the module include a digital input?
Yes. It includes one digital input in addition to the SSI channel.
Is the module still a current standard product?
It is identified as a spare part and product-cancellation item, so availability should be confirmed for each order.
What must be tested after exchange?
Verify the absolute position, coding, direction, scaling, digital input, comparison functions, diagnostics and isochronous behavior.
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