6ES7414-4HM14-0AB0
Siemens CPU 414-4H for S7-400H/F/FH, 2.8 MB, MPI/DP, DP and 2 sync interfaces
Image is for illustrative purposes only. Please refer to product description.
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Siemens SIMATIC S7-400H CPU 414-4H: central processing unit for S7-400H and S7-400F/FH systems, 2.8 MB memory (1.4 MB program, 1.4 MB data), MPI/DP and PROFIBUS DP interfaces and two interfaces for synchronisation modules.
- Manufacturer
- Siemens
- Manufacturer part no.
- 6ES7414-4HM14-0AB0
- Product family
- SIMATIC S7-400 PLC CPUs
- Type
- Redundant PLC CPU (H-CPU)
- Lifecycle
- Discontinued
- OEM successor
- Not stated
- Technical datasheet
- Data sheet
Technical specifications
- Manufacturer
- Siemens
- Manufacturer part no.
- 6ES7414-4HM14-0AB0
- Type
- Redundant PLC CPU (H-CPU)
- Application
- PLC controller
- Used with
- SIMATIC S7-400 rack (system power supply)
- Product type designation
- CPU 414-4H
- HW functional status
- 1
- Firmware version
- V4.5
- Engineering with / Programming package
- STEP 7 V5.3 SP2 or higher with HW update
- CiR synchronization time, basic load
- 100 ms
- CiR synchronization time, time per I/O byte
- 25 µs
- Supply voltage / Rated value (DC)
- Power supply via system power supply
- Input current / from backplane bus 5 V DC, typ.
- 1.4 A
- Input current / from backplane bus 5 V DC, max.
- 1.7 A
- Input current / from backplane bus 24 V DC, max.
- 150 mA; Per DP interface
- Input current / from interface 5 V DC, max.
- 90 mA; At each DP interface
- Power loss, typ.
- 6 W
- Storage / Type of memory
- RAM
- Work memory / integrated
- 2.8 Mbyte
- Work memory / integrated (for program)
- 1.4 Mbyte
- Work memory / integrated (for data)
- 1.4 Mbyte
- Work memory / expandable
- No
- Load memory / expandable FEPROM
- Yes
- Load memory / expandable FEPROM, max.
- 64 Mbyte
- Load memory / integrated RAM, max.
- 256 kbyte
- Load memory / expandable RAM
- Yes
- Load memory / expandable RAM, max.
- 64 Mbyte
- Backup / present
- Yes
- Backup / with battery
- Yes; all data
- Backup / without battery
- No
Show all 242 specificationsShow fewer
- Backup battery / Backup current, typ.
- 190 µA; Valid up to 40°C
- Backup battery / Backup current, max.
- 660 µA
- Backup battery / Backup time, max.
- Dealt with in the module data manual with the secondary conditions and the factors of influence
- Backup battery / Feeding of external backup voltage to CPU
- 5 V DC to 15 V DC
- CPU processing times / for bit operations, typ.
- 0.045 µs
- CPU processing times / for word operations, typ.
- 0.045 µs
- CPU processing times / for fixed point arithmetic, typ.
- 0.045 µs
- CPU processing times / for floating point arithmetic, typ.
- 0.135 µs
- DB / Number, max.
- 4 095; Number range: 1 to 4095
- DB / Size, max.
- 64 kbyte
- FB / Number, max.
- 2 048; Number range: 0 to 2047
- FB / Size, max.
- 64 kbyte
- FC / Number, max.
- 2 048; Number range: 0 to 2047
- FC / Size, max.
- 64 kbyte
- OB / Size, max.
