Siemens es7137-6bd00-0ba0

By Abdullah Zahid
13 min read
Siemens 6ES7137-6BD00-0BA0 SIMATIC ET 200SP CM 4xIO-Link ST communication module for smart sensor integration

Siemens 6ES7137-6BD00-0BA0 SIMATIC ET 200SP CM 4xIO-Link ST: Specifications, Pricing, and Selection Guide

Controls engineers specifying IO-Link connectivity for a SIMATIC ET 200SP distributed I/O system reach a clear decision point: how many channels are needed, what transmission rates must be supported, and which module slots are available. The Siemens 6ES7137-6BD00-0BA0 — the SIMATIC ET 200SP CM 4xIO-Link ST Communication module IO-Link Master V1.1 — answers those questions with four simultaneously controllable IO-Link channels, support for COM1 through COM3 transmission rates up to 230.4 kBaud, integrated short-circuit protection at 700 mA per channel, and 2 KB of parameter memory per port. At 13 mm wide, it fits into the ET 200SP backplane without consuming disproportionate cabinet real estate.

If you have already confirmed this is the right part, check current pricing and availability for the 6ES7137-6BD00-0BA0 at LeadTime.ca — ships worldwide.

Who Should Buy the 6ES7137-6BD00-0BA0 — and Who Shouldn't

This module is the correct choice for engineers integrating up to four IO-Link smart sensors or actuators into an existing SIMATIC ET 200SP system. It is specifically right for you if all of the following apply:

  • Your base unit is a SIMATIC ET 200SP type A0 with at least one available 13 mm slot
  • You need exactly four IO-Link channels with simultaneous controllability from a single module
  • Your IO-Link devices operate at COM1 (4.8 kBaud), COM2 (38.4 kBaud), or COM3 (230.4 kBaud)
  • Your 24 VDC power supply can deliver 45 mA for the module plus up to 700 mA per active IO-Link port
  • All cable runs from the cabinet to field devices are 20 m or less (unshielded)
  • Firmware version V2.2.2 and your TIA Portal or S7-PCON version are confirmed compatible

If you require more than four IO-Link channels on a single module, need isochronous real-time synchronization, or are installing outside an ET 200SP system entirely, this module is not the correct fit. Consider stacking multiple 6ES7137-6BD00-0BA0 units for higher channel counts, or evaluate PROFINET communication modules for isochronous synchronization requirements.

On this page:

What the 6ES7137-6BD00-0BA0 Actually Does in a Running System

The 6ES7137-6BD00-0BA0 functions as the protocol bridge between the ET 200SP PLC backplane and up to four remote IO-Link field devices. Rather than routing discrete analog signal wires back to separate input and output cards, the module handles all IO-Link communication, diagnostics, and power delivery from a single 13 mm slot. Each of its four ports manages its own IO-Link session independently — meaning a COM3 pressure transmitter on port 1 and a COM1 legacy encoder on port 4 can run simultaneously without conflict.

The module stores 2 KB of parameter data per port. When a sensor is replaced in the field, the module automatically downloads the stored parameters to the new device at startup — eliminating manual recalibration at the machine. This parameter memory behavior, combined with port-level diagnostics covering wire break, short circuit, and supply voltage monitoring, is what separates this module from a passive discrete wiring approach. Engineers replacing analog potentiometers or 4–20 mA transmitters with IO-Link smart sensors keep their ET 200SP base unit investment intact and gain diagnostic depth that analog I/O cards cannot provide.

The module supports IO-Link protocol versions 1.0 and 1.1, making it backward compatible with older IO-Link 1.0 devices already deployed in a facility while remaining capable of communicating with the latest generation of IO-Link 1.1 smart sensors. Firmware version V2.2.2 is the current release, and the module supports field firmware updates without hardware replacement.

Where This Module Sits in a Typical ET 200SP System

The 6ES7137-6BD00-0BA0 occupies a communication module slot on the ET 200SP backplane, sitting between the CPU or interface module and downstream IO-Link field devices. It neither replaces the base unit nor communicates independently over PROFINET — it extends the reach of the ET 200SP system into the IO-Link device layer.

