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PRODUCT DESCRIPTION
Add a PROFIBUS DP master connection to a supported ET 200S CPU
Siemens 6ES7138-4HA00-0AB0 is the PROFIBUS DP master interface module for supported ET 200S IM151-7 CPU and IM151-8 PN/DP configurations. It provides a nine-pin D-sub socket and supports PROFIBUS transmission rates up to 12 Mbit/s.
The module extends the CPU's communication arrangement rather than acting as a standalone controller or generic serial adapter. Only one master interface is permitted per CPU. Confirm the installed CPU execution, engineering software, bus configuration and installation instructions before selecting a replacement.
The module extends the CPU's communication arrangement rather than acting as a standalone controller or generic serial adapter. Only one master interface is permitted per CPU. Confirm the installed CPU execution, engineering software, bus configuration and installation instructions before selecting a replacement.
BEFORE YOU BUY
Confirm the complete installed configuration
- Match the complete 6ES7138-4HA00-0AB0 module code and installed CPU order number.
- Confirm the CPU-specific STEP 7 support and retained DP master configuration.
- Check the right-side mounting arrangement, PROFIBUS connector and available rail space.
- Review the actual slave count, address allocation, baud rate and cable segments.
ACTUAL APPLICATIONS
Industrial Production and Service Sectors
These industry examples describe Siemens' broader market coverage, not verified installations of this exact product. Product suitability depends on the documented configuration and engineering requirements.
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01 · WATER & WASTEWATER
Drinking Water and Wastewater Services
Drinking water production for public and community supply services.Wastewater treatment serving households, communities and industrial water users. -
02 · PLASTICS PROCESSING
Extrusion and Injection Molding
Plastic extrusion for material production within the plastics industry.Injection molding for plastic product manufacturing across industrial markets. -
03 · FOOD & BEVERAGE
Dairy, Bakery and Confectionery
Dairy production and processing within the commercial food industry.Bakery and confectionery manufacturing across diverse consumer food categories.
Technical specifications for 6ES7138-4HA00-0AB0
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Product Model6ES7138-4HA00-0AB0
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Product ParametersPROFIBUS DP Master Interface
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ManufacturerSiemens
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Supported CPU familiesET 200S IM151-7 CPU or IM151-8 PN/DP; verify exact CPU execution
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Expansion quantityMaximum 1 DP master module per CPU
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Network rolePROFIBUS DP master; inactive without configuration in the documented IM151-7 arrangement
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Physical interfaceRS485; 9-pin D-sub socket
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Transmission rates9.6 / 19.2 / 45.45 / 93.75 / 187.5 / 500 kbit/s; 1.5 / 3 / 6 / 12 Mbit/s
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Electrical isolationDP master interface isolated in the documented IM151-7 CPU configuration
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Connector supply limitationNo 15-30 V interface supply; pins 2 and 7 unassigned on the master module
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Mounting locationImmediately to the right of the IM151-7 CPU; install before terminal modules
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Bus-fault indicationRed BF LED; distinguish steady and flashing indications using CPU diagnostics
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DP slave capacityUp to 32 slaves with the documented IM151-7 CPU 6ES7151-7AA21-0AB0
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DP address capacityUp to 2048 input and 2048 output bytes; 244 input and 244 output bytes per slave, for the documented IM151-7 CPU
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DP servicesDPV1, SYNC/FREEZE and direct data exchange supported with the documented IM151-7 CPU
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Bus-cycle supportConstant bus cycle supported; isochronous mode not supported in the documented IM151-7 CPU configuration
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Routing functionsPG/OP communication, routing and data-set routing with the documented IM151-7 CPU
View all additional
SYSTEM & REPLACEMENT CHECK
Information needed before ordering
Three direct checks to secure your system integration and minimize ordering risks.
Information
System integration
Replacement check
Manuals & support
ET 200S PROFIBUS DP MASTER
Check the CPU execution and the complete PROFIBUS configuration
Identify the installed CPU order number before using the detailed service and capacity figures. The exact module data sheet lists both IM151-7 CPU and IM151-8 PN/DP families, while the selected 2011 installation manual covers the IM151-7 7AA21 execution. CPU-specific software requirements and communication services must remain tied to the applicable document revision.
For the documented IM151-7 arrangement, install the DP master module directly to the CPU's right before fitting the terminal modules. Use the dedicated master-module connector diagram, not the CPU's different MPI/DP socket assignment. Retain the original installation context and use the complete ET 200S system instructions for general mounting, wiring and safety requirements.
Configure the interface as DP master and restore the intended PROFIBUS network parameters and slave layout. Without configuration, the documented interface remains inactive. Select cable lengths according to the baud-rate-specific PROFIBUS segment table, observe the separate stub-cable restrictions, and verify communications and diagnostics before accepting the maintained station for operation.