- 64 kbyte
- OB / Number of time alarm OBs
- 4
- OB / Number of delay alarm OBs
- 4
- OB / Number of cyclic interrupt OBs
- 4
- OB / Number of process alarm OBs
- 4
- Nesting depth / per priority class
- 24
- Nesting depth / additional within an error OB
- 1
- S7 counter / Number
- 2 048
- S7 counter / Retentivity / adjustable
- Yes
- S7 counter / Retentivity / preset
- Z 0 to Z 7
- S7 counter / Counting range / lower limit
- 0
- S7 counter / Counting range / upper limit
- 999
- IEC counter / present
- Yes
- IEC counter / Type
- SFB
- S7 timer / Number
- 2 048
- S7 timer / Retentivity / adjustable
- Yes
- S7 timer / Retentivity / preset
- No times retentive
- S7 timer / Time range / lower limit
- 10 ms
- S7 timer / Time range / upper limit
- 9 990 s
- IEC timer / present
- Yes
- IEC timer / Type
- SFB
- Retentive data area (incl. timers, counters, flags), max.
- Total working and load memory (with backup battery)
- Flag / Size, max.
- 8 kbyte
- Flag / Retentivity available
- Yes
- Flag / Retentivity preset
- MB 0 to MB 15
- Flag / Number of clock memories
- 8; in 1 memory byte
- Local data / adjustable, max.
- 16 kbyte
- Local data / preset
- 8 kbyte
- I/O address area / Inputs
- 8 kbyte
- I/O address area / Outputs
- 8 kbyte
- Process image / Inputs, adjustable
- 8 kbyte
- Process image / Outputs, adjustable
- 8 kbyte
- Process image / Inputs, default
- 256 byte
- Process image / Outputs, default
- 256 byte
- Process image / consistent data, max.
- 244 byte
- Process image / Access to consistent data in process image
- Yes
- Subprocess images / Number of subprocess images, max.
- 15
- Digital channels / Inputs
- 65 536
- Digital channels / Inputs / of which central
- 65 536
- Digital channels / Outputs
- 65 536
- Digital channels / Outputs / of which central
- 65 536
- Analog channels / Inputs
- 4 096
- Analog channels / Inputs / of which central
- 4 096
- Analog channels / Outputs
- 4 096
- Analog channels / Outputs / of which central
- 4 096
- Hardware configuration / Number of expansion units, max.
- 21
- Hardware configuration / connectable OPs
- 31 without message processing, 8 with message processing
- Hardware configuration / Multicomputing
- No
- Interface modules / Number of connectable IMs (total), max.
- 6
- Interface modules / Number of connectable IM 460s, max.
- 6
- Interface modules / Number of connectable IM 463s, max.
- 4; Single mode only
- Number of DP masters / integrated
- 2
- Number of DP masters / via CP
- 10
- Number of DP masters / Mixed mode IM + CP permitted
- No
- Number of operable FMs and CPs (recommended) / FM
- See manual Automation System S7-400H fault-tolerant systems. Limited by number of slots and number of connections
- Number of operable FMs and CPs (recommended) / CP, PtP
- See manual Automation System S7-400H fault-tolerant systems. Limited by number of slots and number of connections
- Number of operable FMs and CPs (recommended) / PROFIBUS and Ethernet CPs
- 14; Of which max. 10 CP as DP master
- Slots / required slots
- 2
- Clock / Hardware clock (real-time)
- Yes
- Clock / retentive and synchronizable
- Yes
- Clock / Resolution
- 1 ms
- Clock / Deviation per day (buffered), max.
- 1.7 s; Power off
- Clock / Deviation per day (unbuffered), max.
- 8.6 s; Power on
- Operating hours counter / Number
- 8
- Operating hours counter / Number/Number range
- 0 to 7
- Operating hours counter / Range of values
- 0 to 32767 hours
- Operating hours counter / Granularity
- 1 h
- Operating hours counter / retentive
- Yes
- Clock synchronization / supported
- Yes
- Clock synchronization / to MPI, master
- Yes
- Clock synchronization / on MPI, device
- Yes
- Clock synchronization / to DP, master
- Yes
- Clock synchronization / on DP, device
- Yes
- Clock synchronization / in AS, master
- Yes
- Clock synchronization / in AS, device
- Yes
- Time difference in system when synchronizing via / MPI, max.