  • SIMATIC PLC or ET 200SP interface module connects to the PROFINET or PROFIBUS network and manages the backplane
  • ET 200SP type A0 base unit provides the physical backplane slots and power distribution rail
  • 6ES7137-6BD00-0BA0 CM 4xIO-Link ST module occupies one 13 mm slot and exposes four IO-Link master ports
  • Each port connects via an M12 or three-wire cable (maximum 20 m unshielded) to a single IO-Link device
  • IO-Link devices — pressure transmitters, valve terminals, encoders, solenoid manifolds — communicate bidirectionally over those point-to-point links

Industries and Applications Where This Module Gets Specified

In food and beverage processing, the 6ES7137-6BD00-0BA0 commonly appears in lines migrating from analog pressure and temperature transmitters to IO-Link smart sensors. The 2 KB parameter memory per port means a sensor swap on a filling line does not require a maintenance technician to manually re-enter calibration data — the module handles the parameter restore automatically.

Automotive assembly and packaging machinery OEMs use this module to consolidate four valve terminal or solenoid manifold connections into a single cabinet slot. Machine builders designing compact panels appreciate the 13 mm module width; a fully populated four-module block manages 16 IO-Link channels in 52 mm of DIN rail depth.

In pharmaceutical manufacturing and material handling automation, the module's port-level diagnostic alarms for wire break and short circuit provide the audit trail and fault isolation capability that regulated environments require. Condition monitoring applications leverage the IO-Link parameter data channel to read device health counters and lifecycle data from actuators or drives without adding separate monitoring hardware.

Multi-spindle CNC machining centers use it to connect tool-change and position feedback sensors at each spindle head, reducing wiring complexity compared to running individual analog signal pairs back to a centralized analog input card.

Application Typical Deployment
Smart sensor migration on legacy production lines Replace analog transmitter inputs with IO-Link pressure or temperature sensors; preserve ET 200SP base unit
Valve terminal and solenoid manifold control Cabinet-mounted ET 200SP with one or more CM 4xIO-Link modules driving proportional valve terminals
Condition monitoring and predictive maintenance Read device health counters and lifecycle parameters from IO-Link actuators without additional hardware
Packaging and bottling machinery OEM Compact panel build with 13 mm module width; up to 4 IO-Link channels per module slot
Pharmaceutical manufacturing Port-level wire break and short-circuit diagnostics support fault isolation in regulated environments
Multi-spindle machining centers Per-spindle IO-Link sensors for tool change and position feedback consolidated to single module

Specifications an Engineer Needs Before Ordering

Parameter Specification
Supply Voltage 24 VDC (20.4 to 28.8 V permissible range)
Input Current (No Load) 45 mA typical
Output Current Per Channel 700 mA (short-circuit protection integrated)
Maximum Output Current (All Channels) 2.1 A
Number of IO-Link Ports 4 (all simultaneously controllable)
IO-Link Transmission Rates COM1: 4.8 kBaud / COM2: 38.4 kBaud / COM3: 230.4 kBaud
Maximum Cable Length 20 m unshielded per port
Parameter Memory Per Port 2 KB (I&M0 to I&M3)
Module Dimensions (W × H × D) 13 mm × 73 mm × 58 mm
Operating Temperature -30 to +60°C horizontal / -30 to +50°C vertical

Full technical specifications are available on the product page at LeadTime.ca.

6ES7137-6BD00-0BA0 vs. Comparable ET 200SP Communication Options

Module Protocol Channels / Devices Synchronization Best Fit
6ES7137-6BD00-0BA0 IO-Link V1.0 / V1.1 4 IO-Link ports Not isochronous Up to 4 smart sensors or actuators in ET 200SP; compact cabinet builds
Discrete Analog I/O Module Analog signal (4–20 mA / 0–10 V) 8 or 16 channels typical Not applicable High channel density; no parameter memory or per-channel diagnostics
PROFINET CM (ET 200SP) PROFINET / Industrial Ethernet 16+ real-time devices Isochronous supported Large distributed networks; isochronous motion control requirements
Standalone IO-Link Controller IO-Link Varies by product Not applicable Retrofit to non-ET 200SP or legacy PLC systems

If your application requires exactly four IO-Link channels within an existing ET 200SP system and isochronous synchronization is not required, the 6ES7137-6BD00-0BA0 is the correct choice — check current availability and pricing at LeadTime.ca.

Expert Verdict: When to Order It and When to Walk Away

The 6ES7137-6BD00-0BA0 does exactly what it claims: it brings four independently managed IO-Link channels into the ET 200SP backplane with integrated diagnostics, automatic parameter restore, and support for the full COM1 through COM3 rate range. For engineers migrating discrete analog wiring to smart IO-Link sensors in an existing ET 200SP installation, this is one of the most direct upgrade paths available — no new base unit hardware, no rework of the backplane, just a 13 mm module in an available slot. The 2 KB parameter memory per port and per-port fault detection (wire break, short circuit, supply voltage) make it genuinely useful for reducing field troubleshooting time, not just as a protocol translator.

