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        Siemens 6ES7417-4HL01-0AB0
        Siemens 6ES7417-4HL01-0AB0
        Siemens 6ES7417-4HL01-0AB0
        Siemens 6ES7417-4HL01-0AB0
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        Siemens 6ES7417-4HL01-0AB0
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        6ES7417-4HL01-0AB0

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        1001 reviews ｜ Need a Specific Revision?
        The 6ES7417-4HL01-0AB0 is a Siemens SIMATIC S7-400H CPU 417H central unit for redundant systems, with 4 MB work memory (2 MB code/2 MB data), 4 interfaces (MPI/DP, DP, 2 for sync modules), and 0.1 µs execution speed.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 6ES7417-4HL01-0AB0

        • Manufacturer:
          Siemens
        • Part Number:
          6ES7417-4HL01-0AB0
        • Product Family:
          Siemens Simatic S7-400
        • Product Type:
          Central Unit
        • Work Memory (integrated):
          4 MB total (2 MB code, 2 MB data)
        • Work Memory (expandable, max.):
          20 MB (10 MB code, 10 MB data)
        • Load Memory (FEPROM expandable):
          max. 64 MB
        • Load Memory (RAM expandable):
          max. 64 MB
        • Execution Speed (bit/word/fixed):
          0.1 µs (typ.)
        • Execution Speed (floating point):
          0.6 µs (typ.)
        • Number of DBs (max.):
          8,192
        • Number of FBs/FCs (max.):
          6,144 each
        • S7 Counters / Timers:
          512 each
        • Flags (retentive):
          16 KB max.
        • Process Image (inputs/outputs):
          1,024 bytes each (default)
        • I/O Address Area (inputs/outputs):
          16 bytes (adjustable)
        • Number of Expansion Units:
          21 max.
        • DP Masters (integrated):
          2
        • Power Loss (typ.):
          10 W
        • Weight:
          1.35 kg
        • Estimated shipping dimensions:
          4.8x20.3x28.8cm
        • Tariff Code:
          9032899099
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Operating Environment Monitoring and Control

        Features:

        • Designed for S7‑400H fault‑tolerant systems; two CPUs synchronize via fiber optic cables; bumpless switchover on failure.
        • 4 MB integrated (2 MB code, 2 MB data); work memory expandable to 20 MB; load memory expandable to 64 MB via memory cards.
        • 0.1 µs execution time; supports 131,072 digital I/O and 8,192 analog I/O; 21 expansion units; 2 integrated DP masters (32 and 125 slaves).
        The 6ES7417-4HL01-0AB0 is purpose‑built for Siemens S7‑400H, a high‑availability automation system used in critical processes where even a few seconds of downtime is unacceptable. In an H‑system, two identical CPU 417H modules are installed in separate racks (or the same rack) and connected via dedicated fiber optic synchronization modules. The CPUs run in lockstep – both execute the same user program simultaneously, and all data is mirrored between them. If the primary CPU fails (power loss, hardware fault, or watchdog timeout), the standby CPU immediately takes over control without any loss of process data (bumpless switchover). This failover is transparent to the I/O and to higher‑level systems.

        Large automation programs, especially those in process industries, require substantial memory for code, data blocks, and extensive I/O mapping. The 6ES7417-4HL01-0AB0 comes with 4 MB of integrated work memory, partitioned as 2 MB for code and 2 MB for data. This is sufficient for medium‑sized applications. For larger projects, work memory can be expanded to 20 MB (10 MB code, 10 MB data). Load memory – where the user program is stored before being loaded into work memory – can be expanded to 64 MB using FEPROM or RAM memory cards (order separately). Up to 8,192 DBs, 6,144 FBs, and 6,144 FCs are supported.

        The 6ES7417-4HL01-0AB0 delivers processing speeds of 0.1 µs for bit, word, and fixed‑point operations – making it one of the fastest CPUs in the S7‑400H family. Floating‑point arithmetic executes in 0.6 µs. This speed is essential for applications requiring fast interlocking, high‑speed counting, or complex closed‑loop control (e.g., turbine speed control, compressor surge protection). The CPU supports an enormous I/O capacity: up to 131,072 digital inputs and 131,072 digital outputs, plus 8,192 analog inputs and 8,192 analog outputs. Up to 21 expansion units and 6 interface modules can be connected.