- 200 ms
- Number of RS 485 interfaces
- 2
- Number of other interfaces
- 0
- Interfaces / Optical interface
- No
- 1. Interface / Interface type
- MPI/PROFIBUS DP
- 1. Interface / Isolated
- Yes
- Interface types / RS 485
- Yes
- Interface types / Output current of the interface, max.
- 150 mA
- Protocols / MPI
- Yes
- Protocols / PROFIBUS DP master
- Yes
- Protocols / PROFIBUS DP device
- No
- MPI / Number of connections
- 32
- MPI / Transmission rate, max.
- 12 Mbit/s
- MPI / Services / PG/OP communication
- Yes
- MPI / Services / Routing
- Yes
- MPI / Services / Global data communication
- No
- MPI / Services / S7 basic communication
- No
- MPI / Services / S7 communication
- Yes
- PROFIBUS DP master / Number of connections, max.
- 16
- PROFIBUS DP master / Transmission rate, max.
- 12 Mbit/s
- 1. Interface / PROFIBUS DP master / max. number of DP devices
- 32
- PROFIBUS DP master / Services / PG/OP communication
- Yes
- PROFIBUS DP master / Services / Routing
- Yes
- PROFIBUS DP master / Services / Global data communication
- No
- PROFIBUS DP master / Services / S7 basic communication
- No
- PROFIBUS DP master / Services / S7 communication
- Yes
- PROFIBUS DP master / Services / Equidistance
- No
- PROFIBUS DP master / Services / SYNC/FREEZE
- No
- PROFIBUS DP master / Services / activation/deactivation of DP devices
- No
- PROFIBUS DP master / Services / Direct data exchange (slave-to-slave communication)
- No
- 1. Interface / PROFIBUS DP master / Address area / Inputs, max.
- 2 kbyte
- 1. Interface / PROFIBUS DP master / Address area / Outputs, max.
- 2 kbyte
- PROFIBUS DP master / User data per DP device / user data per DP device, max.
- 244 byte
- PROFIBUS DP master / User data per DP device / Inputs, max.
- 244 byte
- PROFIBUS DP master / User data per DP device / Outputs, max.
- 244 byte
- PROFIBUS DP master / User data per DP device / Slots, max.
- 244
- PROFIBUS DP master / User data per DP device / per slot, max.
- 128 byte
- 2. Interface / Interface type
- PROFIBUS DP
- 2. Interface / Isolated
- Yes
- 2. Interface / PROFIBUS DP master / max. number of DP devices
- 96
- 2. Interface / PROFIBUS DP master / Address area / Inputs, max.
- 6 kbyte
- 2. Interface / PROFIBUS DP master / Address area / Outputs, max.
- 6 kbyte
- 3. Interface / Interface type
- Pluggable synchronization submodule (FO)
- 3. Interface / Plug-in interface modules
- Synchronization submodule IF 960 6ES7960-1AA04-0XA0 or 6ES7960-1AB04- 0XA0
- 4. Interface / Interface type
- Pluggable synchronization submodule (FO)
- 4. Interface / Plug-in interface modules
- Synchronization submodule IF 960 6ES7960-1AA04-0XA0 or 6ES7960-1AB04- 0XA0
- SIMATIC communication / S7 routing
- Yes
- PG/OP communication
- Yes
- PG/OP communication / Number of connectable OPs with message processing
- 8
- PG/OP communication / Number of connectable OPs without message processing
- 31
- Global data communication / supported
- No
- S7 basic communication / supported
- No
- S7 communication / supported
- Yes
- S7 communication / as server
- Yes
- S7 communication / as client
- Yes
- S7 communication / User data per job, max.
- 64 kbyte
- S7 communication / User data per job (of which consistent), max.
- 462 byte; 1 variable
- S5 compatible communication / supported
- Yes; (via CP max. 10 and FC AG_SEND and FC AG_RECV)
- S5 compatible communication / User data per job, max.