Where the module has real limits: if you need more than four IO-Link channels, you will be stacking modules rather than finding a higher-density single-module solution in this product line. If isochronous real-time synchronization is a hard requirement for coordinated motion control, this module cannot satisfy it — that is a PROFINET CM application. And if your cable runs to field devices exceed 20 m, the IO-Link specification itself is the constraint, not a module limitation you can work around with shielding. The operating temperature ceiling of +60°C horizontal and +50°C vertical is also worth verifying in high-ambient cabinet installations. If your environment exceeds -30 to +60°C horizontal, a different module is required.

On the procurement side, single-unit pricing from authorized distributors runs in the $525 to $560 USD range, with volume discounts available at 5, 10, and 25+ unit quantities. Typical lead times through stocking distributors are one to two weeks. The firmware update capability to V2.2.2 means you are not facing a hardware replacement cycle when Siemens releases protocol improvements — that matters for long-term installed base management. If this matches your system requirements, view current stock and pricing for the 6ES7137-6BD00-0BA0 at LeadTime.ca.

For volume pricing or to confirm lead time before committing to a build, contact the LeadTime.ca team directly — we ship worldwide.

Wiring and Installation Overview

  • The module requires a SIMATIC ET 200SP type A0 base unit slot; insert into any available slot in the 16-slot backplane — electronic coding ensures correct position recognition automatically.
  • Confirm your external 24 VDC supply (20.4 to 28.8 V range) is rated to deliver 45 mA for the module itself plus up to 700 mA per active IO-Link port; integrated short-circuit protection on the output current means no external fuses are required on the IO-Link power delivery lines.
  • Connect IO-Link devices to port A or port B connections using M12 connectors or three-wire configuration; port type B supports 24 VDC supply via external terminal for encoder power applications.
  • Cable runs must not exceed 20 m unshielded per port; shielded cables are also supported but the 20 m maximum applies equally.
  • Verify each IO-Link device's transmission rate (COM1 at 4.8 kBaud, COM2 at 38.4 kBaud, or COM3 at 230.4 kBaud) against your module configuration in TIA Portal or S7-PCON before downloading the PLC program; a rate mismatch will prevent device communication.

Full wiring diagrams, pinout tables, and commissioning procedures are available in the Siemens equipment manual (04/2022 version) from the Siemens Industry Online Support portal.

Compatible Modules and System Expansion

The 6ES7137-6BD00-0BA0 operates within the broader SIMATIC ET 200SP modular ecosystem. The following components are confirmed compatible based on the specifications provided in this brief:

  • SIMATIC ET 200SP type A0 base units — the only base unit family this module is compatible with; type A0 designation must be verified on the serial number plate or technical documentation before ordering
  • TIA Portal engineering software — used for port parameter configuration, I&M data management, and firmware updates to V2.2.2
  • S7-PCON engineering tool — alternative configuration tool; verify version compatibility with CM 4xIO-Link V2.2.2 before use
  • IO-Link devices (protocol 1.0 and 1.1) — any IO-Link certified device operating at COM1, COM2, or COM3 transmission rates and connected via port type A or port type B wiring
  • External 24 VDC industrial-grade power supply — Class 2 designation is not required; an industrial-grade regulated supply rated for the combined module and port current draw is recommended

What Engineers Get Wrong When Ordering This Part

Before placing your purchase order for the 6ES7137-6BD00-0BA0, work through this checklist exactly as written — every item on this list has caused a wrong-part order or a delayed commissioning start:

  1. Verify base unit is SIMATIC ET 200SP type A0 before ordering; this module is NOT compatible with other PLC families (S7-1200, S7-1500 standalone installations)
  2. Confirm 24 VDC power supply capacity and polarity; module requires 45 mA typical input current plus 700 mA per active IO-Link port
  3. Check that IO-Link devices connected operate at COM1 (4.8 kBaud), COM2 (38.4 kBaud), or COM3 (230.4 kBaud); non-standard rates will fail
  4. Ensure all four ports will be used; partially filled modules function normally but do not reduce cost
  5. Verify cable runs to field devices do not exceed 20 m unshielded maximum cable length per IO-Link spec
  6. Confirm firmware version V2.2.2 is compatible with your engineering tool version (S7-PCON, TIA Portal version level)

If you have worked through this checklist and confirmed the 6ES7137-6BD00-0BA0 is the right part, view current pricing and availability at LeadTime.ca or contact us directly to confirm lead time before committing to your build schedule.

