6ES7414-4HM14-0AB0 Siemens S7-400H CPU 414H

6ES7414-4HM14-0AB0 Siemens S7-400H CPU 414H | New & Original Stock

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Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414H The Siemens 6ES7414-4HM14-0AB0, also cataloged as the CPU 414H SIMATIC S7-400H Central Processing Unit,...

SKU: 6ES7414-4HM14-0AB0

Manufacturer: Siemens
Product No.: 6ES7414-4HM14-0AB0
Product Type: CPU Processors
Product Origin: Germany
Payment:T/T, Western Union
Weight: 995g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Siemens 6ES7414-4HM14-0AB0 SIMATIC S7-400H CPU 414H

The Siemens 6ES7414-4HM14-0AB0, also cataloged as the CPU 414H SIMATIC S7-400H Central Processing Unit, operates as a dedicated hardware component for discrete data routing and subsystem electrical distribution within S7-400H and S7-400F/FH redundant and fault-tolerant automation architectures. The module executes synchronous cyclical control logic over distributed I/O frames, processing bit instructions at 0.045 microseconds and floating-point logic at 0.135 microseconds. Dual embedded synchronization interfaces establish dedicated hardware-level tracking hooks to maintain continuous data alignment between twin sub-units across the system backplane.

Hardware Specifications

Parameter	Specification
Model	6ES7414-4HM14-0AB0
Brand	Siemens
Origin	Germany
Weight	0.995 kg
Dimensions	50 x 290 x 219 mm
Operating Temp	0 to 60 deg C
Power Consumption	6 W typical power loss
Work Memory	2.8 MB (1.4 MB program, 1.4 MB data)
Load Memory Expansion	FEPROM slot support up to 64 MB
Current Draw (5 VDC)	Typ. 1.4 A, max. 1.7 A from backplane
Current Draw (24 VDC)	Max. 150 mA per DP interface
Physical Interfaces	1 x MPI/DP, 1 x DP, 2 x Synchronization Module interfaces
Expansion Unit Limit	Max. 21 expansion frames
Firmware Baseline	Version V4.5
Engineering Environment	STEP 7 V5.3 SP2 or higher with hardware update

Backplane Bus Communication and Network Velocity Profiles

The processing module integrates internal backplane bus communication velocity licenses optimized to handle large payload data structures across deterministic networks. The device provisions an independent 1 x MPI/DP and 1 x dedicated DP interface to govern PROFIBUS DP and MPI node communications, shifting data at standard fieldbus rates. Real-time Configuration in RUN (CiR) functionality manages backplane bus allocation loops during active operation, adding an incremental baseline processing penalty of 100 ms with an additional 25 microseconds per I/O byte to update parameters without interrupting system execution loops.

Frequently Asked Questions

Q: What specific hardware constraints govern the synchronization interfaces during a failover sequence?

A: The two specialized synchronization ports require fiber-optic links to form a direct peer-to-peer connection between dual CPU 414H nodes. The internal hardware logic matches memory tables continuously; upon a primary unit fault, the standby unit takes over the backplane bus within a zero-bounce window without altering current internal register states.

Q: How is retentive data maintained on the CPU 414H when the main rack power supply is disconnected?

A: Retention relies on the rack-level backplane battery system. The CPU draws a typical backup current of 190 microamps (max. 660 microamps) from the battery to preserve data blocks, timers, and flags, while external backup voltages between 5 VDC and 15 VDC can be supplied to prevent work memory corruption.

Q: Can this hardware revision be inserted into an active, running S7-400H backplane rack assembly?

A: While the communication interfaces and secondary expansion modules support online hot-swap operations, inserting a primary central processing unit into an unpowered chassis slot requires the sub-rack to be isolated. The partner CPU will continue executing process logic while the new node initializes and completes memory image synchronization.

Field Installation Guidelines

Insert the processor vertically into the designated chassis slots, ensuring the rear backplane connectors align perfectly before engaging the mechanical locking screws.
Configure the MPI/DP and DP physical address mappings inside the STEP 7 hardware utility before downloading system parameters to avoid network collisions.
Install high-grade fiber-optic synchronization modules into the dedicated dual slots, verifying that the minimum bend radius of the fiber patch cables is maintained.
Ground the unshielded segments of all incoming PROFIBUS and MPI communication cables directly to the enclosure shielding bus using standard grounding clamps.
Verify the functional status of the backup batteries on the power supply module before putting the CPU into RUN mode to ensure retentive variables are preserved during power failures.

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