- 8 kbyte
- S5 compatible communication / User data per job (of which consistent), max.
- 240 byte
- S5 compatible communication / Number of simultaneous AG-SEND/AG-RECV orders per CPU, max.
- 24/24
- Standard communication (FMS) / supported
- Yes; Via CP and loadable FB
- Number of connections / overall
- 32
- Number of connections / usable for PG communication / reserved for PG communication
- 1
- Number of connections / usable for PG communication / adjustable for PG communication, max.
- 0
- Number of connections / usable for OP communication / reserved for OP communication
- 1
- Number of connections / usable for OP communication / adjustable for OP communication, max.
- 0
- Number of connections / usable for S7 basic communication / reserved for S7 basic communication
- 0
- Number of connections / usable for S7 basic communication / adjustable for S7 basic communication, max.
- 0
- Number of connections / usable for S7 communication / reserved for S7 communication
- 0
- Number of connections / usable for S7 communication / adjustable for S7 communication, max.
- 0
- Number of connections / usable for routing / reserved for routing
- 0
- Number of connections / usable for routing / adjustable for routing, max.
- 0
- S7 message functions / Number of login stations for message functions, max.
- 8
- S7 message functions / Symbol-related messages
- No
- S7 message functions / Program alarms
- Yes
- S7 message functions / simultaneously active Alarm_S blocks, max.
- 100
- S7 message functions / Alarm 8-blocks
- Yes
- Alarm 8-blocks / Number of instances for alarm 8 and S7 communication blocks, max.
- 1 200
- Alarm 8-blocks / preset, max.
- 900
- S7 message functions / Process control messages
- Yes
- S7 message functions / Number of archives that can log on simultaneously (SFB 37 AR_SEND)
- 16
- Test commissioning functions / Status block
- Yes
- Test commissioning functions / Single step
- Yes
- Test commissioning functions / Number of breakpoints
- 4
- Status/control / Status/control variable
- Yes
- Status/control / Variables
- Inputs/outputs, memory bits, DBs, distributed I/Os, timers, counters
- Status/control / Number of variables, max.
- 70
- Forcing / Forcing
- Yes
- Forcing / Forcing, variables
- Inputs/outputs, bit memories, distributed I/Os
- Forcing / Number of variables, max.
- 256
- Diagnostic buffer / present
- Yes
- Diagnostic buffer / Number of entries, max.
- 3 200
- Diagnostic buffer / Number of entries, max. / can be set
- Yes
- Diagnostic buffer / Number of entries, max. / preset
- 120
- Configuration software / STEP 7
- Yes
- Programming / Command set
- see instruction list
- Programming / Nesting levels
- 8
- Programming / Access to consistent data in process image
- Yes
- Programming / System functions (SFC)
- see instruction list
- Programming / System function blocks (SFB)
- see instruction list
- Programming / Programming language / LAD
- Yes
- Programming / Programming language / FBD
- Yes
- Programming / Programming language / STL
- Yes
- Programming / Programming language / SCL
- Yes
- Programming / Programming language / CFC
- Yes
- Programming / Programming language / GRAPH
- Yes
- Programming / Programming language / HiGraph®
- Yes
- Programming / Number of simultaneously active SFCs / RD_REC
- 8
- Programming / Number of simultaneously active SFCs / WR_REC
- 8
- Programming / Number of simultaneously active SFCs / WR_PARM
- 8
- Programming / Number of simultaneously active SFCs / PARM_MOD
- 1
- Programming / Number of simultaneously active SFCs / WR_DPARM
- 2
- Programming / Number of simultaneously active SFCs / DPNRM_DG
- 8
- Programming / Number of simultaneously active SFCs / RDSYSST
- 8
- Programming / Number of simultaneously active SFCs / DP_TOPOL
- 1
- Programming / Number of simultaneously active SFBs / RDREC
- 8
- Programming / Number of simultaneously active SFBs / WRREC
- 8
- Know-how protection / User program protection/password protection
- Yes
- Width
- 50 mm
- Height
- 290 mm
- Depth
- 219 mm
- Weight, approx.