Frequently Asked Questions

Can the 6ES7137-6BD00-0BA0 be used with an S7-1200 or S7-1500 PLC directly?

No. The 6ES7137-6BD00-0BA0 is only compatible with SIMATIC ET 200SP type A0 base units. It plugs into the ET 200SP backplane and communicates through the ET 200SP interface module — it cannot be inserted directly into an S7-1200 or S7-1500 rack. Confirm your base unit model before ordering.

What happens if only two of the four IO-Link ports are connected to devices?

The module functions normally with fewer than four devices connected. Unused ports remain inactive and do not generate fault alarms unless the port is configured to expect a device in your TIA Portal or S7-PCON project. The module cost does not change based on how many ports are populated — four active ports or one active port, the purchase price is the same.

Does the 2 KB parameter memory per port automatically restore settings after a sensor is swapped?

Yes. When a new IO-Link device is connected to a port, the module automatically downloads the stored I&M0 to I&M3 parameter data to the replacement device at startup. This eliminates manual recalibration in the field — provided the replacement device is the same model or parameter-compatible with what was stored. This is one of the primary reasons engineers specify this module when upgrading from discrete analog sensors.

Is shielded cable required for the 20 m maximum cable length?

No. The 20 m maximum cable length per IO-Link port applies to both unshielded and shielded cables. Shielded cables do not extend the allowable cable run beyond 20 m under the IO-Link specification. If your installation requires runs longer than 20 m, a different topology or IO-Link repeater solution must be evaluated.

What does the red Fn LED on a port indicate, and what is the first troubleshooting step?

The Fn LED (red, per port) indicates a port-level fault — most commonly a wire break, short circuit, device offline condition, or parameter mismatch. The first step is to check cable continuity and connector seating at both the module and the field device. If the cable checks out, verify the IO-Link device's transmission rate matches the port configuration (COM1, COM2, or COM3) in your engineering tool. A parameter mismatch can be cleared by re-downloading I&M data and rebooting the IO-Link device.

What is the typical single-unit price for the 6ES7137-6BD00-0BA0 and how long does it take to ship?

Single-unit pricing from authorized distributors ranges from approximately $525 to $560 USD depending on the supplier and region. Typical lead time through stocking distributors is one to two weeks for in-stock units. Volume discounts are generally available at 5, 10, and 25+ unit quantities. Lead times can extend to two to three weeks for make-to-order quantities through direct manufacturer channels.

Why Source the 6ES7137-6BD00-0BA0 from LeadTime.ca

  • LeadTime.ca ships the 6ES7137-6BD00-0BA0 worldwide — no regional restrictions on order placement or delivery
  • Volume pricing is available for multi-unit orders; contact the team directly for quantity breaks at 5, 10, or 25+ units
  • Hard-to-source and longer lead time parts can be quoted and tracked — useful when project schedules depend on confirmed delivery dates
  • The team responds quickly to technical sourcing questions, helping confirm part number accuracy before an order is placed
  • Authorized distributor chain ensures genuine product with full manufacturer warranty eligibility

At-a-Glance Summary

  • Model: Siemens 6ES7137-6BD00-0BA0 — SIMATIC ET 200SP CM 4xIO-Link ST Communication module IO-Link Master V1.1
  • Four IO-Link channels, all simultaneously controllable; supports IO-Link protocol versions 1.0 and 1.1
  • Transmission rates: COM1 at 4.8 kBaud, COM2 at 38.4 kBaud, COM3 at 230.4 kBaud
  • Supply voltage: 24 VDC (20.4 to 28.8 V); input current 45 mA typical (no load)
  • Output current: 700 mA per channel with integrated short-circuit protection; 2.1 A maximum across all channels
  • Maximum cable length: 20 m unshielded per port; shielded cables also limited to 20 m
  • Parameter memory: 2 KB per port (I&M0 to I&M3); automatic restore on sensor replacement
  • Module dimensions: 13 mm × 73 mm × 58 mm; weight 30 g
  • Operating temperature: -30 to +60°C horizontal / -30 to +50°C vertical
  • Compatible base unit: SIMATIC ET 200SP type A0 only — not compatible with S7-1200 or S7-1500 standalone
  • Firmware version V2.2.2; field-updateable via TIA Portal or S7-PCON
  • Single-unit pricing: approximately $525 to $560 USD; typical lead time 1 to 2 weeks through stocking distributors
  • Global warming potential (total lifecycle): 25.2 kg CO2 equivalent