Siemens 6ES7135-6FB00-0BA1 Replacement for ET 200SP

Product Overview

Siemens 6ES7135-6FB00-0BA1 Replacement for ET 200SP: Smooth Migration & Backward-Compatible Upgrade

The Siemens 6ES7135-6FB00-0BA1 is a 2-channel analog output module designed for the ET 200SP distributed I/O platform, delivering ±10 V / 0–20 mA / 4–20 mA output signals with 16-bit resolution. As legacy control systems age and original stock becomes increasingly difficult to source, many plant engineers and procurement teams are actively seeking a verified, drop-in replacement that preserves existing wiring, program logic, and cabinet layouts without forcing a full system redesign.

TOPNLMS supplies the 6ES7135-6FB00-0BA1 as a direct replacement module, fully tested before shipment, with a 12-month warranty and fast international logistics from Xiamen. Whether you are maintaining a running production line, building a retrofit spare-parts inventory, or executing a phased migration from an older S7-300 or S7-400 distributed I/O architecture to the modern ET 200SP platform, this module integrates without requiring hardware re-engineering.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration to the 6ES7135-6FB00-0BA1 rarely involves a single module swap. In practice, the upgrade path touches several interconnected components across the control cabinet and field network. The ET 200SP station requires a compatible interface module — typically the IM 155-6 PN ST (6ES7155-6AU01-0BN0) — which handles PROFINET IO communication between the CPU and the distributed I/O rack. If your existing infrastructure still runs PROFIBUS DP, a IM 155-6 DP (6ES7155-6BA01-0CN0) variant allows you to retain the fieldbus topology while modernizing the I/O hardware.

Each analog output module on the ET 200SP platform must be paired with a dedicated BaseUnit. For the 6ES7135-6FB00-0BA1, the correct BaseUnit is the BU15-P16+A0+2D (6ES7193-6BP20-0BA0), which provides the push-in terminal block for field wiring. Reusing existing 4–20 mA field cables is straightforward — the terminal layout is consistent, and no re-labeling of the junction box is typically required.

On the power side, the ET 200SP station draws 24 V DC from a SITOP PSU100S (6EP1334-2BA20) or equivalent DIN-rail power supply. If the existing cabinet power budget is tight, the slim 15 mm module width of the ET 200SP series often frees enough rail space to add a dedicated supply without a full cabinet redesign. For stations with mixed digital and analog I/O, pairing the 6ES7135-6FB00-0BA1 with a 6ES7131-6BF01-0BA0 (DI 8×24VDC ST) digital input module and a 6ES7132-6BF01-0BA0 (DQ 8×24VDC/0.5A ST) digital output module on the same rack is a common and well-validated configuration.

For applications that previously relied on HART-capable analog outputs, the 6ES7135-6HD00-0BA1 (4-channel AO with HART) is the natural upgrade path within the same ET 200SP family, sharing the same rack, BaseUnit type, and PROFINET interface module. Engineers migrating from older S7-300 FM 355 closed-loop control modules should also evaluate whether the analog output channels can be reassigned to a SIMATIC S7-1500 CPU with integrated PID control blocks, eliminating the need for a dedicated function module entirely.

Where signal isolation is required between the PLC analog output and field instrumentation — particularly in environments with ground loops or high common-mode voltage — a SITRANS signal isolator or MACX analog signal conditioner can be inserted between the module terminal and the field device without any changes to the TIA Portal hardware configuration.

For programming, the migration from Step 7 Classic (S7-300/400) to TIA Portal V17/V18 is the standard path. The analog output channel configuration in TIA Portal uses the same parameter structure (output range, short-circuit response, substitute value behavior) as the legacy hardware, making program adaptation predictable and well-documented.

Retrofit Guidance FAQ

Q: Can I reuse existing 4–20 mA field wiring?
Yes. The push-in terminals on the ET 200SP BaseUnit accept the same wire cross-sections as legacy screw terminals (0.2–1.5 mm²). Field wiring from the old ET 200S or SM 332 module can be reconnected directly to the BaseUnit without re-termination at the junction box.

Q: Do I need to modify my TIA Portal / Step 7 program?
If replacing a like-for-like 6ES7135-6FB00-0BA1 on an existing ET 200SP station, no program changes are required — the hardware configuration remains identical. Migrating from an ET 200S or S7-300 SM 332 requires re-mapping the analog output addresses in the hardware configuration and verifying substitute value settings.

Q: Is PROFIBUS DP supported?
The 6ES7135-6FB00-0BA1 communicates via the ET 200SP backplane bus and relies on the interface module for fieldbus connectivity. PROFINET IO is the standard; PROFIBUS DP is supported via the IM 155-6 DP interface module variant.

Q: Will the module fit in my existing cabinet?
At 15 mm width, the ET 200SP module is significantly slimmer than ET 200S or S7-300 I/O modules. In most retrofit scenarios, the new station occupies less DIN-rail space, providing room for additional I/O expansion or improved cable management.

Q: How do I handle the transition from a discontinued model?
TOPNLMS maintains stock of the 6ES7135-6FB00-0BA1 specifically to support customers whose OEM supply chains have been disrupted. Each unit is individually tested for output accuracy, channel isolation, and bus communication before shipment. A certificate of testing is available on request.

Warranty Assurance

Every 6ES7135-6FB00-0BA1 shipped by TOPNLMS carries a 12-month warranty covering manufacturing defects, output calibration drift, and communication faults. Pre-shipment testing includes analog output accuracy verification across all configured ranges (±10 V, 0–20 mA, 4–20 mA), backplane bus communication check, and visual inspection for physical integrity.

In the event of a warranty claim, TOPNLMS provides a replacement unit dispatch within 3 business days of fault confirmation, with return logistics coordinated by our after-sales team. For time-critical production environments, advance replacement (ship-before-return) is available upon request.

Our procurement support team is available to assist with cross-referencing discontinued part numbers, confirming BaseUnit compatibility, and advising on quantity requirements for planned maintenance intervals. Bulk orders for MRO (Maintenance, Repair & Operations) inventory are supported with volume pricing and consolidated shipment options.

Stock is held in Xiamen and ships via DHL Express, FedEx International Priority, or sea freight depending on order volume and urgency. Lead time for in-stock units is typically 1–3 business days to dispatch.