- 995 g
Technical documents (1)
Key features
- For redundant S7-400H and fail-safe S7-400F/FH systems
- 2.8 MB work memory: 1.4 MB program, 1.4 MB data
- 1st interface MPI/PROFIBUS DP, 2nd interface PROFIBUS DP
- Two plug-in synchronisation submodules (fibre-optic) link it to its partner CPU
- Powered from the S7-400 system power supply
About the Siemens 6ES7414-4HM14-0AB0
The Siemens 6ES7414-4HM14-0AB0 is the CPU 414-4H, a CPU for the S7-400H redundant system and for S7-400F/FH fail-safe systems. Siemens's data sheet gives it 2.8 MB of memory, 1.4 MB for the program and 1.4 MB for data, an MPI/PROFIBUS DP interface, a PROFIBUS DP interface and two interfaces for fibre-optic synchronisation submodules. It is powered from the S7-400 rack's system power supply.
What is the 6ES7414-4HM14-0AB0 used for?
In an S7-400H system two H-CPUs run the same program and are linked through their synchronisation modules, so the plant keeps running if one fails. It is used in process plants that cannot stop, where a failed CPU must be replaced to restore redundancy.
Lifecycle and successor
Discontinued.
Before you order
What to photograph or confirm so the right unit is quoted.
Check the full order number and the firmware version on the CPU's front label; send a photo of it. S7-400 CPUs of the same type differ by order number in memory and interfaces, so quote against the exact number, and list any interface modules (IF) fitted. For an H system, also note the synchronisation submodules and the firmware of the partner CPU.
Alternatives for 6ES7414-4HM14-0AB0
The manufacturer’s named successor and other parts in the same family. None is a drop-in replacement without checking wiring, I/O and configuration for your installation.
| Product | Manufacturer | Type | Lifecycle | Relationship | Qty Available | Price | Action |
|---|---|---|---|---|---|---|---|
| Siemens 6ES7412-2EK06-0AB0CPU 412-2 PN, 1 MB, MPI/DP and PROFINET | Siemens | PLC CPU | Discontinued | Same family | On Request | On request | View › |
| Siemens 6ES7412-3HJ14-0AB0CPU 412-3H for S7-400H/F/FH, 768 KB, MPI/DP and 2 sync interfaces | Siemens | Redundant PLC CPU (H-CPU) | Discontinued | Same family | On Request | On request | View › |
| Siemens 6ES7414-2XK05-0AB0CPU 414-2, 1 MB, MPI/DP and PROFIBUS DP | Siemens | PLC CPU | Discontinued | Same family | On Request | On request | View › |
| Siemens 6ES7414-3XM07-0AB0CPU 414-3, 4 MB, MPI/DP, PROFIBUS DP and IF slot | Siemens | PLC CPU | Active | Same family | On Request | On request | View › |
| Siemens 6ES7416-2XP07-0AB0CPU 416-2, 8 MB, MPI/DP and PROFIBUS DP | Siemens | PLC CPU | Active | Same family | On Request | On request | View › |
| Siemens 6ES7416-3XS07-0AB0CPU 416-3, 16 MB, MPI/DP, PROFIBUS DP and IF slot | Siemens | PLC CPU | Active | Same family | On Request | On request | View › |
| Siemens 6ES7417-4XT05-0AB0CPU 417-4, 30 MB, MPI, PROFIBUS DP and 2 IF slots | Siemens | PLC CPU | Discontinued | Same family | On Request | On request | View › |
| Siemens 6ES7416-3FS07-0AB0CPU 416F-3 PN/DP fail-safe, 16 MB, MPI/DP, PROFINET and IF slot | Siemens | Safety PLC CPU (F-CPU) | Active | Same family | On Request | On request | View › |
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