Siemens 6GT2002-0AA00 Replacement for MOBY-I Series

Product Overview

Siemens 6GT2002-0AA00 Replacement for MOBY-I Series: Seamless Transition & Legacy System Upgrade

The Siemens 6GT2002-0AA00 is the RFID Basic Module at the heart of the MOBY-I identification system — a platform widely deployed across automotive assembly lines, logistics conveyors, and discrete manufacturing cells throughout the 1990s and 2000s. As Siemens progressively phases out MOBY-I hardware in favour of the RF200 and RF300 series under the SIMATIC RF product family, procurement teams and maintenance engineers face a critical decision: source a verified replacement 6GT2002-0AA00 to maintain continuity, or plan a structured migration to a current-generation RFID architecture.

TOPNLMS stocks the 6GT2002-0AA00 as a direct drop-in replacement for failed or end-of-life units. Every module is sourced from authorised distribution channels, inspected against Siemens factory specifications, and shipped with a 12-month warranty. Whether your priority is an emergency spare to restore production today or a planned retrofit over the next maintenance window, this page covers both paths in full technical detail.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful MOBY-I replacement or migration rarely involves a single component. In practice, the 6GT2002-0AA00 Basic Module operates as part of a tightly coupled subsystem. Understanding the surrounding hardware is essential for a smooth retrofit.

The most common scenario is a like-for-like swap: the failed 6GT2002-0AA00 is removed from the S7-300 rack or DIN rail enclosure, and the replacement unit is installed in the same slot. Because the module communicates with the PLC via the ASM 452 or ASM 454 interface module — both of which remain in service — no changes to the STEP 7 program or function block library are required. The SLG read/write heads (such as the SLG 4-1 or SLG 5-1) continue to operate on the same coaxial cable runs, and the existing MDS D124 or MDS D160 transponders on the workpiece carriers remain fully compatible.

Where the installation involves an older SIMATIC S5 controller, the migration path is more involved. The S5 CPU communicates with the MOBY-I system through an IM 308-C PROFIBUS master or a dedicated CP module. Replacing the S5 with a modern S7-1500 CPU while retaining the MOBY-I field hardware is technically feasible using a SIMATIC RF182C communication module, which bridges the legacy MOBY-I SLG heads to a PROFINET IO network. This approach preserves the existing cabling infrastructure and transponder inventory while delivering the processing power and diagnostics of current-generation Siemens automation.

For sites planning a full RFID platform upgrade, the SIMATIC RF310R or RF350R read/write heads paired with an RF180C communication module represent the natural successor architecture. These components integrate directly into TIA Portal engineering workflows and support ISO 15693 transponders, offering a broader selection of tag form factors for new workpiece carrier designs. The RF300 MDS transponder family provides significantly higher memory capacity than the legacy MOBY-I MDS, which is advantageous in applications requiring on-tag process data storage.

Power supply integrity is a frequently overlooked factor in RFID system retrofits. The 6GT2002-0AA00 and its associated ASM modules draw 24 V DC from the control cabinet power supply. When replacing multiple modules simultaneously, verify that the installed SITOP PSU100S or equivalent 24 V DC power supply has sufficient current headroom. A marginal power supply is a common root cause of intermittent RFID read errors that are misdiagnosed as module faults.

Signal isolation is another consideration when the MOBY-I system shares a cabinet with variable-frequency drives or servo amplifiers. Inserting a SIMATIC ET 200SP distributed I/O station or a dedicated signal isolator between the ASM bus and the main PLC backplane can eliminate noise-induced communication faults without requiring a full system redesign.

Finally, for sites that require remote diagnostics or integration with MES/SCADA platforms, the SIMATIC S7-1200 with an onboard PROFINET port and a CP 1243-1 communications processor provides a cost-effective gateway that can coexist with the legacy MOBY-I hardware during a phased migration, allowing production to continue uninterrupted while the new architecture is validated.

Retrofit Guidance FAQ

Q: Can I replace the 6GT2002-0AA00 without modifying my STEP 7 program?
A: Yes, for a direct 1:1 replacement. The Basic Module is transparent to the PLC program; all RFID logic resides in the function blocks loaded on the ASM 452/454 interface module. Swapping the Basic Module does not require any software changes.

Q: Are the existing SLG read/write heads compatible with a new 6GT2002-0AA00?
A: Yes. The SLG 4, SLG 5, and SLG 6 series heads connect to the Basic Module via standard coaxial cable and are fully interchangeable between MOBY-I Basic Module units of the same generation.

Q: What is the physical footprint of the 6GT2002-0AA00?
A: The module occupies a standard S7-300 rack slot (40 mm wide) or can be mounted on a 35 mm DIN rail using the supplied adapter. No additional cabinet space is required for a direct replacement.

Q: Can the MOBY-I system communicate with a SIMATIC S7-1500 PLC?
A: Not directly. The MOBY-I ASM bus is not natively supported by S7-1500. A migration using the SIMATIC RF182C communication module and PROFINET IO is the recommended path for S7-1500 integration while retaining existing SLG heads and MDS transponders.

Q: What communication protocol does the 6GT2002-0AA00 use?
A: The Basic Module uses the proprietary MOBY-I ASM bus (RS-422 physical layer) to communicate with the ASM 452 or ASM 454 interface module. It does not natively support PROFIBUS or PROFINET; those protocols are handled at the interface module level.

Q: How do I verify the module is functioning correctly after installation?
A: Use the STEP 7 hardware diagnostics or the LED indicators on the ASM interface module. A solid green LED on the Basic Module confirms 24 V DC power is present. A flashing green LED on the ASM indicates active communication with the PLC. Perform a read/write test with a known-good MDS transponder to confirm end-to-end RFID functionality before returning the line to production.

Warranty Assurance

Every 6GT2002-0AA00 shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Our pre-shipment inspection protocol includes visual examination for physical damage, power-on functional verification, and communication interface testing against a reference ASM module. Units that do not pass all inspection criteria are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement unit or full refund within the warranty period. Our after-sales response target is one business day for initial acknowledgement and three business days for resolution. Replacement units are dispatched from our Xiamen warehouse with express international freight to minimise your downtime.

For procurement teams requiring documentation, we can provide inspection reports, packing lists, and commercial invoices in English and Chinese. We support T/T bank transfer, and can accommodate blanket purchase orders for customers maintaining strategic spare parts inventories.

Contact our technical sales team to confirm stock availability, lead time, and volume pricing before placing your order.