Siemens 6GT2002-0AA00 Migration-Ready RFID Module

Overview

Siemens 6GT2002-0AA00 Migration-Ready RFID Module: Legacy System Retrofit & Compatibility Upgrade

The Siemens 6GT2002-0AA00 is a MOBY-I series RFID Basic Module designed for industrial identification and tracking applications within legacy Siemens automation environments. As production lines built around the MOBY-I platform approach end-of-life or face discontinued spare parts availability, the 6GT2002-0AA00 remains one of the most sought-after retrofit components for engineers tasked with extending system lifespan, restoring failed identification nodes, or executing a controlled migration to a modern RFID architecture.

This module serves as a direct replacement unit for degraded or failed MOBY-I read/write heads and basic interface modules in existing control cabinets. It is compatible with the MOBY-I communication interface ASM 452 (6GT2002-0AA00 series) and integrates with SIMATIC S5 and early SIMATIC S7 controller platforms via PROFIBUS DP or point-to-point serial links. Engineers replacing this module must verify the existing backplane slot assignment, terminal wiring layout, and the firmware revision of the connected ASM communication module to ensure seamless handover without reprogramming the host PLC logic.

Migration Compatibility Table

Retrofit Planning for Existing Automation Systems

Replacing the 6GT2002-0AA00 in an active production environment requires a structured retrofit plan that accounts for both hardware compatibility and software continuity. The first step is a physical audit of the control cabinet: confirm the available installation space, the existing 24 V DC power supply capacity (typically a Siemens SITOP PSU100S or equivalent), and the terminal block wiring diagram for the current MOBY-I module. The 6GT2002-0AA00 connects to the ASM communication module — commonly the ASM 452 or ASM 454 — via a dedicated cable assembly, and the cable connector type and pin assignment must be verified against the original system documentation before the new module is installed.

On the communication side, the PROFIBUS DP segment carrying the MOBY-I ASM module must be reviewed for node address conflicts. The replacement 6GT2002-0AA00 must be assigned the same PROFIBUS DP address as the failed unit to avoid reconfiguring the SIMATIC S7-300 or S7-400 hardware configuration in STEP 7 or TIA Portal. If the host controller is a legacy SIMATIC S5, the point-to-point serial link parameters — baud rate, parity, and stop bits — must be matched exactly to the original configuration stored in the S5 program blocks.

For sites migrating from a MOBY-I architecture toward a newer SIMATIC RF300 or RF600 RFID platform, the 6GT2002-0AA00 can serve as a bridging component during phased migration, keeping legacy identification nodes operational while new RF180C communication modules and RF300 transponders are introduced on upgraded conveyor segments. This phased approach allows engineering teams to validate new HMI screen layouts — typically WinCC or TP700 Comfort panels — against live production data before decommissioning the MOBY-I nodes entirely.

I/O mapping is another critical checkpoint. The data blocks used by the MOBY-I ASM module to exchange tag read/write results with the PLC must remain intact. Any change to the DB structure or the FC/FB function blocks handling RFID data will require regression testing of the PLC program. Where possible, retain the original FB45 or equivalent MOBY-I function block and simply re-establish the hardware link through the replacement module. Signal isolators may be required on long cable runs between the SLG antenna and the ASM module to maintain signal integrity after the swap.

Downtime Control During System Migration

Minimizing unplanned downtime during a MOBY-I module replacement is achievable with the right preparation. Before any physical work begins, back up the complete PLC program from the SIMATIC S7 controller using STEP 7 or TIA Portal, and archive the hardware configuration including the PROFIBUS DP network topology. If the system uses a SIMATIC S5, use S5 for Windows or an equivalent tool to extract and archive the program blocks and system data.

Pre-stage the replacement 6GT2002-0AA00 on a bench test rig if possible, connecting it to a spare ASM 452 or ASM 454 and a test transponder to verify read/write functionality before the scheduled maintenance window. This pre-commissioning step eliminates the risk of discovering a configuration mismatch during the live swap. Label all terminal connections on the existing module before disconnection, and photograph the wiring layout as a reference for reconnection.

During the swap, power down only the affected PROFIBUS DP segment or the specific control cabinet section — not the entire line — to maintain control continuity on unaffected stations. After physical installation and rewiring, restore power and verify the PROFIBUS DP diagnostic LEDs on the ASM module before enabling the PLC data exchange. Perform a full read/write cycle test with a known transponder before releasing the line back to production. Document the firmware version of the installed 6GT2002-0AA00 and the ASM module for future maintenance records.

All units supplied by KNMKS are tested and verified before shipment, with a support terms confirmed by quotation covering hardware defects. Stock availability is confirmed at time of order, and global delivery details confirmed by RFQ is supported to minimize lead time impact on your maintenance schedule.

Retrofit Support FAQ

Q1: Is the 6GT2002-0AA00 a direct replacement for my existing MOBY-I basic module?
Yes. The 6GT2002-0AA00 is a direct replacement for failed or degraded MOBY-I basic modules in the same series. Confirm the terminal block pinout and cable connector type against your existing wiring diagram before installation. No PLC program changes are required if the PROFIBUS DP node address and ASM firmware version are matched correctly.

Q2: What commissioning steps are required after installing the replacement module?
After physical installation and rewiring, verify the PROFIBUS DP node address on the ASM communication module, confirm the baud rate and network termination settings, and perform a full read/write cycle test with a known MOBY-I transponder. Check the ASM diagnostic LEDs and the PLC diagnostic buffer for any fault entries before releasing the system to production.

Q3: Can this module be used during a phased migration from MOBY-I to a newer RFID platform?
Yes. The 6GT2002-0AA00 is well-suited for phased migration scenarios where legacy MOBY-I nodes must remain operational while newer RFID infrastructure — such as SIMATIC RF300 readers and RF180C communication modules — is introduced on upgraded line segments. This approach allows parallel validation of new and legacy identification systems without a full cutover.

Q4: What support terms and pre-shipment testing does KNMKS provide?
All 6GT2002-0AA00 units supplied by KNMKS are tested and verified before shipment. A support terms confirmed by quotation is provided covering hardware defects under normal operating conditions. Stock availability is confirmed at time of order. Contact admin@knmks.com or +86 18359268345 for lead time and inventory confirmation.

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6GT2002-0AA00

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