        The 6ES7417-4HL01-0AB0 Siemens Central Unit may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

        Siemens 6ES7417-4HL01-0AB0 Central Unit Manuals, Datasheets,Drivers,Link Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not included with this equipment unless listed in the above stock item description.All prices are shown in USD.
        Siemens 6ES7417-4HL01-0AB0 Central Unit Specs

        General

        • Manufacturer Siemens
        • Model 6ES7417-4HL01-0AB0
        • Condition New Original ready stock
        • Product Family 6ES7417-4HL00-0AB0,6ES7417-4XT05-0AB0,6ES7414-4HL01-0AB0
        Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not included with this equipment unless listed in the above stock item description.All prices are shown in USD.
        • Critical Infrastructure: Such as power plant control systems, power distribution networks, and oil and gas production and refining.
        • Process Industries: Industries requiring long-term continuous and stable operation, such as chemical plants, pharmaceutical plants, and water treatment plants.
        • Safety-Related Applications: Can be configured as an F/FH system to process safety commands for emergency shutdown (ESD) or fire detection systems.
        • Operating Temperature: Standard operating range is 0°C to 60°C.
        • Humidity Requirements: 5% to 95%, non-condensing.
        • Storage Temperature: Safely stored in environments ranging from -40°C to 70°C.
        • Multi-interface communication: Integrates 4 interfaces, including 1 MPI/DP interface, 1 DP interface (supporting PROFIBUS), and 2 dedicated synchronization module interfaces.
        • Fault-tolerant monitoring: Supports redundant architecture. When one CPU fails, another CPU seamlessly takes over control, ensuring uninterrupted monitoring.
        • Advanced diagnostics: Built-in advanced error detection functions can identify CPU, communication, or I/O faults and identify them using three- or four-digit error codes.
        Description
        The 6ES7417-4HL01-0AB0 is a CPU 417H central unit designed for SIMATIC S7-400H redundant automation systems. It features 4 MB of integrated work memory (2 MB for code, 2 MB for data), expandable to 20 MB (10 MB code, 10 MB data). The CPU has four interfaces: 1 MPI/DP, 1 DP, and 2 ports for synchronization modules.

        When using the 6ES7417-4HL01-0AB0, engineers can build high‑availability S7‑400H systems with redundant CPUs. The CPU supports up to 21 expansion units, 6 interface modules, and 2 integrated DP masters. It has 8,192 DBs, 6,144 FBs/FCs, and 512 S7 counters/timers. The I/O address area is 16 bytes (adjustable up to 1,024 bytes via process image). 

        The 6ES7417-4HL01-0AB0 has a power loss of 10 W typical. Current consumption from the 5V backplane bus is 1.8 A typ (2 A max). The CPU requires a backup battery (75 µA typ, 860 µA max) to retain memory. External backup voltage (5-15V DC) can be fed to the CPU. 

        For legacy S7‑400H system expansions or repairs, the 6ES7417-4HL01-0AB0 provides high‑performance redundant CPU capability. It supports STEP 7 V5.0 SP2 or higher for configuration. Programming languages include LAD, FBD, STL, SCL, CFC, GRAPH, and HiGraph®. The CPU has know‑how protection (password protection).
        Alternative Names
        6ES7417-4HLO1-OABO 6ES7417-4HL00-0AB0 6ES7417-4XT05-0AB0 6ES7414-4HL01-0AB0
        Technical notes
        The 6ES7417-4HL01-0AB0 is specifically designed for S7-400H redundant systems. Two identical CPUs run in synchrony; synchronization modules (order separately) connect via fiber optic cables to maintain data consistency. The CPU occupies 2 slots in the rack.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Is 6ES7417-4HL01-0AB0 designed for redundant systems?
        Yes. The 6ES7417-4HL01-0AB0 is a CPU for S7-400H – the high‑availability version of S7-400. It works in pairs with synchronization modules. If the primary CPU fails, the backup takes over seamlessly (bumpless switchover), ensuring continuous process operation.
        Can I expand the memory of 6ES7417-4HL01-0AB0?
        Yes. Work memory is expandable to 20 MB (10 MB code, 10 MB data). Load memory is expandable via FEPROM or RAM memory cards up to 64 MB. The CPU also has 4 MB integrated (2 MB code, 2 MB data).
        How fast is 6ES7417-4HL01-0AB0?
        The CPU executes bit, word, and fixed‑point operations in 0.1 µs (100 ns), and floating‑point operations in 0.6 µs. This makes it suitable for high‑speed interlocking, closed‑loop control, and complex mathematical calculations in demanding applications.
        Does 6ES7417-4HL01-0AB0 retain memory after power loss?
        Yes. The CPU uses a backup battery (75 µA typ) to retain all data. It also has an external backup voltage input (5‑15V DC). Without battery, data is lost. Replace the battery during runtime to avoid data loss.

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