Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6GT2001-0AA00 |
| RFID Family | MOBY I |
| Device Type | SLG 41 write/read device |
| Supply Voltage | 24 V DC |
| Communication Rate | 19,200 baud |
| Protection Rating | IP65 |
| Operating Temperature | -25 to +70 °C |
| Dimensions | 120 × 40 × 40 mm |
| Maximum Limit Distance | 25 mm, depending on MDS |
| Weight | Approx. 0.21–0.24 kg |
| Lifecycle | Discontinued / obsolete |
The core mechanical, environmental, and RFID specifications above are documented in the Siemens-origin data sheet reproduced by automation-equipment suppliers.
Important identification note: Do not confuse 6GT2001-0AA00 with the related 6GT2001-0AA00-0AX0, which is an SLG 41S variant with a 90-degree rotatable antenna arrangement. The base 6GT2001-0AA00 is the standard SLG 41 configuration.
Product Introduction
The Siemens 6GT2001-0AA00 is an SLG 41 MOBY I RFID write/read device designed for contactless data exchange with compatible Siemens MOBY I mobile data storage units. It operates from 24 V DC, provides IP65 protection, and supports a maximum limit distance of 25 mm depending on the selected MDS.
This is a legacy RFID component rather than a current-generation Siemens RFID product. Its value today is primarily in maintaining existing MOBY I installations where replacing the complete RFID architecture would introduce unnecessary machine downtime, software changes, and integration work. Siemens documentation identifies the part as discontinued, so exact part-number matching is important when sourcing a replacement.

6GT2001-0AA00

6GT2001-0AA00
Installation & Configuration Guide
Stage 1 — Pre-Installation Preparation (~5–10 min)
- Apply lockout/tagout (LOTO) to the machine or equipment containing the RFID reader.
- Confirm that the replacement label reads 6GT2001-0AA00. Do not substitute the visually similar SLG 41S variant without checking the system documentation.
- Prepare an ESD wrist strap, PH1 screwdriver, multimeter, wiring labels, and a smartphone or camera for documenting the existing installation.
- Record the existing wiring, connector assignment, mounting position, and cable routing before removal.
- Verify the existing MOBY I architecture, including the reader interface, connected MDS type, and controller-side communication arrangement.
- Measure the supply before installation. The documented supply requirement is 24 V DC.
⚠️ Do not assume that a generic RFID reader is a direct substitute. The 6GT2001-0AA00 belongs to the legacy MOBY I system, so reader/MDS compatibility must be established at the system level.
Stage 2 — Removing the Existing Device (~5 min)
- Isolate the 24 V DC supply.
- Photograph the existing installation from several angles.
- Label every cable before disconnecting it.
- Disconnect the reader wiring without pulling on conductors.
- Remove the mechanical fasteners or mounting hardware.
- Withdraw the old SLG 41 carefully.
- Inspect the mounting surface and cable insulation for mechanical damage.
- Retain the removed reader until commissioning of the replacement has been completed.
Stage 3 — Installing the 6GT2001-0AA00 (~5–10 min)
- Verify the complete part number against the procurement record and machine documentation.
- Put on the ESD strap before handling the replacement device.
- Install the reader in the same orientation and sensing position as the original.
- Reconnect the wiring according to the documented installation.
- Check polarity and supply wiring before applying power.
- Secure all mounting hardware.
- Confirm that the RFID sensing face has the required clearance from surrounding metal structures.
- Verify that the actual MDS and reader geometry are consistent with the original application.
The specified maximum limit distance is 25 mm, but the actual usable distance depends on the MDS in use. Treat 25 mm as a device specification, not as a guaranteed distance for every RFID tag or installation geometry.
Stage 4 — Power-On & Testing (~10–15 min)
- With power still isolated, use a multimeter to verify the expected supply wiring.
- Apply 24 V DC.
- Check the reader’s operating indication and controller-side communication.
- Present a known-good MOBY I MDS at the established operating position.
- Verify both read and write operations, not just reader power-up.
- Confirm that the PLC or host system receives the expected RFID data.
- Repeat the test at the minimum practical operating distance and normal production position.
- Run several consecutive read/write cycles to detect intermittent communication or positioning problems.
- Record the final reader position and any configuration changes.
⚠️ If the reader powers up but the PLC does not receive valid RFID data, do not immediately replace the reader again. Check the controller interface, wiring, MDS compatibility, communication parameters, and physical read distance first.
Technical Pitfall & Survival Guide
1. MDS compatibility is the first checkpoint.
A functioning SLG 41 cannot compensate for an incompatible mobile data storage unit.
2. The 25 mm figure is application-dependent.
The published limit distance depends on the MDS. Mechanical brackets, metal surrounding the antenna, reader orientation, and actual MDS position can reduce the usable operating margin.
3. Do not confuse the standard SLG 41 with SLG 41S.
The 6GT2001-0AA00-0AX0 variant has a different mechanical antenna arrangement. Verify the full ordering number before installing it as a substitute.
4. Legacy status changes the procurement risk.
Siemens documentation identifies 6GT2001-0AA00 as discontinued. Secondary-market availability may include factory-sealed surplus, used, or refurbished units, and those conditions should not be treated as equivalent.
5. Preserve the old reader until the replacement passes a production-equivalent test.
With legacy RFID equipment, the removed unit can provide valuable evidence when diagnosing an MDS, wiring, controller-interface, or mechanical-positioning problem.
Frequently Asked Questions (FAQ)
Q1. What is Siemens 6GT2001-0AA00?
The 6GT2001-0AA00 is a Siemens MOBY I SLG 41 RFID write/read device used for contactless data exchange with compatible MOBY I mobile data storage units.
Q2. Is the 6GT2001-0AA00 still manufactured by Siemens?
No. Siemens-origin documentation identifies the product as having reached the end of its life cycle and being discontinued. A Siemens lifecycle record also lists product cancellation effective October 1, 2011.
Q3. What is the operating temperature range?
The documented operating range is -25 to +70 °C. The specified enclosure protection is IP65.
Q4. What is the maximum RFID read/write distance?
The published maximum limit distance is 25 mm, depending on the MDS. Actual machine performance must therefore be verified with the specific MDS and mechanical installation.
Q5. Is 6GT2001-0AA00 the same as 6GT2001-0AA00-0AX0?
No. The two part numbers belong to the MOBY I SLG 41 family, but the -0AX0 version is identified as SLG 41S and has a 90-degree rotatable antenna arrangement. Do not substitute between them without checking the original machine design.
Q6. Can I buy a new-original 6GT2001-0AA00?
Because Siemens has discontinued the product, current market inventory is primarily legacy, surplus, or refurbished stock rather than normal factory-new production. Some secondary suppliers currently list unused or factory-sealed examples, but condition and warranty are supplier-specific.
Q7. What should procurement verify before ordering?
Confirm the complete 6GT2001-0AA00 ordering number, MOBY I system compatibility, physical SLG 41 configuration, required MDS, operating environment, and seller-stated condition. For a critical production line, request serial/label photographs and documented functional testing before accepting a refurbished or surplus unit.

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