Features:
- CPU-scoped capability verification
- Dedicated master-module pin assignment
- Configured network and diagnostic checks
The Siemens 6ES7138-4HA00-0AB0 requires the documented hardware configuration, installation conditions and interface arrangement to be verified before system integration and commissioning.
INTERCHANGEABILITY
Verify the complete replacement identity before commissioning
Confirm the complete 6ES7138-4HA00-0AB0 label and the associated CPU execution before ordering a like-for-like spare. The selected manual explicitly names this module and its IM151-7 CPU scope. Similar ET 200S communication modules or a general serial adapter do not establish an equivalent replacement, even when their connectors appear similar.
Preserve the existing CPU project, PROFIBUS address, baud rate, slave configuration and diagnostic-address allocation through the authorized maintenance process. Siemens stores the DP address alongside the hardware configuration on the CPU's Micro Memory Card. Replacing the expansion hardware alone does not create the required master configuration or validate the connected slave address ranges.
Inspect the mechanical connection, bus connector and cable continuity after installation, then evaluate the BF indication and CPU diagnostic data. In the documented IM151-7 system, certain slave or bus failures call OB 86, and the CPU can stop if that block is absent. Verify the maintained project's intended fault response rather than treating LED clearance as the only acceptance test.
Features:
- Exact module and CPU identity retained
- Existing bus project and addressing preserved
- Fault-response behavior verified
The Siemens 6ES7138-4HA00-0AB0 requires replacement verification based on its complete order number, installed hardware, signal configuration and project documentation.
DOCUMENTATION STATUS
Browse the Manuals, Datasheets, Official Documents, Links
Important Notice: Official documents are provided through manufacturer links. Accessories, manuals, cables, calibration data, software, certificates, and other items are not included with this equipment unless listed in the stock item description.Features:
- Exact-model manufacturer data and relevant original manual pages
- Original terminal diagrams, configuration details and manufacturer safety context
- Accessories and supplied documentation follow the written quotation
Documentation for the Siemens 6ES7138-4HA00-0AB0 includes an independent technical summary and selected original manufacturer pages; check the applicable document edition against the delivered product and approved installation documentation.
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Important notice
Manuals, software, firmware, cables, calibration data and accessories are included only when listed in the quotation. AMIKON is an independent supplier and is not affiliated with or authorised by the manufacturer.
This content has been produced using multiple sources. Takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
BUYER INFORMATION
Commercial terms without hidden steps
Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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Shipping & delivery
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DispatchEligible stock: same / next day
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CarriersDHL, FedEx or UPS
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Ship fromXiamen, China
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Packed sizeConfirm final packed dimensions
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Payment & customs
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PaymentBank transfer (T/T)
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CurrenciesUSD · EUR · GBP · RMB
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Credit cardsNot accepted
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HS reference8517623990
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OriginConfirm supplied-unit origin
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Warranty & returns
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Warranty12 months from AMIKON
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InspectionLabel, condition and packing checks
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ReturnsPrior RMA authorisation required
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CompatibilityConfirm before order
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OEM warrantyDoes not apply
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Your written quote confirms the product identity, price, availability, lead time, warranty and shipping terms before payment.
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FREQUENTLY ASKED QUESTIONS
Questions buyers ask about 6ES7138-4HA00-0AB0
Direct answers about identity, compatibility, stock, warranty, payment and shipping.
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Can the module operate independently of an ET 200S CPU?
No standalone controller function is established. Siemens identifies it as a DP master interface for supported IM151-7 CPU or IM151-8 PN/DP configurations. For IM151-7, the master configuration and PROFIBUS address are stored with the CPU hardware configuration on the CPU's Micro Memory Card. -
Can two DP master modules be fitted to one CPU?
No. The exact data sheet states one module per CPU, and the IM151-7 instructions explicitly limit expansion to one DP master module. Check the existing station arrangement before adding or replacing the interface. -
Is the master-module socket wired like the CPU's MPI/DP socket?
Do not assume identical pin assignments. The master-module diagram leaves pins 2 and 7 unassigned, whereas the separate CPU socket diagram identifies external 24 V supply connections at those positions. Use the master-module diagram on page 77 for this module. -
Does constant bus-cycle support mean isochronous operation is supported?
No. The documented IM151-7 CPU configuration supports a constant bus cycle but explicitly does not support isochronous mode on the DP master interface. Treat those as different capabilities and check the exact CPU documentation for the intended application. -
What does a flashing BF indicator require checking?
For the documented IM151-7 master configuration, Siemens lists a failed or inaccessible configured slave and an incorrect configuration among the causes. Check bus continuity, slave status, configured address areas and diagnostic data. A steady BF indication can instead indicate a hardware bus fault or short circuit. -
Are the 32-slave and 2048-byte limits universal for every compatible CPU?
No universal claim is made. Those values come from the 2011 manual for IM151-7 CPU 6ES7151-7AA21-0AB0 with this DP master module. The data sheet also lists IM151-8 PN/DP compatibility, but its CPU-specific capacity and services require the corresponding manual.
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